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Bump the dotnet group with 10 updates#2257
dependabot[bot] wants to merge 1 commit intomainfrom
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@dependabot dependabot bot commented on behalf of github Apr 15, 2026

Updated Azure.Identity from 1.17.1 to 1.21.0.

Release notes

Sourced from Azure.Identity's releases.

1.21.0

1.21.0 (2026-04-10)

Other Changes

  • All Azure.Identity types have been moved to Azure.Core and are now available through TypeForwardedTo attributes. This is a non-breaking change — existing code continues to work transparently. The library's version number now aligns with that of Azure.Core. See the Migration Guide for details.

1.20.0

1.20.0 (2026-03-30)

Features Added

  • Added a JSON schema segment to the NuGet package that provides IntelliSense and validation for Azure.Identity credential configuration in appsettings.json.

Breaking Changes

  • AddAzureClient, AddKeyedAzureClient, and WithAzureCredential return type changed from IHostApplicationBuilder to IClientBuilder to align with the IClientBuilder composition change in System.ClientModel.

1.19.0

1.19.0 (2026-03-11)

Features Added

  • Added support in ClientCertificateCredential to specify a path in the form of cert:/StoreLocation/StoreName/Thumbprint to refer to a certificate in the platform certificate store - such as the Windows Certificate Store on Windows, and the KeyChain on MacOS - instead of a file on disk. For example to load a certificate from the "My" store in the "CurrentUser" location use the path cert:/CurrentUser/My/E661583E8FABEF4C0BEF694CBC41C28FB81CD870 (A community contribution, courtesy of fowl2).

Other Changes

  • Updated Microsoft.Identity.Client and Microsoft.Identity.Client.Extensions.Msal dependencies to version 4.83.1.

Commits viewable in compare view.

Updated Microsoft.Extensions.AI.Abstractions from 10.2.0 to 10.5.0.

Release notes

Sourced from Microsoft.Extensions.AI.Abstractions's releases.

10.5.0

HTTP Logging Middleware APIs in Microsoft.AspNetCore.Diagnostics.Middleware are now stable. This release also transfers Microsoft.Extensions.VectorData.Abstractions and Microsoft.Extensions.VectorData.ConformanceTests from the Semantic Kernel repository into dotnet/extensions, jumping from 10.1.0 to 10.5.0 for consistent versioning. The release also delivers fixes across the AI libraries, AI Evaluation, and Service Discovery.

Breaking Changes

  1. Rename VectorStoreVectorAttribute constructor parameter #​7460
    • The Dimensions parameter was renamed to dimensions (lowercase). This is a source-breaking change only — binary compatibility is preserved.
    • If you use the named argument syntax new VectorStoreVectorAttribute(Dimensions: 1536), update it to new VectorStoreVectorAttribute(dimensions: 1536).

Experimental API Changes

Now Stable

  • HTTP Logging Middleware APIs are now stable (previously EXTEXP0013): AddHttpLogEnricher<T>, IHttpLogEnricher, and RequestHeadersLogEnricherOptions.HeadersDataClasses #​7380

What's Changed

AI

  • Fix OpenAIResponsesChatClient to respect "store":false in responses #​7417 by @​stephentoub
  • Fix InvalidOperationException in CoalesceWebSearchToolCallContent #​7419 by @​stephentoub
  • Handle F# optional parameters in AIFunctionFactory schema generation #​7439 by @​eiriktsarpalis
  • Fix ComputerCallResponseItem using Item.Id instead of CallId #​7446 by @​jozkee
  • Fix HostedFileContent with image MIME type sent as input_file instead of input_image #​7438 by @​stephentoub (co-authored by @​copilot)
  • Guard Activity.Current restore with null check in OpenTelemetry streaming clients #​7443 by @​stephentoub (co-authored by @​copilot)
  • Enable stateless mode in remote MCP server template (released as v1.2.0 on 2026-04-01) #​7441 by @​jeffhandley

Vector Data

  • Move Microsoft.Extensions.VectorData.Abstractions over from Semantic Kernel #​7434 by @​roji
  • Rename VectorStoreVectorAttribute dimensions constructor parameter #​7460 by @​roji

AI Evaluation

  • Add Path Validation for DiskBasedResponseCache and DiskBasedResultStore #​7397 by @​peterwald
  • Update brace-expansion for CVE-2026-33750 #​7457 by @​SamMonoRT

ASP.NET Core Extensions

  • Removing experimental attribute from Http logging middleware #​7380 by @​mariamgerges

Service Discovery

  • Implement RFC6761 reserved DNS names handling #​6924 by @​rzikm

Documentation Updates

  • Remove per-library CHANGELOG.md files #​7413 by @​jeffhandley

Test Improvements

... (truncated)

10.4.1

This release of the Microsoft.Extensions.AI packages adds new experimental APIs for Realtime client sessions and Text-to-Speech, along with OpenTelemetry and middleware improvements.

Packages in this release

Package Version
Microsoft.Extensions.AI.Abstractions 10.4.1
Microsoft.Extensions.AI 10.4.1
Microsoft.Extensions.AI.OpenAI 10.4.1

Experimental API Changes

New Experimental APIs

  • New experimental API: Realtime Client Sessions #​7285 and #​7399
  • New experimental API: Text-to-Speech Client #​7381

Changes to Experimental APIs

  • Hosted File Download Stream: write-path methods now explicitly throw NotSupportedException #​7394

What's Changed

AI

  • Add ITextToSpeechClient abstraction, middleware, and OpenAI implementation #​7381 by @​stephentoub
  • Realtime Client Proposal #​7285 by @​tarekgh
  • Add VoiceActivityDetection options to realtime session abstractions #​7399 by @​tarekgh
  • Make UriContent mediaType parameter optional with inference from URI file extension #​7398 by @​stephentoub (co-authored by @​Copilot)
  • Emit gen_ai.client.operation.exception via ILogger LoggerMessage on OpenTelemetry instrumentation classes #​7379 by @​stephentoub (co-authored by @​Copilot)
  • Support invoke_workflow as an equivalent parent span to invoke_agent in FunctionInvokingChatClient #​7382 by @​stephentoub (co-authored by @​Copilot)
  • Make HostedFileDownloadStream explicitly read-only #​7394 by @​stephentoub (co-authored by @​Copilot)

Documentation Updates

  • Document JSON schema derivation for return types in AIFunctionFactory #​7400 by @​stephentoub (co-authored by @​Copilot)

Test Improvements

  • Fix test warnings #​7369 by @​jozkee
  • Add tests for JSON deserialization of serializable types #​7373 by @​stephentoub (co-authored by @​Copilot)

Repository Infrastructure Updates

  • Update Package Validation Baseline to 10.4.0 #​7389 by @​jeffhandley (co-authored by @​Copilot)
  • Update ModelContextProtocol libraries to version 1.0.0 #​7340 by @​stephentoub (co-authored by @​Copilot)

Acknowledgements

  • @​eiriktsarpalis @​ericstj @​CodeBlanch @​lmolkova @​adamsitnik @​joperezr reviewed pull requests
    ... (truncated)

10.4.0

This release advances the AI abstractions with new hosted file, web search, and reasoning content types, stabilizes MCP and tool approval APIs, adds streaming latency metrics to OpenTelemetry instrumentation, and delivers bug fixes across caching, data ingestion, and resource monitoring.

Experimental API Changes

Now Stable

  • MCP Server Tool Content and Function Call Approval APIs are now stable (previously MEAI001) #​7299
  • FakeLogCollector.GetLogsAsync(CancellationToken) is now stable (previously EXTEXP0003) #​7332

New Experimental APIs

  • New experimental AddExtendedHttpClientLogging overloads with wrapHandlersPipeline parameter (EXTEXP0013) #​7231

Removed Experimental APIs

  • AI Tool Reduction experimental APIs removed (was experimental under MEAI001) #​7353

What's Changed

AI

  • Add IHostedFileClient and friends #​7269 by @​stephentoub
  • Add web search tool call content #​7276 by @​stephentoub (co-authored by @​Copilot)
  • Surface OpenAI-compatible reasoning_content as TextReasoningContent #​7295 by @​stephentoub
  • MCP/Approvals/Tool Contents stabilization #​7299 by @​jozkee
  • Implement time_to_first_chunk and time_per_output_chunk streaming metrics in OpenTelemetryChatClient #​7325 by @​stephentoub (co-authored by @​Copilot)
  • Add openai.api.type telemetry attribute to OpenAI IChatClient implementations #​7316 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenTelemetry Gen AI semantic conventions to v1.40 #​7322 by @​stephentoub (co-authored by @​Copilot)
  • Fix tool definitions emission regardless of sensitivity setting #​7346 by @​stephentoub (co-authored by @​Copilot)
  • Honor [Required] attribute in AI function parameter JSON schema generation #​7272 by @​stephentoub (co-authored by @​Copilot)
  • AddAIContentType automatically registers content type against every base in the inheritance chain up to AIContent #​7358 by @​jozkee (co-authored by @​Copilot)
  • Auto-mark server-handled FunctionCallContent as InformationalOnly #​7314 by @​stephentoub (co-authored by @​Copilot)
  • Map ReasoningEffort.None and ExtraHigh to none and xhigh in OpenAI IChatClient implementations #​7319 by @​stephentoub (co-authored by @​Copilot)
  • Handle DynamicMethod reflection limitations in AIFunctionFactory #​7287 by @​stephentoub (co-authored by @​Copilot)
  • Fix Activity.Current nulled during streaming tool invocation #​7321 by @​flaviocdc (co-authored by @​Copilot)
  • Handle FunctionCallOutputResponseItem in streaming response conversion #​7307 by @​stephentoub (co-authored by @​Copilot)
  • Fix serialization of response continuation tokens #​7356 by @​stephentoub
  • Remove AI Tool Reduction experimental APIs #​7353 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenAI to 2.9.1 #​7349 by @​stephentoub

Telemetry and Observability

  • Introduce support for the Gauge metric type #​7203 by @​rainsxng
  • Update logging source generator to support generic methods #​7331 by @​svick (co-authored by @​Copilot)
  • Update logging source generator to match runtime PR #​124589 (ref readonly/params/scoped) #​7333 by @​svick (co-authored by @​Copilot)
  • Promote FakeLogCollector.GetLogsAsync(CancellationToken) from experimental to stable #​7332 by @​Demo30
  • Remove obsolete CS1591 warning suppression from generated file preamble #​7308 by @​luissena

HTTP Resilience and Diagnostics

... (truncated)

10.3.0

Experimental API Changes

Now Stable

  • IChatReducer interface — graduated from experimental to stable. The interface is now stable; concrete implementations (MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient) remain experimental. #​7235 by @​jeffhandley
  • FunctionCallContent and FunctionResultContent unsealed — changed from sealed class to class, enabling derivation. #​7229 by @​stephentoub (co-authored by @​Copilot)

Breaking Changes to Experimental APIs

  • Experimental diagnostic ID reorganization — the blanket MEAI001 diagnostic ID was split into feature-specific constants. OpenAI-specific experimental APIs now use OPENAI001, OPENAI002, or SCME0001 instead of MEAI001. Consumers who suppressed MEAI001 for OpenAI APIs may need to suppress OPENAI001/OPENAI002 instead. #​7116 by @​jeffhandley (co-authored by @​Copilot), #​7235 by @​jeffhandley

New Experimental APIs

  • Chat reduction implementations — MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient, and UseChatReducer builder extension. #​7235 by @​jeffhandley
  • OpenAI Responses/Assistants/Realtime/Image/Audio integrations — assigned feature-specific experimental diagnostic IDs (OPENAI001, OPENAI002). #​7235 by @​jeffhandley
  • ImageGenerationToolCallContent and ImageGenerationToolResultContent — added to JSON serialization infrastructure. #​7275 by @​stephentoub (co-authored by @​Copilot)

What's Changed

AI

  • Add ReasoningOptions to ChatOptions #​7252 by @​stephentoub (co-authored by @​Copilot)
  • Add LoadFromAsync and SaveToAsync helper methods to DataContent #​7159 by @​stephentoub (co-authored by @​Copilot)
  • Add FunctionCallContent.InformationalOnly property #​7126, #​7262 by @​stephentoub (co-authored by @​Copilot)
  • Add server tool call support to OpenTelemetryChatClient per semantic conventions #​7240 by @​stephentoub (co-authored by @​Copilot)
  • Add ImageGenerationToolCallContent and ImageGenerationToolResultContent to JSON serialization infrastructure #​7275 by @​stephentoub (co-authored by @​Copilot)
  • Add logging to FunctionInvokingChatClient for approval flow, error handling, and loop control #​7228 by @​stephentoub (co-authored by @​Copilot)
  • Allow FunctionResultContent pass-through when CallId matches #​7229 by @​stephentoub (co-authored by @​Copilot)
  • Remove AIFunctionDeclaration tools on last iteration in FunctionInvokingChatClient #​7207 by @​stephentoub (co-authored by @​Copilot)
  • Propagate CachedInputTokenCount in OpenTelemetry telemetry #​7234 by @​stephentoub (co-authored by @​Copilot)
  • Categorize MEAI001 experimental APIs #​7116 by @​jeffhandley (co-authored by @​Copilot)
  • MEAI: Update Experimental / Preview Features #​7235 by @​jeffhandley
  • ToChatResponse: Merge AdditionalProperties into ChatMessage instead of ChatResponse #​7194 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient to respect ChatOptions.Tools modifications by function tools #​7218 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient invoke_agent span detection with exact match or space delimiter #​7224 by @​stephentoub (co-authored by @​Copilot)
  • Fix approval request/response correlation in FunctionInvokingChatClient #​7261 by @​stephentoub (co-authored by @​Copilot)
  • Fix DataUriParser to default to text/plain;charset=US-ASCII per RFC 2397 #​7247 by @​stephentoub (co-authored by @​Copilot)
  • Fix NRT resolution for AIFunction parameters #​7200 by @​eiriktsarpalis
  • Preserve extra JSON schema properties in ToolJson serialization #​7250 by @​stephentoub (co-authored by @​Copilot)
  • Fix token metric unit to use UCUM format {token} #​7241 by @​stephentoub
  • Fix OpenAI responses streaming to preserve encrypted reasoning content #​7266 by @​stephentoub
  • Update OpenAIResponsesChatClient to handle streaming code interpreter content #​7267 by @​stephentoub

Diagnostics, Health Checks, and Resource Monitoring

  • [5752] FakeLogCollector waiting capabilities #​6228 by @​Demo30
  • Bring new cpu.requests formula from Kubernetes #​7239 by @​amadeuszl

Service Discovery

... (truncated)

Commits viewable in compare view.

Updated Microsoft.Extensions.AI.Evaluation from 10.2.0 to 10.5.0.

Release notes

Sourced from Microsoft.Extensions.AI.Evaluation's releases.

10.5.0

HTTP Logging Middleware APIs in Microsoft.AspNetCore.Diagnostics.Middleware are now stable. This release also transfers Microsoft.Extensions.VectorData.Abstractions and Microsoft.Extensions.VectorData.ConformanceTests from the Semantic Kernel repository into dotnet/extensions, jumping from 10.1.0 to 10.5.0 for consistent versioning. The release also delivers fixes across the AI libraries, AI Evaluation, and Service Discovery.

Breaking Changes

  1. Rename VectorStoreVectorAttribute constructor parameter #​7460
    • The Dimensions parameter was renamed to dimensions (lowercase). This is a source-breaking change only — binary compatibility is preserved.
    • If you use the named argument syntax new VectorStoreVectorAttribute(Dimensions: 1536), update it to new VectorStoreVectorAttribute(dimensions: 1536).

Experimental API Changes

Now Stable

  • HTTP Logging Middleware APIs are now stable (previously EXTEXP0013): AddHttpLogEnricher<T>, IHttpLogEnricher, and RequestHeadersLogEnricherOptions.HeadersDataClasses #​7380

What's Changed

AI

  • Fix OpenAIResponsesChatClient to respect "store":false in responses #​7417 by @​stephentoub
  • Fix InvalidOperationException in CoalesceWebSearchToolCallContent #​7419 by @​stephentoub
  • Handle F# optional parameters in AIFunctionFactory schema generation #​7439 by @​eiriktsarpalis
  • Fix ComputerCallResponseItem using Item.Id instead of CallId #​7446 by @​jozkee
  • Fix HostedFileContent with image MIME type sent as input_file instead of input_image #​7438 by @​stephentoub (co-authored by @​copilot)
  • Guard Activity.Current restore with null check in OpenTelemetry streaming clients #​7443 by @​stephentoub (co-authored by @​copilot)
  • Enable stateless mode in remote MCP server template (released as v1.2.0 on 2026-04-01) #​7441 by @​jeffhandley

Vector Data

  • Move Microsoft.Extensions.VectorData.Abstractions over from Semantic Kernel #​7434 by @​roji
  • Rename VectorStoreVectorAttribute dimensions constructor parameter #​7460 by @​roji

AI Evaluation

  • Add Path Validation for DiskBasedResponseCache and DiskBasedResultStore #​7397 by @​peterwald
  • Update brace-expansion for CVE-2026-33750 #​7457 by @​SamMonoRT

ASP.NET Core Extensions

  • Removing experimental attribute from Http logging middleware #​7380 by @​mariamgerges

Service Discovery

  • Implement RFC6761 reserved DNS names handling #​6924 by @​rzikm

Documentation Updates

  • Remove per-library CHANGELOG.md files #​7413 by @​jeffhandley

Test Improvements

... (truncated)

10.4.1

This release of the Microsoft.Extensions.AI packages adds new experimental APIs for Realtime client sessions and Text-to-Speech, along with OpenTelemetry and middleware improvements.

Packages in this release

Package Version
Microsoft.Extensions.AI.Abstractions 10.4.1
Microsoft.Extensions.AI 10.4.1
Microsoft.Extensions.AI.OpenAI 10.4.1

Experimental API Changes

New Experimental APIs

  • New experimental API: Realtime Client Sessions #​7285 and #​7399
  • New experimental API: Text-to-Speech Client #​7381

Changes to Experimental APIs

  • Hosted File Download Stream: write-path methods now explicitly throw NotSupportedException #​7394

What's Changed

AI

  • Add ITextToSpeechClient abstraction, middleware, and OpenAI implementation #​7381 by @​stephentoub
  • Realtime Client Proposal #​7285 by @​tarekgh
  • Add VoiceActivityDetection options to realtime session abstractions #​7399 by @​tarekgh
  • Make UriContent mediaType parameter optional with inference from URI file extension #​7398 by @​stephentoub (co-authored by @​Copilot)
  • Emit gen_ai.client.operation.exception via ILogger LoggerMessage on OpenTelemetry instrumentation classes #​7379 by @​stephentoub (co-authored by @​Copilot)
  • Support invoke_workflow as an equivalent parent span to invoke_agent in FunctionInvokingChatClient #​7382 by @​stephentoub (co-authored by @​Copilot)
  • Make HostedFileDownloadStream explicitly read-only #​7394 by @​stephentoub (co-authored by @​Copilot)

Documentation Updates

  • Document JSON schema derivation for return types in AIFunctionFactory #​7400 by @​stephentoub (co-authored by @​Copilot)

Test Improvements

  • Fix test warnings #​7369 by @​jozkee
  • Add tests for JSON deserialization of serializable types #​7373 by @​stephentoub (co-authored by @​Copilot)

Repository Infrastructure Updates

  • Update Package Validation Baseline to 10.4.0 #​7389 by @​jeffhandley (co-authored by @​Copilot)
  • Update ModelContextProtocol libraries to version 1.0.0 #​7340 by @​stephentoub (co-authored by @​Copilot)

Acknowledgements

  • @​eiriktsarpalis @​ericstj @​CodeBlanch @​lmolkova @​adamsitnik @​joperezr reviewed pull requests
    ... (truncated)

10.4.0

This release advances the AI abstractions with new hosted file, web search, and reasoning content types, stabilizes MCP and tool approval APIs, adds streaming latency metrics to OpenTelemetry instrumentation, and delivers bug fixes across caching, data ingestion, and resource monitoring.

Experimental API Changes

Now Stable

  • MCP Server Tool Content and Function Call Approval APIs are now stable (previously MEAI001) #​7299
  • FakeLogCollector.GetLogsAsync(CancellationToken) is now stable (previously EXTEXP0003) #​7332

New Experimental APIs

  • New experimental AddExtendedHttpClientLogging overloads with wrapHandlersPipeline parameter (EXTEXP0013) #​7231

Removed Experimental APIs

  • AI Tool Reduction experimental APIs removed (was experimental under MEAI001) #​7353

What's Changed

AI

  • Add IHostedFileClient and friends #​7269 by @​stephentoub
  • Add web search tool call content #​7276 by @​stephentoub (co-authored by @​Copilot)
  • Surface OpenAI-compatible reasoning_content as TextReasoningContent #​7295 by @​stephentoub
  • MCP/Approvals/Tool Contents stabilization #​7299 by @​jozkee
  • Implement time_to_first_chunk and time_per_output_chunk streaming metrics in OpenTelemetryChatClient #​7325 by @​stephentoub (co-authored by @​Copilot)
  • Add openai.api.type telemetry attribute to OpenAI IChatClient implementations #​7316 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenTelemetry Gen AI semantic conventions to v1.40 #​7322 by @​stephentoub (co-authored by @​Copilot)
  • Fix tool definitions emission regardless of sensitivity setting #​7346 by @​stephentoub (co-authored by @​Copilot)
  • Honor [Required] attribute in AI function parameter JSON schema generation #​7272 by @​stephentoub (co-authored by @​Copilot)
  • AddAIContentType automatically registers content type against every base in the inheritance chain up to AIContent #​7358 by @​jozkee (co-authored by @​Copilot)
  • Auto-mark server-handled FunctionCallContent as InformationalOnly #​7314 by @​stephentoub (co-authored by @​Copilot)
  • Map ReasoningEffort.None and ExtraHigh to none and xhigh in OpenAI IChatClient implementations #​7319 by @​stephentoub (co-authored by @​Copilot)
  • Handle DynamicMethod reflection limitations in AIFunctionFactory #​7287 by @​stephentoub (co-authored by @​Copilot)
  • Fix Activity.Current nulled during streaming tool invocation #​7321 by @​flaviocdc (co-authored by @​Copilot)
  • Handle FunctionCallOutputResponseItem in streaming response conversion #​7307 by @​stephentoub (co-authored by @​Copilot)
  • Fix serialization of response continuation tokens #​7356 by @​stephentoub
  • Remove AI Tool Reduction experimental APIs #​7353 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenAI to 2.9.1 #​7349 by @​stephentoub

Telemetry and Observability

  • Introduce support for the Gauge metric type #​7203 by @​rainsxng
  • Update logging source generator to support generic methods #​7331 by @​svick (co-authored by @​Copilot)
  • Update logging source generator to match runtime PR #​124589 (ref readonly/params/scoped) #​7333 by @​svick (co-authored by @​Copilot)
  • Promote FakeLogCollector.GetLogsAsync(CancellationToken) from experimental to stable #​7332 by @​Demo30
  • Remove obsolete CS1591 warning suppression from generated file preamble #​7308 by @​luissena

HTTP Resilience and Diagnostics

... (truncated)

10.3.0

Experimental API Changes

Now Stable

  • IChatReducer interface — graduated from experimental to stable. The interface is now stable; concrete implementations (MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient) remain experimental. #​7235 by @​jeffhandley
  • FunctionCallContent and FunctionResultContent unsealed — changed from sealed class to class, enabling derivation. #​7229 by @​stephentoub (co-authored by @​Copilot)

Breaking Changes to Experimental APIs

  • Experimental diagnostic ID reorganization — the blanket MEAI001 diagnostic ID was split into feature-specific constants. OpenAI-specific experimental APIs now use OPENAI001, OPENAI002, or SCME0001 instead of MEAI001. Consumers who suppressed MEAI001 for OpenAI APIs may need to suppress OPENAI001/OPENAI002 instead. #​7116 by @​jeffhandley (co-authored by @​Copilot), #​7235 by @​jeffhandley

New Experimental APIs

  • Chat reduction implementations — MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient, and UseChatReducer builder extension. #​7235 by @​jeffhandley
  • OpenAI Responses/Assistants/Realtime/Image/Audio integrations — assigned feature-specific experimental diagnostic IDs (OPENAI001, OPENAI002). #​7235 by @​jeffhandley
  • ImageGenerationToolCallContent and ImageGenerationToolResultContent — added to JSON serialization infrastructure. #​7275 by @​stephentoub (co-authored by @​Copilot)

What's Changed

AI

  • Add ReasoningOptions to ChatOptions #​7252 by @​stephentoub (co-authored by @​Copilot)
  • Add LoadFromAsync and SaveToAsync helper methods to DataContent #​7159 by @​stephentoub (co-authored by @​Copilot)
  • Add FunctionCallContent.InformationalOnly property #​7126, #​7262 by @​stephentoub (co-authored by @​Copilot)
  • Add server tool call support to OpenTelemetryChatClient per semantic conventions #​7240 by @​stephentoub (co-authored by @​Copilot)
  • Add ImageGenerationToolCallContent and ImageGenerationToolResultContent to JSON serialization infrastructure #​7275 by @​stephentoub (co-authored by @​Copilot)
  • Add logging to FunctionInvokingChatClient for approval flow, error handling, and loop control #​7228 by @​stephentoub (co-authored by @​Copilot)
  • Allow FunctionResultContent pass-through when CallId matches #​7229 by @​stephentoub (co-authored by @​Copilot)
  • Remove AIFunctionDeclaration tools on last iteration in FunctionInvokingChatClient #​7207 by @​stephentoub (co-authored by @​Copilot)
  • Propagate CachedInputTokenCount in OpenTelemetry telemetry #​7234 by @​stephentoub (co-authored by @​Copilot)
  • Categorize MEAI001 experimental APIs #​7116 by @​jeffhandley (co-authored by @​Copilot)
  • MEAI: Update Experimental / Preview Features #​7235 by @​jeffhandley
  • ToChatResponse: Merge AdditionalProperties into ChatMessage instead of ChatResponse #​7194 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient to respect ChatOptions.Tools modifications by function tools #​7218 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient invoke_agent span detection with exact match or space delimiter #​7224 by @​stephentoub (co-authored by @​Copilot)
  • Fix approval request/response correlation in FunctionInvokingChatClient #​7261 by @​stephentoub (co-authored by @​Copilot)
  • Fix DataUriParser to default to text/plain;charset=US-ASCII per RFC 2397 #​7247 by @​stephentoub (co-authored by @​Copilot)
  • Fix NRT resolution for AIFunction parameters #​7200 by @​eiriktsarpalis
  • Preserve extra JSON schema properties in ToolJson serialization #​7250 by @​stephentoub (co-authored by @​Copilot)
  • Fix token metric unit to use UCUM format {token} #​7241 by @​stephentoub
  • Fix OpenAI responses streaming to preserve encrypted reasoning content #​7266 by @​stephentoub
  • Update OpenAIResponsesChatClient to handle streaming code interpreter content #​7267 by @​stephentoub

Diagnostics, Health Checks, and Resource Monitoring

  • [5752] FakeLogCollector waiting capabilities #​6228 by @​Demo30
  • Bring new cpu.requests formula from Kubernetes #​7239 by @​amadeuszl

Service Discovery

... (truncated)

Commits viewable in compare view.

Updated Microsoft.Extensions.AI.Evaluation.Quality from 10.2.0 to 10.5.0.

Release notes

Sourced from Microsoft.Extensions.AI.Evaluation.Quality's releases.

10.5.0

HTTP Logging Middleware APIs in Microsoft.AspNetCore.Diagnostics.Middleware are now stable. This release also transfers Microsoft.Extensions.VectorData.Abstractions and Microsoft.Extensions.VectorData.ConformanceTests from the Semantic Kernel repository into dotnet/extensions, jumping from 10.1.0 to 10.5.0 for consistent versioning. The release also delivers fixes across the AI libraries, AI Evaluation, and Service Discovery.

Breaking Changes

  1. Rename VectorStoreVectorAttribute constructor parameter #​7460
    • The Dimensions parameter was renamed to dimensions (lowercase). This is a source-breaking change only — binary compatibility is preserved.
    • If you use the named argument syntax new VectorStoreVectorAttribute(Dimensions: 1536), update it to new VectorStoreVectorAttribute(dimensions: 1536).

Experimental API Changes

Now Stable

  • HTTP Logging Middleware APIs are now stable (previously EXTEXP0013): AddHttpLogEnricher<T>, IHttpLogEnricher, and RequestHeadersLogEnricherOptions.HeadersDataClasses #​7380

What's Changed

AI

  • Fix OpenAIResponsesChatClient to respect "store":false in responses #​7417 by @​stephentoub
  • Fix InvalidOperationException in CoalesceWebSearchToolCallContent #​7419 by @​stephentoub
  • Handle F# optional parameters in AIFunctionFactory schema generation #​7439 by @​eiriktsarpalis
  • Fix ComputerCallResponseItem using Item.Id instead of CallId #​7446 by @​jozkee
  • Fix HostedFileContent with image MIME type sent as input_file instead of input_image #​7438 by @​stephentoub (co-authored by @​copilot)
  • Guard Activity.Current restore with null check in OpenTelemetry streaming clients #​7443 by @​stephentoub (co-authored by @​copilot)
  • Enable stateless mode in remote MCP server template (released as v1.2.0 on 2026-04-01) #​7441 by @​jeffhandley

Vector Data

  • Move Microsoft.Extensions.VectorData.Abstractions over from Semantic Kernel #​7434 by @​roji
  • Rename VectorStoreVectorAttribute dimensions constructor parameter #​7460 by @​roji

AI Evaluation

  • Add Path Validation for DiskBasedResponseCache and DiskBasedResultStore #​7397 by @​peterwald
  • Update brace-expansion for CVE-2026-33750 #​7457 by @​SamMonoRT

ASP.NET Core Extensions

  • Removing experimental attribute from Http logging middleware #​7380 by @​mariamgerges

Service Discovery

  • Implement RFC6761 reserved DNS names handling #​6924 by @​rzikm

Documentation Updates

  • Remove per-library CHANGELOG.md files #​7413 by @​jeffhandley

Test Improvements

... (truncated)

10.4.1

This release of the Microsoft.Extensions.AI packages adds new experimental APIs for Realtime client sessions and Text-to-Speech, along with OpenTelemetry and middleware improvements.

Packages in this release

Package Version
Microsoft.Extensions.AI.Abstractions 10.4.1
Microsoft.Extensions.AI 10.4.1
Microsoft.Extensions.AI.OpenAI 10.4.1

Experimental API Changes

New Experimental APIs

  • New experimental API: Realtime Client Sessions #​7285 and #​7399
  • New experimental API: Text-to-Speech Client #​7381

Changes to Experimental APIs

  • Hosted File Download Stream: write-path methods now explicitly throw NotSupportedException #​7394

What's Changed

AI

  • Add ITextToSpeechClient abstraction, middleware, and OpenAI implementation #​7381 by @​stephentoub
  • Realtime Client Proposal #​7285 by @​tarekgh
  • Add VoiceActivityDetection options to realtime session abstractions #​7399 by @​tarekgh
  • Make UriContent mediaType parameter optional with inference from URI file extension #​7398 by @​stephentoub (co-authored by @​Copilot)
  • Emit gen_ai.client.operation.exception via ILogger LoggerMessage on OpenTelemetry instrumentation classes #​7379 by @​stephentoub (co-authored by @​Copilot)
  • Support invoke_workflow as an equivalent parent span to invoke_agent in FunctionInvokingChatClient #​7382 by @​stephentoub (co-authored by @​Copilot)
  • Make HostedFileDownloadStream explicitly read-only #​7394 by @​stephentoub (co-authored by @​Copilot)

Documentation Updates

  • Document JSON schema derivation for return types in AIFunctionFactory #​7400 by @​stephentoub (co-authored by @​Copilot)

Test Improvements

  • Fix test warnings #​7369 by @​jozkee
  • Add tests for JSON deserialization of serializable types #​7373 by @​stephentoub (co-authored by @​Copilot)

Repository Infrastructure Updates

  • Update Package Validation Baseline to 10.4.0 #​7389 by @​jeffhandley (co-authored by @​Copilot)
  • Update ModelContextProtocol libraries to version 1.0.0 #​7340 by @​stephentoub (co-authored by @​Copilot)

Acknowledgements

  • @​eiriktsarpalis @​ericstj @​CodeBlanch @​lmolkova @​adamsitnik @​joperezr reviewed pull requests
    ... (truncated)

10.4.0

This release advances the AI abstractions with new hosted file, web search, and reasoning content types, stabilizes MCP and tool approval APIs, adds streaming latency metrics to OpenTelemetry instrumentation, and delivers bug fixes across caching, data ingestion, and resource monitoring.

Experimental API Changes

Now Stable

  • MCP Server Tool Content and Function Call Approval APIs are now stable (previously MEAI001) #​7299
  • FakeLogCollector.GetLogsAsync(CancellationToken) is now stable (previously EXTEXP0003) #​7332

New Experimental APIs

  • New experimental AddExtendedHttpClientLogging overloads with wrapHandlersPipeline parameter (EXTEXP0013) #​7231

Removed Experimental APIs

  • AI Tool Reduction experimental APIs removed (was experimental under MEAI001) #​7353

What's Changed

AI

  • Add IHostedFileClient and friends #​7269 by @​stephentoub
  • Add web search tool call content #​7276 by @​stephentoub (co-authored by @​Copilot)
  • Surface OpenAI-compatible reasoning_content as TextReasoningContent #​7295 by @​stephentoub
  • MCP/Approvals/Tool Contents stabilization #​7299 by @​jozkee
  • Implement time_to_first_chunk and time_per_output_chunk streaming metrics in OpenTelemetryChatClient #​7325 by @​stephentoub (co-authored by @​Copilot)
  • Add openai.api.type telemetry attribute to OpenAI IChatClient implementations #​7316 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenTelemetry Gen AI semantic conventions to v1.40 #​7322 by @​stephentoub (co-authored by @​Copilot)
  • Fix tool definitions emission regardless of sensitivity setting #​7346 by @​stephentoub (co-authored by @​Copilot)
  • Honor [Required] attribute in AI function parameter JSON schema generation #​7272 by @​stephentoub (co-authored by @​Copilot)
  • AddAIContentType automatically registers content type against every base in the inheritance chain up to AIContent #​7358 by @​jozkee (co-authored by @​Copilot)
  • Auto-mark server-handled FunctionCallContent as InformationalOnly #​7314 by @​stephentoub (co-authored by @​Copilot)
  • Map ReasoningEffort.None and ExtraHigh to none and xhigh in OpenAI IChatClient implementations #​7319 by @​stephentoub (co-authored by @​Copilot)
  • Handle DynamicMethod reflection limitations in AIFunctionFactory #​7287 by @​stephentoub (co-authored by @​Copilot)
  • Fix Activity.Current nulled during streaming tool invocation #​7321 by @​flaviocdc (co-authored by @​Copilot)
  • Handle FunctionCallOutputResponseItem in streaming response conversion #​7307 by @​stephentoub (co-authored by @​Copilot)
  • Fix serialization of response continuation tokens #​7356 by @​stephentoub
  • Remove AI Tool Reduction experimental APIs #​7353 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenAI to 2.9.1 #​7349 by @​stephentoub

Telemetry and Observability

  • Introduce support for the Gauge metric type #​7203 by @​rainsxng
  • Update logging source generator to support generic methods #​7331 by @​svick (co-authored by @​Copilot)
  • Update logging source generator to match runtime PR #​124589 (ref readonly/params/scoped) #​7333 by @​svick (co-authored by @​Copilot)
  • Promote FakeLogCollector.GetLogsAsync(CancellationToken) from experimental to stable #​7332 by @​Demo30
  • Remove obsolete CS1591 warning suppression from generated file preamble #​7308 by @​luissena

HTTP Resilience and Diagnostics

... (truncated)

10.3.0

Experimental API Changes

Now Stable

  • IChatReducer interface — graduated from experimental to stable. The interface is now stable; concrete implementations (MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient) remain experimental. #​7235 by @​jeffhandley
  • FunctionCallContent and FunctionResultContent unsealed — changed from sealed class to class, enabling derivation. #​7229 by @​stephentoub (co-authored by @​Copilot)

Breaking Changes to Experimental APIs

  • Experimental diagnostic ID reorganization — the blanket MEAI001 diagnostic ID was split into feature-specific constants. OpenAI-specific experimental APIs now use OPENAI001, OPENAI002, or SCME0001 instead of MEAI001. Consumers who suppressed MEAI001 for OpenAI APIs may need to suppress OPENAI001/OPENAI002 instead. #​7116 by @​jeffhandley (co-authored by @​Copilot), #​7235 by @​jeffhandley

New Experimental APIs

  • Chat reduction implementations — MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient, and UseChatReducer builder extension. #​7235 by @​jeffhandley
  • OpenAI Responses/Assistants/Realtime/Image/Audio integrations — assigned feature-specific experimental diagnostic IDs (OPENAI001, OPENAI002). #​7235 by @​jeffhandley
  • ImageGenerationToolCallContent and ImageGenerationToolResultContent — added to JSON serialization infrastructure. #​7275 by @​stephentoub (co-authored by @​Copilot)

What's Changed

AI

  • Add ReasoningOptions to ChatOptions #​7252 by @​stephentoub (co-authored by @​Copilot)
  • Add LoadFromAsync and SaveToAsync helper methods to DataContent #​7159 by @​stephentoub (co-authored by @​Copilot)
  • Add FunctionCallContent.InformationalOnly property #​7126, #​7262 by @​stephentoub (co-authored by @​Copilot)
  • Add server tool call support to OpenTelemetryChatClient per semantic conventions #​7240 by @​stephentoub (co-authored by @​Copilot)
  • Add ImageGenerationToolCallContent and ImageGenerationToolResultContent to JSON serialization infrastructure #​7275 by @​stephentoub (co-authored by @​Copilot)
  • Add logging to FunctionInvokingChatClient for approval flow, error handling, and loop control #​7228 by @​stephentoub (co-authored by @​Copilot)
  • Allow FunctionResultContent pass-through when CallId matches #​7229 by @​stephentoub (co-authored by @​Copilot)
  • Remove AIFunctionDeclaration tools on last iteration in FunctionInvokingChatClient #​7207 by @​stephentoub (co-authored by @​Copilot)
  • Propagate CachedInputTokenCount in OpenTelemetry telemetry #​7234 by @​stephentoub (co-authored by @​Copilot)
  • Categorize MEAI001 experimental APIs #​7116 by @​jeffhandley (co-authored by @​Copilot)
  • MEAI: Update Experimental / Preview Features #​7235 by @​jeffhandley
  • ToChatResponse: Merge AdditionalProperties into ChatMessage instead of ChatResponse #​7194 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient to respect ChatOptions.Tools modifications by function tools #​7218 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient invoke_agent span detection with exact match or space delimiter #​7224 by @​stephentoub (co-authored by @​Copilot)
  • Fix approval request/response correlation in FunctionInvokingChatClient #​7261 by @​stephentoub (co-authored by @​Copilot)
  • Fix DataUriParser to default to text/plain;charset=US-ASCII per RFC 2397 #​7247 by @​stephentoub (co-authored by @​Copilot)
  • Fix NRT resolution for AIFunction parameters #​7200 by @​eiriktsarpalis
  • Preserve extra JSON schema properties in ToolJson serialization #​7250 by @​stephentoub (co-authored by @​Copilot)
  • Fix token metric unit to use UCUM format {token} #​7241 by @​stephentoub
  • Fix OpenAI responses streaming to preserve encrypted reasoning content #​7266 by @​stephentoub
  • Update OpenAIResponsesChatClient to handle streaming code interpreter content #​7267 by @​stephentoub

Diagnostics, Health Checks, and Resource Monitoring

  • [5752] FakeLogCollector waiting capabilities #​6228 by @​Demo30
  • Bring new cpu.requests formula from Kubernetes #​7239 by @​amadeuszl

Service Discovery

... (truncated)

Commits viewable in compare view.

Updated Microsoft.Extensions.AI.Evaluation.Reporting from 10.2.0 to 10.5.0.

Release notes

Sourced from Microsoft.Extensions.AI.Evaluation.Reporting's releases.

10.5.0

HTTP Logging Middleware APIs in Microsoft.AspNetCore.Diagnostics.Middleware are now stable. This release also transfers Microsoft.Extensions.VectorData.Abstractions and Microsoft.Extensions.VectorData.ConformanceTests from the Semantic Kernel repository into dotnet/extensions, jumping from 10.1.0 to 10.5.0 for consistent versioning. The release also delivers fixes across the AI libraries, AI Evaluation, and Service Discovery.

Breaking Changes

  1. Rename VectorStoreVectorAttribute constructor parameter #​7460
    • The Dimensions parameter was renamed to dimensions (lowercase). This is a source-breaking change only — binary compatibility is preserved.
    • If you use the named argument syntax new VectorStoreVectorAttribute(Dimensions: 1536), update it to new VectorStoreVectorAttribute(dimensions: 1536).

Experimental API Changes

Now Stable

  • HTTP Logging Middleware APIs are now stable (previously EXTEXP0013): AddHttpLogEnricher<T>, IHttpLogEnricher, and RequestHeadersLogEnricherOptions.HeadersDataClasses #​7380

What's Changed

AI

  • Fix OpenAIResponsesChatClient to respect "store":false in responses #​7417 by @​stephentoub
  • Fix InvalidOperationException in CoalesceWebSearchToolCallContent #​7419 by @​stephentoub
  • Handle F# optional parameters in AIFunctionFactory schema generation #​7439 by @​eiriktsarpalis
  • Fix ComputerCallResponseItem using Item.Id instead of CallId #​7446 by @​jozkee
  • Fix HostedFileContent with image MIME type sent as input_file instead of input_image #​7438 by @​stephentoub (co-authored by @​copilot)
  • Guard Activity.Current restore with null check in OpenTelemetry streaming clients #​7443 by @​stephentoub (co-authored by @​copilot)
  • Enable stateless mode in remote MCP server template (released as v1.2.0 on 2026-04-01) #​7441 by @​jeffhandley

Vector Data

  • Move Microsoft.Extensions.VectorData.Abstractions over from Semantic Kernel #​7434 by @​roji
  • Rename VectorStoreVectorAttribute dimensions constructor parameter #​7460 by @​roji

AI Evaluation

  • Add Path Validation for DiskBasedResponseCache and DiskBasedResultStore #​7397 by @​peterwald
  • Update brace-expansion for CVE-2026-33750 #​7457 by @​SamMonoRT

ASP.NET Core Extensions

  • Removing experimental attribute from Http logging middleware #​7380 by @​mariamgerges

Service Discovery

  • Implement RFC6761 reserved DNS names handling #​6924 by @​rzikm

Documentation Updates

  • Remove per-library CHANGELOG.md files #​7413 by @​jeffhandley

Test Improvements

... (truncated)

10.4.1

This release of the Microsoft.Extensions.AI packages adds new experimental APIs for Realtime client sessions and Text-to-Speech, along with OpenTelemetry and middleware improvements.

Packages in this release

Package Version
Microsoft.Extensions.AI.Abstractions 10.4.1
Microsoft.Extensions.AI 10.4.1
Microsoft.Extensions.AI.OpenAI 10.4.1

Experimental API Changes

New Experimental APIs

  • New experimental API: Realtime Client Sessions #​7285 and #​7399
  • New experimental API: Text-to-Speech Client #​7381

Changes to Experimental APIs

  • Hosted File Download Stream: write-path methods now explicitly throw NotSupportedException #​7394

What's Changed

AI

  • Add ITextToSpeechClient abstraction, middleware, and OpenAI implementation #​7381 by @​stephentoub
  • Realtime Client Proposal #​7285 by @​tarekgh
  • Add VoiceActivityDetection options to realtime session abstractions #​7399 by @​tarekgh
  • Make UriContent mediaType parameter optional with inference from URI file extension #​7398 by @​stephentoub (co-authored by @​Copilot)
  • Emit gen_ai.client.operation.exception via ILogger LoggerMessage on OpenTelemetry instrumentation classes #​7379 by @​stephentoub (co-authored by @​Copilot)
  • Support invoke_workflow as an equivalent parent span to invoke_agent in FunctionInvokingChatClient #​7382 by @​stephentoub (co-authored by @​Copilot)
  • Make HostedFileDownloadStream explicitly read-only #​7394 by @​stephentoub (co-authored by @​Copilot)

Documentation Updates

  • Document JSON schema derivation for return types in AIFunctionFactory #​7400 by @​stephentoub (co-authored by @​Copilot)

Test Improvements

  • Fix test warnings #​7369 by @​jozkee
  • Add tests for JSON deserialization of serializable types #​7373 by @​stephentoub (co-authored by @​Copilot)

Repository Infrastructure Updates

  • Update Package Validation Baseline to 10.4.0 #​7389 by @​jeffhandley (co-authored by @​Copilot)
  • Update ModelContextProtocol libraries to version 1.0.0 #​7340 by @​stephentoub (co-authored by @​Copilot)

Acknowledgements

  • @​eiriktsarpalis @​ericstj @​CodeBlanch @​lmolkova @​adamsitnik @​joperezr reviewed pull requests
    ... (truncated)

10.4.0

This release advances the AI abstractions with new hosted file, web search, and reasoning content types, stabilizes MCP and tool approval APIs, adds streaming latency metrics to OpenTelemetry instrumentation, and delivers bug fixes across caching, data ingestion, and resource monitoring.

Experimental API Changes

Now Stable

  • MCP Server Tool Content and Function Call Approval APIs are now stable (previously MEAI001) #​7299
  • FakeLogCollector.GetLogsAsync(CancellationToken) is now stable (previously EXTEXP0003) #​7332

New Experimental APIs

  • New experimental AddExtendedHttpClientLogging overloads with wrapHandlersPipeline parameter (EXTEXP0013) #​7231

Removed Experimental APIs

  • AI Tool Reduction experimental APIs removed (was experimental under MEAI001) #​7353

What's Changed

AI

  • Add IHostedFileClient and friends #​7269 by @​stephentoub
  • Add web search tool call content #​7276 by @​stephentoub (co-authored by @​Copilot)
  • Surface OpenAI-compatible reasoning_content as TextReasoningContent #​7295 by @​stephentoub
  • MCP/Approvals/Tool Contents stabilization #​7299 by @​jozkee
  • Implement time_to_first_chunk and time_per_output_chunk streaming metrics in OpenTelemetryChatClient #​7325 by @​stephentoub (co-authored by @​Copilot)
  • Add openai.api.type telemetry attribute to OpenAI IChatClient implementations #​7316 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenTelemetry Gen AI semantic conventions to v1.40 #​7322 by @​stephentoub (co-authored by @​Copilot)
  • Fix tool definitions emission regardless of sensitivity setting #​7346 by @​stephentoub (co-authored by @​Copilot)
  • Honor [Required] attribute in AI function parameter JSON schema generation #​7272 by @​stephentoub (co-authored by @​Copilot)
  • AddAIContentType automatically registers content type against every base in the inheritance chain up to AIContent #​7358 by @​jozkee (co-authored by @​Copilot)
  • Auto-mark server-handled FunctionCallContent as InformationalOnly #​7314 by @​stephentoub (co-authored by @​Copilot)
  • Map ReasoningEffort.None and ExtraHigh to none and xhigh in OpenAI IChatClient implementations #​7319 by @​stephentoub (co-authored by @​Copilot)
  • Handle DynamicMethod reflection limitations in AIFunctionFactory #​7287 by @​stephentoub (co-authored by @​Copilot)
  • Fix Activity.Current nulled during streaming tool invocation #​7321 by @​flaviocdc (co-authored by @​Copilot)
  • Handle FunctionCallOutputResponseItem in streaming response conversion #​7307 by @​stephentoub (co-authored by @​Copilot)
  • Fix serialization of response continuation tokens #​7356 by @​stephentoub
  • Remove AI Tool Reduction experimental APIs #​7353 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenAI to 2.9.1 #​7349 by @​stephentoub

Telemetry and Observability

  • Introduce support for the Gauge metric type #​7203 by @​rainsxng
  • Update logging source generator to support generic methods #​7331 by @​svick (co-authored by @​Copilot)
  • Update logging source generator to match runtime PR #​124589 (ref readonly/params/scoped) #​7333 by @​svick (co-authored by @​Copilot)
  • Promote FakeLogCollector.GetLogsAsync(CancellationToken) from experimental to stable #​7332 by @​Demo30
  • Remove obsolete CS1591 warning suppression from generated file preamble #​7308 by @​luissena

HTTP Resilience and Diagnostics

... (truncated)

10.3.0

Experimental API Changes

Now Stable

  • IChatReducer interface — graduated from experimental to stable. The interface is now stable; concrete implementations (MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient) remain experimental. #​7235 by @​jeffhandley
  • FunctionCallContent and FunctionResultContent unsealed — changed from sealed class to class, enabling derivation. #​7229 by @​stephentoub (co-authored by @​Copilot)

Breaking Changes to Experimental APIs

  • Experimental diagnostic ID reorganization — the blanket MEAI001 diagnostic ID was split into feature-specific constants. OpenAI-specific experimental APIs now use OPENAI001, OPENAI002, or SCME0001 instead of MEAI001. Consumers who suppressed MEAI001 for OpenAI APIs may need to suppress OPENAI001/OPENAI002 instead. #​7116 by @​jeffhandley (co-authored by @​Copilot), #​7235 by @​jeffhandley

New Experimental APIs

  • Chat reduction implementations — MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient, and UseChatReducer builder extension. #​7235 by @​jeffhandley
  • OpenAI Responses/Assistants/Realtime/Image/Audio integrations — assigned feature-specific experimental diagnostic IDs (OPENAI001, OPENAI002). #​7235 by @​jeffhandley
  • ImageGenerationToolCallContent and ImageGenerationToolResultContent — added to JSON serialization infrastructure. #​7275 by @​stephentoub (co-authored by @​Copilot)

What's Changed

AI

  • Add ReasoningOptions to ChatOptions #​7252 by @​stephentoub (co-authored by @​Copilot)
  • Add LoadFromAsync and SaveToAsync helper methods to DataContent #​7159 by @​stephentoub (co-authored by @​Copilot)
  • Add FunctionCallContent.InformationalOnly property #​7126, #​7262 by @​stephentoub (co-authored by @​Copilot)
  • Add server tool call support to OpenTelemetryChatClient per semantic conventions #​7240 by @​stephentoub (co-authored by @​Copilot)
  • Add ImageGenerationToolCallContent and ImageGenerationToolResultContent to JSON serialization infrastructure #​7275 by @​stephentoub (co-authored by @​Copilot)
  • Add logging to FunctionInvokingChatClient for approval flow, error handling, and loop control #​7228 by @​stephentoub (co-authored by @​Copilot)
  • Allow FunctionResultContent pass-through when CallId matches #​7229 by @​stephentoub (co-authored by @​Copilot)
  • Remove AIFunctionDeclaration tools on last iteration in FunctionInvokingChatClient #​7207 by @​stephentoub (co-authored by @​Copilot)
  • Propagate CachedInputTokenCount in OpenTelemetry telemetry #​7234 by @​stephentoub (co-authored by @​Copilot)
  • Categorize MEAI001 experimental APIs #​7116 by @​jeffhandley (co-authored by @​Copilot)
  • MEAI: Update Experimental / Preview Features #​7235 by @​jeffhandley
  • ToChatResponse: Merge AdditionalProperties into ChatMessage instead of ChatResponse #​7194 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient to respect ChatOptions.Tools modifications by function tools #​7218 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient invoke_agent span detection with exact match or space delimiter #​7224 by @​stephentoub (co-authored by @​Copilot)
  • Fix approval request/response correlation in FunctionInvokingChatClient #​7261 by @​stephentoub (co-authored by @​Copilot)
  • Fix DataUriParser to default to text/plain;charset=US-ASCII per RFC 2397 #​7247 by @​stephentoub (co-authored by @​Copilot)
  • Fix NRT resolution for AIFunction parameters #​7200 by @​eiriktsarpalis
  • Preserve extra JSON schema properties in ToolJson serialization #​7250 by @​stephentoub (co-authored by @​Copilot)
  • Fix token metric unit to use UCUM format {token} #​7241 by @​stephentoub
  • Fix OpenAI responses streaming to preserve encrypted reasoning content #​7266 by @​stephentoub
  • Update OpenAIResponsesChatClient to handle streaming code interpreter content #​7267 by @​stephentoub

Diagnostics, Health Checks, and Resource Monitoring

  • [5752] FakeLogCollector waiting capabilities #​6228 by @​Demo30
  • Bring new cpu.requests formula from Kubernetes #​7239 by @​amadeuszl

Service Discovery

... (truncated)

Commits viewable in compare view.

Updated Microsoft.Extensions.AI.OpenAI from 9.4.3-preview.1.25230.7 to 10.5.0.

Release notes

Sourced from Microsoft.Extensions.AI.OpenAI's releases.

10.5.0

HTTP Logging Middleware APIs in Microsoft.AspNetCore.Diagnostics.Middleware are now stable. This release also transfers Microsoft.Extensions.VectorData.Abstractions and Microsoft.Extensions.VectorData.ConformanceTests from the Semantic Kernel repository into dotnet/extensions, jumping from 10.1.0 to 10.5.0 for consistent versioning. The release also delivers fixes across the AI libraries, AI Evaluation, and Service Discovery.

Breaking Changes

  1. Rename VectorStoreVectorAttribute constructor parameter #​7460
    • The Dimensions parameter was renamed to dimensions (lowercase). This is a source-breaking change only — binary compatibility is preserved.
    • If you use the named argument syntax new VectorStoreVectorAttribute(Dimensions: 1536), update it to new VectorStoreVectorAttribute(dimensions: 1536).

Experimental API Changes

Now Stable

  • HTTP Logging Middleware APIs are now stable (previously EXTEXP0013): AddHttpLogEnricher<T>, IHttpLogEnricher, and RequestHeadersLogEnricherOptions.HeadersDataClasses #​7380

What's Changed

AI

  • Fix OpenAIResponsesChatClient to respect "store":false in responses #​7417 by @​stephentoub
  • Fix InvalidOperationException in CoalesceWebSearchToolCallContent #​7419 by @​stephentoub
  • Handle F# optional parameters in AIFunctionFactory schema generation #​7439 by @​eiriktsarpalis
  • Fix ComputerCallResponseItem using Item.Id instead of CallId #​7446 by @​jozkee
  • Fix HostedFileContent with image MIME type sent as input_file instead of input_image #​7438 by @​stephentoub (co-authored by @​copilot)
  • Guard Activity.Current restore with null check in OpenTelemetry streaming clients #​7443 by @​stephentoub (co-authored by @​copilot)
  • Enable stateless mode in remote MCP server template (released as v1.2.0 on 2026-04-01) #​7441 by @​jeffhandley

Vector Data

  • Move Microsoft.Extensions.VectorData.Abstractions over from Semantic Kernel #​7434 by @​roji
  • Rename VectorStoreVectorAttribute dimensions constructor parameter #​7460 by @​roji

AI Evaluation

  • Add Path Validation for DiskBasedResponseCache and DiskBasedResultStore #​7397 by @​peterwald
  • Update brace-expansion for CVE-2026-33750 #​7457 by @​SamMonoRT

ASP.NET Core Extensions

  • Removing experimental attribute from Http logging middleware #​7380 by @​mariamgerges

Service Discovery

  • Implement RFC6761 reserved DNS names handling #​6924 by @​rzikm

Documentation Updates

  • Remove per-library CHANGELOG.md files #​7413 by @​jeffhandley

Test Improvements

... (truncated)

10.4.1

This release of the Microsoft.Extensions.AI packages adds new experimental APIs for Realtime client sessions and Text-to-Speech, along with OpenTelemetry and middleware improvements.

Packages in this release

Package Version
Microsoft.Extensions.AI.Abstractions 10.4.1
Microsoft.Extensions.AI 10.4.1
Microsoft.Extensions.AI.OpenAI 10.4.1

Experimental API Changes

New Experimental APIs

  • New experimental API: Realtime Client Sessions #​7285 and #​7399
  • New experimental API: Text-to-Speech Client #​7381

Changes to Experimental APIs

  • Hosted File Download Stream: write-path methods now explicitly throw NotSupportedException #​7394

What's Changed

AI

  • Add ITextToSpeechClient abstraction, middleware, and OpenAI implementation #​7381 by @​stephentoub
  • Realtime Client Proposal #​7285 by @​tarekgh
  • Add VoiceActivityDetection options to realtime session abstractions #​7399 by @​tarekgh
  • Make UriContent mediaType parameter optional with inference from URI file extension #​7398 by @​stephentoub (co-authored by @​Copilot)
  • Emit gen_ai.client.operation.exception via ILogger LoggerMessage on OpenTelemetry instrumentation classes #​7379 by @​stephentoub (co-authored by @​Copilot)
  • Support invoke_workflow as an equivalent parent span to invoke_agent in FunctionInvokingChatClient #​7382 by @​stephentoub (co-authored by @​Copilot)
  • Make HostedFileDownloadStream explicitly read-only #​7394 by @​stephentoub (co-authored by @​Copilot)

Documentation Updates

  • Document JSON schema derivation for return types in AIFunctionFactory #​7400 by @​stephentoub (co-authored by @​Copilot)

Test Improvements

  • Fix test warnings #​7369 by @​jozkee
  • Add tests for JSON deserialization of serializable types #​7373 by @​stephentoub (co-authored by @​Copilot)

Repository Infrastructure Updates

  • Update Package Validation Baseline to 10.4.0 #​7389 by @​jeffhandley (co-authored by @​Copilot)
  • Update ModelContextProtocol libraries to version 1.0.0 #​7340 by @​stephentoub (co-authored by @​Copilot)

Acknowledgements

  • @​eiriktsarpalis @​ericstj @​CodeBlanch @​lmolkova @​adamsitnik @​joperezr reviewed pull requests
    ... (truncated)

10.4.0

This release advances the AI abstractions with new hosted file, web search, and reasoning content types, stabilizes MCP and tool approval APIs, adds streaming latency metrics to OpenTelemetry instrumentation, and delivers bug fixes across caching, data ingestion, and resource monitoring.

Experimental API Changes

Now Stable

  • MCP Server Tool Content and Function Call Approval APIs are now stable (previously MEAI001) #​7299
  • FakeLogCollector.GetLogsAsync(CancellationToken) is now stable (previously EXTEXP0003) #​7332

New Experimental APIs

  • New experimental AddExtendedHttpClientLogging overloads with wrapHandlersPipeline parameter (EXTEXP0013) #​7231

Removed Experimental APIs

  • AI Tool Reduction experimental APIs removed (was experimental under MEAI001) #​7353

What's Changed

AI

  • Add IHostedFileClient and friends #​7269 by @​stephentoub
  • Add web search tool call content #​7276 by @​stephentoub (co-authored by @​Copilot)
  • Surface OpenAI-compatible reasoning_content as TextReasoningContent #​7295 by @​stephentoub
  • MCP/Approvals/Tool Contents stabilization #​7299 by @​jozkee
  • Implement time_to_first_chunk and time_per_output_chunk streaming metrics in OpenTelemetryChatClient #​7325 by @​stephentoub (co-authored by @​Copilot)
  • Add openai.api.type telemetry attribute to OpenAI IChatClient implementations #​7316 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenTelemetry Gen AI semantic conventions to v1.40 #​7322 by @​stephentoub (co-authored by @​Copilot)
  • Fix tool definitions emission regardless of sensitivity setting #​7346 by @​stephentoub (co-authored by @​Copilot)
  • Honor [Required] attribute in AI function parameter JSON schema generation #​7272 by @​stephentoub (co-authored by @​Copilot)
  • AddAIContentType automatically registers content type against every base in the inheritance chain up to AIContent #​7358 by @​jozkee (co-authored by @​Copilot)
  • Auto-mark server-handled FunctionCallContent as InformationalOnly #​7314 by @​stephentoub (co-authored by @​Copilot)
  • Map ReasoningEffort.None and ExtraHigh to none and xhigh in OpenAI IChatClient implementations #​7319 by @​stephentoub (co-authored by @​Copilot)
  • Handle DynamicMethod reflection limitations in AIFunctionFactory #​7287 by @​stephentoub (co-authored by @​Copilot)
  • Fix Activity.Current nulled during streaming tool invocation #​7321 by @​flaviocdc (co-authored by @​Copilot)
  • Handle FunctionCallOutputResponseItem in streaming response conversion #​7307 by @​stephentoub (co-authored by @​Copilot)
  • Fix serialization of response continuation tokens #​7356 by @​stephentoub
  • Remove AI Tool Reduction experimental APIs #​7353 by @​stephentoub (co-authored by @​Copilot)
  • Update OpenAI to 2.9.1 #​7349 by @​stephentoub

Telemetry and Observability

  • Introduce support for the Gauge metric type #​7203 by @​rainsxng
  • Update logging source generator to support generic methods #​7331 by @​svick (co-authored by @​Copilot)
  • Update logging source generator to match runtime PR #​124589 (ref readonly/params/scoped) #​7333 by @​svick (co-authored by @​Copilot)
  • Promote FakeLogCollector.GetLogsAsync(CancellationToken) from experimental to stable #​7332 by @​Demo30
  • Remove obsolete CS1591 warning suppression from generated file preamble #​7308 by @​luissena

HTTP Resilience and Diagnostics

... (truncated)

10.3.0

Experimental API Changes

Now Stable

  • IChatReducer interface — graduated from experimental to stable. The interface is now stable; concrete implementations (MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient) remain experimental. #​7235 by @​jeffhandley
  • FunctionCallContent and FunctionResultContent unsealed — changed from sealed class to class, enabling derivation. #​7229 by @​stephentoub (co-authored by @​Copilot)

Breaking Changes to Experimental APIs

  • Experimental diagnostic ID reorganization — the blanket MEAI001 diagnostic ID was split into feature-specific constants. OpenAI-specific experimental APIs now use OPENAI001, OPENAI002, or SCME0001 instead of MEAI001. Consumers who suppressed MEAI001 for OpenAI APIs may need to suppress OPENAI001/OPENAI002 instead. #​7116 by @​jeffhandley (co-authored by @​Copilot), #​7235 by @​jeffhandley

New Experimental APIs

  • Chat reduction implementations — MessageCountingChatReducer, SummarizingChatReducer, ReducingChatClient, and UseChatReducer builder extension. #​7235 by @​jeffhandley
  • OpenAI Responses/Assistants/Realtime/Image/Audio integrations — assigned feature-specific experimental diagnostic IDs (OPENAI001, OPENAI002). #​7235 by @​jeffhandley
  • ImageGenerationToolCallContent and ImageGenerationToolResultContent — added to JSON serialization infrastructure. #​7275 by @​stephentoub (co-authored by @​Copilot)

What's Changed

AI

  • Add ReasoningOptions to ChatOptions #​7252 by @​stephentoub (co-authored by @​Copilot)
  • Add LoadFromAsync and SaveToAsync helper methods to DataContent #​7159 by @​stephentoub (co-authored by @​Copilot)
  • Add FunctionCallContent.InformationalOnly property #​7126, #​7262 by @​stephentoub (co-authored by @​Copilot)
  • Add server tool call support to OpenTelemetryChatClient per semantic conventions #​7240 by @​stephentoub (co-authored by @​Copilot)
  • Add ImageGenerationToolCallContent and ImageGenerationToolResultContent to JSON serialization infrastructure #​7275 by @​stephentoub (co-authored by @​Copilot)
  • Add logging to FunctionInvokingChatClient for approval flow, error handling, and loop control #​7228 by @​stephentoub (co-authored by @​Copilot)
  • Allow FunctionResultContent pass-through when CallId matches #​7229 by @​stephentoub (co-authored by @​Copilot)
  • Remove AIFunctionDeclaration tools on last iteration in FunctionInvokingChatClient #​7207 by @​stephentoub (co-authored by @​Copilot)
  • Propagate CachedInputTokenCount in OpenTelemetry telemetry #​7234 by @​stephentoub (co-authored by @​Copilot)
  • Categorize MEAI001 experimental APIs #​7116 by @​jeffhandley (co-authored by @​Copilot)
  • MEAI: Update Experimental / Preview Features #​7235 by @​jeffhandley
  • ToChatResponse: Merge AdditionalProperties into ChatMessage instead of ChatResponse #​7194 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient to respect ChatOptions.Tools modifications by function tools #​7218 by @​stephentoub (co-authored by @​Copilot)
  • Fix FunctionInvokingChatClient invoke_agent span detection with exact match or space delimiter #​7224 by @​stephentoub (co-authored by @​Copilot)
  • Fix approval request/response correlation in FunctionInvokingChatClient #​7261 by @​stephentoub (co-authored by @​Copilot)
  • Fix DataUriParser to default to text/plain;charset=US-ASCII per RFC 2397 #​7247 by @​s...

Description has been truncated

@dependabot
Bump the dotnet group with 10 updates
b28987e 
Bumps Azure.Identity from 1.17.1 to 1.21.0
Bumps Microsoft.Extensions.AI.Abstractions from 10.2.0 to 10.5.0
Bumps Microsoft.Extensions.AI.Evaluation from 10.2.0 to 10.5.0
Bumps Microsoft.Extensions.AI.Evaluation.Quality from 10.2.0 to 10.5.0
Bumps Microsoft.Extensions.AI.Evaluation.Reporting from 10.2.0 to 10.5.0
Bumps Microsoft.Extensions.AI.OpenAI from 9.4.3-preview.1.25230.7 to 10.5.0
Bumps Microsoft.Extensions.Configuration from 10.0.2 to 10.0.6
Bumps Microsoft.Extensions.Configuration.UserSecrets from 10.0.2 to 10.0.6
Bumps Microsoft.NET.Test.Sdk from 18.0.1 to 18.4.0
Bumps MSTest from 4.0.2 to 4.2.1

---
updated-dependencies:
- dependency-name: Azure.Identity
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.AI.Abstractions
  dependency-version: 10.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.AI.Evaluation
  dependency-version: 10.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.AI.Evaluation.Quality
  dependency-version: 10.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.AI.Evaluation.Reporting
  dependency-version: 10.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.AI.OpenAI
  dependency-version: 10.5.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Configuration
  dependency-version: 10.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Configuration.UserSecrets
  dependency-version: 10.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: MSTest
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <[email protected]>
@dependabot dependabot bot added .NET Pull requests that update .net code dependencies Pull requests that update a dependency file labels Apr 15, 2026
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