diff --git a/README.md b/README.md
index 1c2aedc..d7d6576 100644
--- a/README.md
+++ b/README.md
@@ -157,7 +157,7 @@ Get CodeVisualizer up and running in your VS Code environment in just a few clic
 3. **Configure AI Features (Optional)**
    - Open Settings: `Ctrl+,` (Windows/Linux) or `Cmd+,` (Mac)
    - Search for "CodeVisualizer"
-   - Enable AI labels and add your API key for supported providers
+   - Enable AI labels and add your API key for supported providers, including Atlas Cloud
    - Or use Ollama for completely local AI processing
 
 4. **Start Visualizing**
diff --git a/package.json b/package.json
index 5d70741..b9eb8be 100644
--- a/package.json
+++ b/package.json
@@ -258,6 +258,7 @@
           "type": "string",
           "enum": [
             "openai",
+            "atlascloud",
             "gemini",
             "groq",
             "ollama",
diff --git a/src/core/llm/LLMManager.ts b/src/core/llm/LLMManager.ts
index 7983664..f668939 100644
--- a/src/core/llm/LLMManager.ts
+++ b/src/core/llm/LLMManager.ts
@@ -38,6 +38,7 @@ export class LLMManager {
     const providerPick = await vscode.window.showQuickPick(
       [
         { label: "OpenAI", value: "openai" },
+        { label: "Atlas Cloud", value: "atlascloud" },
         { label: "Gemini", value: "gemini" },
         { label: "Groq", value: "groq" },
         { label: "Ollama (local)", value: "ollama" },
diff --git a/src/core/llm/LLMService.ts b/src/core/llm/LLMService.ts
index 4ab5f15..2d76c3a 100644
--- a/src/core/llm/LLMService.ts
+++ b/src/core/llm/LLMService.ts
@@ -1,7 +1,7 @@
 import * as crypto from "crypto";
 import { logInfo, logWarn, logError } from "./LLMLogger";
 
-export type Provider = "openai" | "gemini" | "groq" | "ollama";
+export type Provider = "openai" | "atlascloud" | "gemini" | "groq" | "ollama";
 
 export interface TranslateParams {
   mermaidSource: string;
@@ -19,6 +19,8 @@ export class LLMService {
     switch (provider) {
       case "openai":
         return ["gpt-4o-mini", "gpt-4o", "o3-mini"];
+      case "atlascloud":
+        return ["openai/gpt-4.1-mini"];
       case "gemini":
         return ["gemini-1.5-flash", "gemini-1.5-pro"];
       case "groq":
@@ -266,6 +268,17 @@ async function callProvider(
           expectedCount,
           labels
         );
+      case "atlascloud":
+        return await callOpenAI(
+          model,
+          apiKey,
+          systemPrompt,
+          userPrompt,
+          expectedCount,
+          labels,
+          "https://api.atlascloud.ai/v1/chat/completions",
+          "Atlas Cloud"
+        );
       case "gemini":
         return await callGemini(
           model,
@@ -439,6 +452,8 @@ async function callOpenAI(
   userPrompt: string,
   expectedCount: number,
   referenceLabels: string[],
+  endpoint = "https://api.openai.com/v1/chat/completions",
+  providerName = "OpenAI",
 ): Promise<string[] | null> {
   try {
     const bodyPayload = {
@@ -450,7 +465,7 @@ async function callOpenAI(
         { role: "user", content: userPrompt },
       ],
     };
-    const res = await fetch("https://api.openai.com/v1/chat/completions", {
+    const res = await fetch(endpoint, {
       method: "POST",
       headers: {
         "Content-Type": "application/json",
@@ -461,7 +476,7 @@ async function callOpenAI(
     if (!res.ok) {
       const text = await safeReadBody(res);
       logWarn(
-        `OpenAI responded with ${res.status} ${res.statusText}. Body snippet: ${text.substring(
+        `${providerName} responded with ${res.status} ${res.statusText}. Body snippet: ${text.substring(
           0,
           500
         )}`
@@ -471,7 +486,7 @@ async function callOpenAI(
     const data: unknown = await res.json();
     if (!isOpenAIChatCompletionResponse(data)) {
       logWarn(
-        `OpenAI response shape unexpected: ${JSON.stringify(data).substring(
+        `${providerName} response shape unexpected: ${JSON.stringify(data).substring(
           0,
           500
         )}`
@@ -483,13 +498,13 @@ async function callOpenAI(
         ? data.choices[0].message.content
         : undefined;
     if (!content) {
-      logWarn("OpenAI response did not contain message content");
+      logWarn(`${providerName} response did not contain message content`);
       return null;
     }
     const parsed = parseLabelsJsonText(content, expectedCount, referenceLabels);
     if (!parsed) {
       logWarn(
-        `OpenAI output could not be parsed as JSON array. Content: ${content.substring(
+        `${providerName} output could not be parsed as JSON array. Content: ${content.substring(
           0,
           500
         )}`
@@ -498,7 +513,7 @@ async function callOpenAI(
     return parsed;
   } catch (err) {
     logError(
-      `OpenAI fetch error: ${err instanceof Error ? err.message : String(err)}`,
+      `${providerName} fetch error: ${err instanceof Error ? err.message : String(err)}`,
     );
     return null;
   }
@@ -966,4 +981,4 @@ function sanitizeLabel(label: string): string {
     s = s.slice(0, maxLen - 1).trimEnd() + "…";
   }
   return s;
-}
\ No newline at end of file
+}