feat: add Azure Foundry and Azure OpenAI provider support

bun.lock

@@ -7,6 +7,7 @@
       "dependencies": {
         "@ai-sdk/amazon-bedrock": "^3.0.65",
         "@ai-sdk/anthropic": "^2.0.53",
+        "@ai-sdk/azure": "^2.0.0",
         "@ai-sdk/deepseek": "^1.0.31",
         "@ai-sdk/google": "^2.0.44",
         "@ai-sdk/mcp": "^0.0.11",
@@ -196,6 +197,8 @@
 
     "@ai-sdk/anthropic": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/provider": "2.0.0", "@ai-sdk/provider-utils": "3.0.18" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-ih7NV+OFSNWZCF+tYYD7ovvvM+gv7TRKQblpVohg2ipIwC9Y0TirzocJVREzZa/v9luxUwFbsPji++DUDWWxsg=="],
 
+    "@ai-sdk/azure": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/openai": "2.0.89", "@ai-sdk/provider": "2.0.1", "@ai-sdk/provider-utils": "3.0.20" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-9tznVSs6LGQNKKxb8pKd7CkBV9yk+a/ENpFicHCj2CmBUKefxzwJ9JbUqrlK3VF6dGZw3LXq0dWxt7/Yekaj1w=="],
+
     "@ai-sdk/deepseek": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/provider": "2.0.0", "@ai-sdk/provider-utils": "3.0.18" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-Il7WJp8bA3CmlreYSl1YzCucGTn2e5P81IANYIIEeLtWrbK0Y9CLoOCROj8xKYyUSMKlINyGZX2uP79cKewtSg=="],
 
     "@ai-sdk/gateway": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/provider": "2.0.0", "@ai-sdk/provider-utils": "3.0.18", "@vercel/oidc": "3.0.5" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-sDQcW+6ck2m0pTIHW6BPHD7S125WD3qNkx/B8sEzJp/hurocmJ5Cni0ybExg6sQMGo+fr/GWOwpHF1cmCdg5rQ=="],
@@ -3770,6 +3773,12 @@
 
     "zwitch": ["[email protected]", "", {}, "sha512-bXE4cR/kVZhKZX/RjPEflHaKVhUVl85noU3v6b8apfQEc1x4A+zBxjZ4lN8LqGd6WZ3dl98pY4o717VFmoPp+A=="],
 
+    "@ai-sdk/azure/@ai-sdk/openai": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/provider": "2.0.1", "@ai-sdk/provider-utils": "3.0.20" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-4+qWkBCbL9HPKbgrUO/F2uXZ8GqrYxHa8SWEYIzxEJ9zvWw3ISr3t1/27O1i8MGSym+PzEyHBT48EV4LAwWaEw=="],
+
+    "@ai-sdk/azure/@ai-sdk/provider": ["@ai-sdk/[email protected]", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-KCUwswvsC5VsW2PWFqF8eJgSCu5Ysj7m1TxiHTVA6g7k360bk0RNQENT8KTMAYEs+8fWPD3Uu4dEmzGHc+jGng=="],
+
+    "@ai-sdk/azure/@ai-sdk/provider-utils": ["@ai-sdk/[email protected]", "", { "dependencies": { "@ai-sdk/provider": "2.0.1", "@standard-schema/spec": "^1.0.0", "eventsource-parser": "^3.0.6" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-iXHVe0apM2zUEzauqJwqmpC37A5rihrStAih5Ks+JE32iTe4LZ58y17UGBjpQQTCRw9YxMeo2UFLxLpBluyvLQ=="],
+
     "@aws-crypto/sha256-browser/@smithy/util-utf8": ["@smithy/[email protected]", "", { "dependencies": { "@smithy/util-buffer-from": "^2.2.0", "tslib": "^2.6.2" } }, "sha512-R8Rdn8Hy72KKcebgLiv8jQcQkXoLMOGGv5uI1/k0l+snqkOzQ1R0ChUBCxWMlBsFMekWjq0wRudIweFs7sKT5A=="],
 
     "@aws-crypto/util/@smithy/util-utf8": ["@smithy/[email protected]", "", { "dependencies": { "@smithy/util-buffer-from": "^2.2.0", "tslib": "^2.6.2" } }, "sha512-R8Rdn8Hy72KKcebgLiv8jQcQkXoLMOGGv5uI1/k0l+snqkOzQ1R0ChUBCxWMlBsFMekWjq0wRudIweFs7sKT5A=="],

docs/config/providers.mdx

@@ -16,32 +16,36 @@ Most providers only need an API key. The UI handles validation and shows which p
 
 ## Supported Providers
 
-| Provider       | Models                     | Get API Key                                             |
-| -------------- | -------------------------- | ------------------------------------------------------- |
-| **Anthropic**  | Claude Opus, Sonnet, Haiku | [console.anthropic.com](https://console.anthropic.com/) |
-| **OpenAI**     | GPT-5, Codex               | [platform.openai.com](https://platform.openai.com/)     |
-| **Google**     | Gemini Pro, Flash          | [aistudio.google.com](https://aistudio.google.com/)     |
-| **xAI**        | Grok                       | [console.x.ai](https://console.x.ai/)                   |
-| **DeepSeek**   | DeepSeek Chat, Reasoner    | [platform.deepseek.com](https://platform.deepseek.com/) |
-| **OpenRouter** | 300+ models                | [openrouter.ai](https://openrouter.ai/)                 |
-| **Ollama**     | Local models               | [ollama.com](https://ollama.com/) (no key needed)       |
-| **Bedrock**    | Claude via AWS             | AWS Console                                             |
+| Provider          | Models                     | Get API Key                                             |
+| ----------------- | -------------------------- | ------------------------------------------------------- |
+| **Anthropic**     | Claude Opus, Sonnet, Haiku | [console.anthropic.com](https://console.anthropic.com/) |
+| **Azure Foundry** | Claude via Azure Foundry   | [ai.azure.com](https://ai.azure.com/)                   |
+| **Azure OpenAI**  | GPT via Azure              | [portal.azure.com](https://portal.azure.com/)           |
+| **OpenAI**        | GPT-5, Codex               | [platform.openai.com](https://platform.openai.com/)     |
+| **Google**        | Gemini Pro, Flash          | [aistudio.google.com](https://aistudio.google.com/)     |
+| **xAI**           | Grok                       | [console.x.ai](https://console.x.ai/)                   |
+| **DeepSeek**      | DeepSeek Chat, Reasoner    | [platform.deepseek.com](https://platform.deepseek.com/) |
+| **OpenRouter**    | 300+ models                | [openrouter.ai](https://openrouter.ai/)                 |
+| **Ollama**        | Local models               | [ollama.com](https://ollama.com/) (no key needed)       |
+| **Bedrock**       | Claude via AWS             | AWS Console                                             |
 
 ## Environment Variables
 
 Providers also read from environment variables as fallback:
 
 {/* BEGIN PROVIDER_ENV_VARS */}
 
-| Provider   | Environment Variable                               |
-| ---------- | -------------------------------------------------- |
-| Anthropic  | `ANTHROPIC_API_KEY` or `ANTHROPIC_AUTH_TOKEN`      |
-| OpenAI     | `OPENAI_API_KEY`                                   |
-| Google     | `GOOGLE_GENERATIVE_AI_API_KEY` or `GOOGLE_API_KEY` |
-| xAI        | `XAI_API_KEY`                                      |
-| OpenRouter | `OPENROUTER_API_KEY`                               |
-| DeepSeek   | `DEEPSEEK_API_KEY`                                 |
-| Bedrock    | `AWS_REGION` (credentials via AWS SDK chain)       |
+| Provider      | Environment Variable                                  |
+| ------------- | ----------------------------------------------------- |
+| Anthropic     | `ANTHROPIC_API_KEY` or `ANTHROPIC_AUTH_TOKEN`         |
+| Azure Foundry | `AZURE_FOUNDRY_API_KEY` and `AZURE_FOUNDRY_RESOURCE` |
+| Azure OpenAI  | `AZURE_OPENAI_API_KEY` and `AZURE_OPENAI_ENDPOINT`   |
+| OpenAI        | `OPENAI_API_KEY`                                      |
+| Google        | `GOOGLE_GENERATIVE_AI_API_KEY` or `GOOGLE_API_KEY`   |
+| xAI           | `XAI_API_KEY`                                         |
+| OpenRouter    | `OPENROUTER_API_KEY`                                  |
+| DeepSeek      | `DEEPSEEK_API_KEY`                                    |
+| Bedrock       | `AWS_REGION` (credentials via AWS SDK chain)          |
 
 <details>
 <summary>Additional environment variables</summary>
@@ -53,12 +57,8 @@ Providers also read from environment variables as fallback:
 | OpenAI       | `OPENAI_ORG_ID`            | Organization ID     |
 | Google       | `GOOGLE_BASE_URL`          | Custom API endpoint |
 | xAI          | `XAI_BASE_URL`             | Custom API endpoint |
-| Azure OpenAI | `AZURE_OPENAI_API_KEY`     | API key             |
-| Azure OpenAI | `AZURE_OPENAI_ENDPOINT`    | Endpoint URL        |
-| Azure OpenAI | `AZURE_OPENAI_DEPLOYMENT`  | Deployment name     |
-| Azure OpenAI | `AZURE_OPENAI_API_VERSION` | API version         |
-
-Azure OpenAI env vars configure the OpenAI provider with Azure backend.
+| Azure OpenAI | `AZURE_OPENAI_DEPLOYMENT`  | Deployment name (optional) |
+| Azure OpenAI | `AZURE_OPENAI_API_VERSION` | API version (optional)     |
 
 </details>
 
@@ -95,6 +95,62 @@ For advanced options not exposed in the UI, edit `~/.mux/providers.jsonc` direct
 }
 ```
 
+### Azure Foundry
+
+Azure Foundry provides access to Claude models through Microsoft's AI marketplace. It uses Anthropic's native API format.
+
+```jsonc
+{
+  "azure-foundry": {
+    "apiKey": "your-azure-api-key",
+    "resource": "your-resource-name"  // Just the resource name, not full URL
+  }
+}
+```
+
+**Getting your credentials:**
+1. Go to [Azure AI Foundry](https://ai.azure.com/)
+2. Create a project and deploy a Claude model
+3. Find your resource name (e.g., `my-resource` from `https://my-resource.services.ai.azure.com/`)
+4. Copy your API key from the Keys section
+
+**Environment variables:**
+```bash
+export AZURE_FOUNDRY_RESOURCE=your-resource-name  # Just the name, not full URL
+export AZURE_FOUNDRY_API_KEY=your-azure-api-key
+```
+
+**Note:** Azure Foundry is separate from Azure OpenAI. All Claude features work identically: streaming, tool calling, thinking, and prompt caching.
+
+### Azure OpenAI
+
+Azure OpenAI provides access to OpenAI models (GPT-5, Codex) through Microsoft Azure.
+
+```jsonc
+{
+  "azure-openai": {
+    "apiKey": "your-azure-api-key",
+    "baseUrl": "https://your-resource.cognitiveservices.azure.com",
+    "deployment": "your-deployment-name",  // Optional: defaults to model ID
+    "apiVersion": "2024-12-01-preview"     // Optional
+  }
+}
+```
+
+**Getting your credentials:**
+1. Go to [Azure Portal](https://portal.azure.com/)
+2. Create an Azure OpenAI resource
+3. Deploy a model (e.g., gpt-5.2)
+4. Copy your endpoint URL (e.g., `https://your-resource.cognitiveservices.azure.com`) and API key
+
+**Environment variables:**
+```bash
+export AZURE_OPENAI_ENDPOINT=https://your-resource.cognitiveservices.azure.com
+export AZURE_OPENAI_API_KEY=your-azure-api-key
+export AZURE_OPENAI_DEPLOYMENT=your-deployment-name  # Optional
+export AZURE_OPENAI_API_VERSION=2024-12-01-preview   # Optional
+```
+
 ### Bedrock Authentication
 
 Bedrock supports multiple authentication methods (tried in order):

package.json

@@ -47,6 +47,7 @@
   "dependencies": {
     "@ai-sdk/amazon-bedrock": "^3.0.65",
     "@ai-sdk/anthropic": "^2.0.53",
+    "@ai-sdk/azure": "^2.0.0",
     "@ai-sdk/deepseek": "^1.0.31",
     "@ai-sdk/google": "^2.0.44",
     "@ai-sdk/mcp": "^0.0.11",

src/browser/components/ProviderIcon.tsx

@@ -19,6 +19,7 @@ import { cn } from "@/common/lib/utils";
  */
 const PROVIDER_ICONS: Partial<Record<ProviderName, React.FC>> = {
   anthropic: AnthropicIcon,
+  "azure-foundry": AnthropicIcon, // Same icon as Anthropic (Claude branding)
   openai: OpenAIIcon,
   google: GoogleIcon,
   xai: XAIIcon,

src/browser/components/Settings/sections/ProvidersSection.tsx

@@ -116,6 +116,44 @@ function getProviderFields(provider: ProviderName): FieldConfig[] {
     return [];
   }
 
+  if (provider === "azure-foundry") {
+    return [
+      { key: "apiKey", label: "API Key", placeholder: "Enter API key", type: "secret" },
+      {
+        key: "resource",
+        label: "Resource",
+        placeholder: "your-resource-name",
+        type: "text",
+      },
+    ];
+  }
+
+  if (provider === "azure-openai") {
+    return [
+      { key: "apiKey", label: "API Key", placeholder: "Enter API key", type: "secret" },
+      {
+        key: "baseUrl",
+        label: "Endpoint",
+        placeholder: "https://your-resource.cognitiveservices.azure.com",
+        type: "text",
+      },
+      {
+        key: "deployment",
+        label: "Deployment",
+        placeholder: "your-deployment-name",
+        type: "text",
+        optional: true,
+      },
+      {
+        key: "apiVersion",
+        label: "API Version",
+        placeholder: "2024-12-01-preview",
+        type: "text",
+        optional: true,
+      },
+    ];
+  }
+
   // Default for most providers
   return [
     { key: "apiKey", label: "API Key", placeholder: "Enter API key", type: "secret" },
@@ -134,6 +172,8 @@ function getProviderFields(provider: ProviderName): FieldConfig[] {
  */
 const PROVIDER_KEY_URLS: Partial<Record<ProviderName, string>> = {
   anthropic: "https://console.anthropic.com/settings/keys",
+  "azure-foundry": "https://ai.azure.com/",
+  "azure-openai": "https://portal.azure.com/",
   openai: "https://platform.openai.com/api-keys",
   google: "https://aistudio.google.com/app/apikey",
   xai: "https://console.x.ai/team/default/api-keys",
@@ -430,6 +470,8 @@ export function ProvidersSection() {
       updateOptimistically(provider, { apiKeySet: editValue !== "" });
     } else if (field === "baseUrl") {
       updateOptimistically(provider, { baseUrl: editValue || undefined });
+    } else if (field === "resource") {
+      updateOptimistically(provider, { resource: editValue || undefined });
     }
 
     setEditingField(null);
@@ -449,6 +491,8 @@ export function ProvidersSection() {
         updateOptimistically(provider, { apiKeySet: false });
       } else if (field === "baseUrl") {
         updateOptimistically(provider, { baseUrl: undefined });
+      } else if (field === "resource") {
+        updateOptimistically(provider, { resource: undefined });
       }
 
       // Save in background

src/common/constants/knownModels.ts

@@ -4,7 +4,7 @@
 
 import { formatModelDisplayName } from "../utils/ai/modelDisplay";
 
-type ModelProvider = "anthropic" | "openai" | "google" | "xai";
+type ModelProvider = "anthropic" | "openai" | "google" | "xai" | "azure-foundry" | "azure-openai";
 
 interface KnownModelDefinition {
   /** Provider identifier used by SDK factories */
@@ -46,6 +46,40 @@ const MODEL_DEFINITIONS = {
     aliases: ["haiku"],
     tokenizerOverride: "anthropic/claude-3.5-haiku",
   },
+  AZURE_FOUNDRY_OPUS: {
+    provider: "azure-foundry",
+    providerModelId: "claude-opus-4-5",
+    aliases: ["azure-opus", "foundry-opus"],
+  },
+  AZURE_FOUNDRY_SONNET: {
+    provider: "azure-foundry",
+    providerModelId: "claude-sonnet-4-5",
+    aliases: ["azure-sonnet", "foundry-sonnet"],
+  },
+  AZURE_FOUNDRY_HAIKU: {
+    provider: "azure-foundry",
+    providerModelId: "claude-haiku-4-5",
+    aliases: ["azure-haiku", "foundry-haiku"],
+  },
+  // Azure OpenAI models (GPT via Azure)
+  AZURE_OPENAI_GPT: {
+    provider: "azure-openai",
+    providerModelId: "gpt-5.2",
+    aliases: ["azure-gpt"],
+    tokenizerOverride: "openai/gpt-5",
+  },
+  AZURE_OPENAI_GPT_CODEX: {
+    provider: "azure-openai",
+    providerModelId: "gpt-5.1-codex",
+    aliases: ["azure-codex"],
+    tokenizerOverride: "openai/gpt-5",
+  },
+  AZURE_OPENAI_GPT_CODEX_MAX: {
+    provider: "azure-openai",
+    providerModelId: "gpt-5.1-codex-max",
+    aliases: ["azure-codex-max"],
+    tokenizerOverride: "openai/gpt-5",
+  },
   GPT: {
     provider: "openai",
     providerModelId: "gpt-5.2",

src/common/constants/providers.ts

@@ -38,6 +38,18 @@ export const PROVIDER_DEFINITIONS = {
     factoryName: "createAnthropic",
     requiresApiKey: true,
   },
+  "azure-foundry": {
+    displayName: "Azure Foundry",
+    import: () => import("@ai-sdk/anthropic"), // Uses Anthropic SDK with Azure baseURL
+    factoryName: "createAnthropic",
+    requiresApiKey: true,
+  },
+  "azure-openai": {
+    displayName: "Azure OpenAI",
+    import: () => import("@ai-sdk/azure"), // Uses Azure OpenAI SDK
+    factoryName: "createAzure",
+    requiresApiKey: true,
+  },
   openai: {
     displayName: "OpenAI",
     import: () => import("@ai-sdk/openai"),

src/common/orpc/schemas/api.ts

@@ -100,6 +100,12 @@ export const ProviderConfigInfoSchema = z.object({
   /** Whether this provider is configured and ready to use */
   isConfigured: z.boolean(),
   baseUrl: z.string().optional(),
+  /** Azure Foundry resource name */
+  resource: z.string().optional(),
+  /** Azure OpenAI deployment name */
+  deployment: z.string().optional(),
+  /** Azure OpenAI API version */
+  apiVersion: z.string().optional(),
   models: z.array(z.string()).optional(),
   /** OpenAI-specific fields */
   serviceTier: z.enum(["auto", "default", "flex", "priority"]).optional(),