fix: route Azure embed requests through deployment endpoint

core/llm/llms/OpenAI-compatible.vitest.ts

@@ -388,6 +388,8 @@ createOpenAISubclassTests(Kindo, {
 
 createOpenAISubclassTests(Azure, {
   providerName: "azure",
+  customEmbeddingsUrl:
+    "https://api.openai.com/v1/openai/deployments/text-embedding-ada-002/embeddings?api-version=2023-07-01-preview",
 });
 
 createOpenAISubclassTests(Inception, {

core/llm/llms/OpenAI.ts

@@ -705,11 +705,14 @@ class OpenAI extends BaseLLM {
       );
     }
 
-    if (this.apiType === "azure") {
-      return new URL(
-        `openai/deployments/${this.deployment}/embeddings?api-version=${this.apiVersion}`,
-        this.apiBase,
-      );
+    if (this.apiType?.includes("azure")) {
+      const isAzureOpenAI =
+        this.apiType === "azure-openai" || this.apiType === "azure";
+      const path = isAzureOpenAI
+        ? `openai/deployments/${this.deployment}/embeddings`
+        : "embeddings";
+      const version = this.apiVersion ? `?api-version=${this.apiVersion}` : "";
+      return new URL(`${path}${version}`, this.apiBase);
     }
     return new URL("embeddings", this.apiBase);
   }

core/llm/llms/OpenAI.vitest.ts

@@ -424,4 +424,38 @@ describe("OpenAI", () => {
       },
     });
   });
+
+  test("_getEmbedEndpoint should construct correct Azure deployment URL", () => {
+    const openai = new OpenAI({
+      apiType: "azure-openai",
+      apiBase: "https://test.openai.azure.com/",
+      deployment: "gpt-5.4",
+      apiVersion: "2024-02-15-preview",
+      model: "gpt-5.4",
+      apiKey: "test-key",
+    });
+
+    const endpoint = (openai as any)["_getEmbedEndpoint"]();
+    const url = endpoint.toString();
+
+    expect(url).toContain("openai/deployments/gpt-5.4/embeddings");
+    expect(url).toContain("api-version=2024-02-15-preview");
+  });
+
+  test("_getEmbedEndpoint should not use deployment path for azure-foundry", () => {
+    const openai = new OpenAI({
+      apiType: "azure-foundry",
+      apiBase: "https://test.services.ai.azure.com/",
+      apiVersion: "2024-05-01-preview",
+      model: "text-embedding-ada-002",
+      apiKey: "test-key",
+    });
+
+    const endpoint = (openai as any)["_getEmbedEndpoint"]();
+    const url = endpoint.toString();
+
+    expect(url).not.toContain("openai/deployments");
+    expect(url).toContain("embeddings");
+    expect(url).toContain("api-version=2024-05-01-preview");
+  });
 });