From e0be1c0e13e389a3683f317ebf3ff38a7f7bbef5 Mon Sep 17 00:00:00 2001
From: "opencode-agent[bot]"
 <219766164+opencode-agent[bot]@users.noreply.github.com>
Date: Wed, 19 Aug 2026 15:04:54 -0500
Subject: [PATCH] fix(ai): match AI SDK Azure URL handling (#43506)

Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>
---
 packages/ai/src/providers/azure.ts            |  3 +--
 packages/ai/test/provider/openai-chat.test.ts | 23 -------------------
 2 files changed, 1 insertion(+), 25 deletions(-)

diff --git a/packages/ai/src/providers/azure.ts b/packages/ai/src/providers/azure.ts
index 75e89e506b..94d5edb4c8 100644
--- a/packages/ai/src/providers/azure.ts
+++ b/packages/ai/src/providers/azure.ts
@@ -90,8 +90,7 @@ function endpoint(input: Config, modelID: string | ModelID) {
   if (input.baseURL !== undefined && !new URL(input.baseURL).hostname.endsWith(".openai.azure.com")) {
     return { baseURL, query: input.queryParams }
   }
-  // Azure's v1 API serves from /openai/v1; callers may pass the base URL with or without the version segment.
-  return { baseURL: baseURL.endsWith("/v1") ? baseURL : `${baseURL}/v1`, query }
+  return { baseURL: `${baseURL}/v1`, query }
 }
 
 export const configure = (input: Config) => {
diff --git a/packages/ai/test/provider/openai-chat.test.ts b/packages/ai/test/provider/openai-chat.test.ts
index ed557fe2b7..e7a8532e2e 100644
--- a/packages/ai/test/provider/openai-chat.test.ts
+++ b/packages/ai/test/provider/openai-chat.test.ts
@@ -277,29 +277,6 @@ describe("OpenAI Chat route", () => {
     ),
   )
 
-  it.effect("does not duplicate /v1 for already-versioned Azure Chat base URLs", () =>
-    LLMClient.generate(
-      LLMRequest.update(request, {
-        model: Azure.configure({
-          baseURL: "https://opencode-test.openai.azure.com/openai/v1/",
-          apiKey: "azure-key",
-        }).chat("gpt-4o-mini"),
-      }),
-    ).pipe(
-      Effect.provide(
-        dynamicResponse((input) =>
-          Effect.gen(function* () {
-            const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
-            expect(web.url).toBe("https://opencode-test.openai.azure.com/openai/v1/chat/completions?api-version=v1")
-            return input.respond(sseEvents(deltaChunk({}, "stop")), {
-              headers: { "content-type": "text/event-stream" },
-            })
-          }),
-        ),
-      ),
-    ),
-  )
-
   it.effect("applies serializable HTTP overlays after payload lowering", () =>
     LLMClient.generate(
       LLMRequest.update(request, {