From 8f7ae96f152114663f0307c79a7be781b2bb5337 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AE=B6=E5=90=8D?= <chenjiaming@kezaihui.com>
Date: Sun, 5 Apr 2026 16:17:43 +0800
Subject: [PATCH] fix: make reasoning.exclude option actually suppress
 reasoning tokens

The previous implementation used a `continue` inside an inner for-loop,
which only skipped to the next provider iteration instead of preventing
the `yield` of reasoning-delta chunks. Replaced with `.some()` so the
exclude check correctly controls whether to yield the reasoning chunk.
---
 sdk/src/impl/llm.ts | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/sdk/src/impl/llm.ts b/sdk/src/impl/llm.ts
index 8d20515536..8fc68f24c9 100644
--- a/sdk/src/impl/llm.ts
+++ b/sdk/src/impl/llm.ts
@@ -711,21 +711,20 @@ export async function* promptAiSdkStream(
       throw chunkValue.error
     }
     if (chunkValue.type === 'reasoning-delta') {
-      for (const provider of ['openrouter', 'codebuff'] as const) {
-        if (
+      const reasoningExcluded = (['openrouter', 'codebuff'] as const).some(
+        (p) =>
           (
-            params.providerOptions?.[provider] as
+            params.providerOptions?.[p] as
             | OpenRouterProviderOptions
             | undefined
-          )?.reasoning?.exclude
-        ) {
-          continue
+          )?.reasoning?.exclude,
+      )
+      if (!reasoningExcluded) {
+        yield {
+          type: 'reasoning',
+          text: chunkValue.text,
         }
       }
-      yield {
-        type: 'reasoning',
-        text: chunkValue.text,
-      }
     }
     if (chunkValue.type === 'text-delta') {
       if (!params.stopSequences) {