From 3667487dd75940d81193ce4b4f7a4ea7ea3e5934 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BC=8A=E5=B0=94=E5=BC=A5=E4=BA=9A=20-=20Irmia?=
 <1269541505@qq.com>
Date: Sat, 27 Jun 2026 15:46:11 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20DeepSeek=20V4=20proxy=20model=20recognit?=
 =?UTF-8?q?ion=20=E2=80=94=20substring=20match=20instead=20of=20exact=20se?=
 =?UTF-8?q?t=20match=20for=20reasoning=5Fcontent=20injection=20(#9015)?=
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* fix: DeepSeek V4 proxy model recognition — substring match for reasoning_content

* fix: remove deepseek-chat/reasoner exclusion per review feedback
---
 astrbot/core/provider/sources/openai_source.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/astrbot/core/provider/sources/openai_source.py b/astrbot/core/provider/sources/openai_source.py
index e1aa08542..00c1f0a15 100644
--- a/astrbot/core/provider/sources/openai_source.py
+++ b/astrbot/core/provider/sources/openai_source.py
@@ -944,11 +944,13 @@ class ProviderOpenAIOfficial(Provider):
         """Finally convert the payload. Such as think part conversion, tool inject."""
         model = payloads.get("model", "").lower()
         is_gemini = "gemini" in model
-        deepseek_reasoning_models = {"deepseek-v4-pro", "deepseek-v4-flash"}
+        _deepseek_v4_markers = ("deepseek-v4-pro", "deepseek-v4-flash", "deepseek-v4")
         is_deepseek_v4_reasoning = (
-            model in deepseek_reasoning_models
+            any(marker in model for marker in _deepseek_v4_markers)
             or "api.deepseek.com" in self.client.base_url.host
         )
+        # deepseek-chat and deepseek-reasoner now point to V4 models (per official website)
+
         # MiMo 推理模型（MiMo-V2.5-Pro / MiMo-V2.5 / MiMo-V2-Pro / MiMo-V2-Omni / MiMo-V2-Flash）
         # 要求 assistant 历史消息必须回传 reasoning_content，否则返回 400
         mimo_reasoning_models = {