From 8604c4f57c1f5b1432cdf35044c0f7bddf71a82a Mon Sep 17 00:00:00 2001
From: Yongteng Lei <yongtengrey@outlook.com>
Date: Thu, 27 Nov 2025 17:59:17 +0800
Subject: [PATCH] =?UTF-8?q?Feat:=20add=20GPT-5.1,=20GPT=E2=80=915.1=20Inst?=
 =?UTF-8?q?ant=20and=20Claude-Opus-4.5=20(#11559)?=
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### What problem does this PR solve?

Add GPT-5.1, GPT‑5.1 Instant and Claude-Opus-4.5. #11548

### Type of change

- [x] New Feature (non-breaking change which adds functionality)
---
 conf/llm_factories.json | 21 +++++++++++++++++++++
 rag/llm/chat_model.py   |  5 +++++
 2 files changed, 26 insertions(+)

diff --git a/conf/llm_factories.json b/conf/llm_factories.json
index 71f47be2e..90602c65f 100644
--- a/conf/llm_factories.json
+++ b/conf/llm_factories.json
@@ -7,6 +7,20 @@
             "status": "1",
             "rank": "999",
             "llm": [
+                {
+                    "llm_name": "gpt-5.1",
+                    "tags": "LLM,CHAT,400k,IMAGE2TEXT",
+                    "max_tokens": 400000,
+                    "model_type": "chat",
+                    "is_tools": true
+                },
+                {
+                    "llm_name": "gpt-5.1-chat-latest",
+                    "tags": "LLM,CHAT,400k,IMAGE2TEXT",
+                    "max_tokens": 400000,
+                    "model_type": "chat",
+                    "is_tools": true
+                },
                 {
                     "llm_name": "gpt-5",
                     "tags": "LLM,CHAT,400k,IMAGE2TEXT",
@@ -3218,6 +3232,13 @@
             "status": "1",
             "rank": "990",
             "llm": [
+                {
+                    "llm_name": "claude-opus-4-5-20251101",
+                    "tags": "LLM,CHAT,IMAGE2TEXT,200k",
+                    "max_tokens": 204800,
+                    "model_type": "chat",
+                    "is_tools": true
+                },
                 {
                     "llm_name": "claude-opus-4-1-20250805",
                     "tags": "LLM,CHAT,IMAGE2TEXT,200k",
diff --git a/rag/llm/chat_model.py b/rag/llm/chat_model.py
index cce5b2454..9fbc88348 100644
--- a/rag/llm/chat_model.py
+++ b/rag/llm/chat_model.py
@@ -132,6 +132,11 @@ class Base(ABC):
 
         gen_conf = {k: v for k, v in gen_conf.items() if k in allowed_conf}
 
+        model_name_lower = (self.model_name or "").lower()
+        # gpt-5 and gpt-5.1 endpoints have inconsistent parameter support, clear custom generation params to prevent unexpected issues
+        if "gpt-5" in model_name_lower:
+            gen_conf = {}
+
         return gen_conf
 
     def _chat(self, history, gen_conf, **kwargs):