feat(openai): enhance reasoning model detection logic

CHANGELOG_EXTRA.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.8.10.2] - 2026.03.18
+
+### Added
+
+- 增加对 gpt-5.4-mini 的适配
+
 ## [0.8.10.1] - 2026.03.09
 
 ### Changed

backend/open_webui/routers/openai.py

@@ -801,7 +801,10 @@ def is_openai_reasoning_model(model: str) -> bool:
     real_model_name = (model.lower().split("/", 1)[-1]).split(".", 1)[-1]
 
     # check for reasoning models
-    return real_model_name.startswith(("o1", "o3", "o4", "gpt-5"))
+    reasoning_models_prefixes = ("o1", "o3", "o4", "gpt-5")
+    return real_model_name.startswith(reasoning_models_prefixes) or model.startswith(
+        reasoning_models_prefixes
+    )
 
 
 def convert_to_azure_payload(url, payload: dict, api_version: str):

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "open-webui",
-	"version": "0.8.10.1",
+	"version": "0.8.10.2",
 	"private": true,
 	"scripts": {
 		"dev": "npm run pyodide:fetch && vite dev --host",