From c6125eccb1aacb356bda8222205d37354da0635d Mon Sep 17 00:00:00 2001
From: HynoR <20227709+HynoR@users.noreply.github.com>
Date: Sat, 15 Nov 2025 13:24:00 +0800
Subject: [PATCH] fix: Set default to unsupported value for gpt-5 model series
 requests

---
 relay/channel/openai/adaptor.go | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/relay/channel/openai/adaptor.go b/relay/channel/openai/adaptor.go
index 55bd1402c..035288978 100644
--- a/relay/channel/openai/adaptor.go
+++ b/relay/channel/openai/adaptor.go
@@ -306,10 +306,11 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 			request.Temperature = nil
 		}
 
+		// gpt-5系列模型适配 归零不再支持的参数
 		if strings.HasPrefix(info.UpstreamModelName, "gpt-5") {
-			if info.UpstreamModelName != "gpt-5-chat-latest" {
-				request.Temperature = nil
-			}
+			request.Temperature = nil
+			request.TopP = 0 // oai 的 top_p 默认值是 1.0，但是为了 omitempty 属性直接不传，这里显式设置为 0
+			request.LogProbs = false
 		}
 
 		// 转换模型推理力度后缀