fix: normalize kimi k2.6 temperature (#5390)

relay/channel/moonshot/adaptor.go

@@ -5,7 +5,9 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"strings"
 
+	"github.com/QuantumNous/new-api/common"
 	channelconstant "github.com/QuantumNous/new-api/constant"
 	"github.com/QuantumNous/new-api/dto"
 	"github.com/QuantumNous/new-api/relay/channel"
@@ -79,9 +81,23 @@ func (a *Adaptor) SetupRequestHeader(c *gin.Context, req *http.Header, info *rel
 }
 
 func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayInfo, request *dto.GeneralOpenAIRequest) (any, error) {
+	if request.Temperature != nil && isTemperatureOneOnlyModel(getUpstreamModelName(info, request.Model)) && *request.Temperature != 1.0 {
+		request.Temperature = common.GetPointer[float64](1.0)
+	}
 	return request, nil
 }
 
+func getUpstreamModelName(info *relaycommon.RelayInfo, fallback string) string {
+	if info != nil && info.ChannelMeta != nil && info.UpstreamModelName != "" {
+		return info.UpstreamModelName
+	}
+	return fallback
+}
+
+func isTemperatureOneOnlyModel(model string) bool {
+	return strings.EqualFold(model, "kimi-k2.6")
+}
+
 func (a *Adaptor) ConvertOpenAIResponsesRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.OpenAIResponsesRequest) (any, error) {
 	// TODO implement me
 	return nil, errors.New("not implemented")