feat: support DeepSeek V4 reasoning suffix handling

relay/channel/deepseek/adaptor.go

@@ -7,12 +7,14 @@ import (
 	"net/http"
 	"strings"
 
+	"github.com/QuantumNous/new-api/common"
 	"github.com/QuantumNous/new-api/dto"
 	"github.com/QuantumNous/new-api/relay/channel"
 	"github.com/QuantumNous/new-api/relay/channel/claude"
 	"github.com/QuantumNous/new-api/relay/channel/openai"
 	relaycommon "github.com/QuantumNous/new-api/relay/common"
 	"github.com/QuantumNous/new-api/relay/constant"
+	"github.com/QuantumNous/new-api/setting/reasoning"
 	"github.com/QuantumNous/new-api/types"
 	"github.com/gin-gonic/gin"
 )
@@ -27,7 +29,18 @@ func (a *Adaptor) ConvertGeminiRequest(*gin.Context, *relaycommon.RelayInfo, *dt
 
 func (a *Adaptor) ConvertClaudeRequest(c *gin.Context, info *relaycommon.RelayInfo, req *dto.ClaudeRequest) (any, error) {
 	adaptor := claude.Adaptor{}
-	return adaptor.ConvertClaudeRequest(c, info, req)
+	convertedRequest, err := adaptor.ConvertClaudeRequest(c, info, req)
+	if err != nil {
+		return nil, err
+	}
+	claudeRequest, ok := convertedRequest.(*dto.ClaudeRequest)
+	if !ok {
+		return convertedRequest, nil
+	}
+	if err := applyDeepSeekV4ClaudeThinkingSuffix(info, claudeRequest); err != nil {
+		return nil, err
+	}
+	return claudeRequest, nil
 }
 
 func (a *Adaptor) ConvertAudioRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.AudioRequest) (io.Reader, error) {
@@ -71,9 +84,71 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
+	if err := applyDeepSeekV4OpenAIThinkingSuffix(info, request); err != nil {
+		return nil, err
+	}
+
 	return request, nil
 }
 
+func applyDeepSeekV4OpenAIThinkingSuffix(info *relaycommon.RelayInfo, request *dto.GeneralOpenAIRequest) error {
+	modelName := request.Model
+	if info != nil && info.ChannelMeta != nil && info.UpstreamModelName != "" {
+		modelName = info.UpstreamModelName
+	}
+	baseModel, thinkingType, effort, ok := reasoning.ParseDeepSeekV4ThinkingSuffix(modelName)
+	if !ok {
+		return nil
+	}
+	thinking, err := common.Marshal(map[string]string{
+		"type": thinkingType,
+	})
+	if err != nil {
+		return fmt.Errorf("error marshalling thinking: %w", err)
+	}
+	request.Model = baseModel
+	request.THINKING = thinking
+	request.ReasoningEffort = effort
+	if info != nil {
+		if info.ChannelMeta != nil {
+			info.UpstreamModelName = baseModel
+		}
+		info.ReasoningEffort = effort
+	}
+	return nil
+}
+
+func applyDeepSeekV4ClaudeThinkingSuffix(info *relaycommon.RelayInfo, request *dto.ClaudeRequest) error {
+	modelName := request.Model
+	if info != nil && info.ChannelMeta != nil && info.UpstreamModelName != "" {
+		modelName = info.UpstreamModelName
+	}
+	baseModel, thinkingType, effort, ok := reasoning.ParseDeepSeekV4ThinkingSuffix(modelName)
+	if !ok {
+		return nil
+	}
+	request.Model = baseModel
+	request.Thinking = &dto.Thinking{Type: thinkingType}
+	if effort == "" {
+		request.OutputConfig = nil
+	} else {
+		outputConfig, err := common.Marshal(map[string]string{
+			"effort": effort,
+		})
+		if err != nil {
+			return fmt.Errorf("error marshalling output_config: %w", err)
+		}
+		request.OutputConfig = outputConfig
+	}
+	if info != nil {
+		if info.ChannelMeta != nil {
+			info.UpstreamModelName = baseModel
+		}
+		info.ReasoningEffort = effort
+	}
+	return nil
+}
+
 func (a *Adaptor) ConvertRerankRequest(c *gin.Context, relayMode int, request dto.RerankRequest) (any, error) {
 	return nil, nil
 }

relay/channel/deepseek/constants.go

@@ -2,6 +2,8 @@ package deepseek
 
 var ModelList = []string{
 	"deepseek-chat", "deepseek-reasoner",
+	"deepseek-v4-flash", "deepseek-v4-flash-none", "deepseek-v4-flash-max",
+	"deepseek-v4-pro", "deepseek-v4-pro-none", "deepseek-v4-pro-max",
 }
 
 var ChannelName = "deepseek"