feat: /v1/messages -> /v1/responses

relay/channel/openai/adaptor.go

@@ -171,7 +171,9 @@ func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
 		url = strings.Replace(url, "{model}", info.UpstreamModelName, -1)
 		return url, nil
 	default:
-		if info.RelayFormat == types.RelayFormatClaude || info.RelayFormat == types.RelayFormatGemini {
+		if (info.RelayFormat == types.RelayFormatClaude || info.RelayFormat == types.RelayFormatGemini) &&
+			info.RelayMode != relayconstant.RelayModeResponses &&
+			info.RelayMode != relayconstant.RelayModeResponsesCompact {
 			return fmt.Sprintf("%s/v1/chat/completions", info.ChannelBaseUrl), nil
 		}
 		return relaycommon.GetFullRequestURL(info.ChannelBaseUrl, info.RequestURLPath, info.ChannelType), nil

relay/channel/openai/chat_via_responses.go

@@ -71,12 +71,22 @@ func OaiResponsesToChatHandler(c *gin.Context, info *relaycommon.RelayInfo, resp
 		chatResp.Usage = *usage
 	}
 
-	chatBody, err := common.Marshal(chatResp)
+	var responseBody []byte
+	switch info.RelayFormat {
+	case types.RelayFormatClaude:
+		claudeResp := service.ResponseOpenAI2Claude(chatResp, info)
+		responseBody, err = common.Marshal(claudeResp)
+	case types.RelayFormatGemini:
+		geminiResp := service.ResponseOpenAI2Gemini(chatResp, info)
+		responseBody, err = common.Marshal(geminiResp)
+	default:
+		responseBody, err = common.Marshal(chatResp)
+	}
 	if err != nil {
 		return nil, types.NewOpenAIError(err, types.ErrorCodeJsonMarshalFailed, http.StatusInternalServerError)
 	}
 
-	service.IOCopyBytesGracefully(c, resp, chatBody)
+	service.IOCopyBytesGracefully(c, resp, responseBody)
 	return usage, nil
 }
 
@@ -108,12 +118,39 @@ func OaiResponsesToChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo
 	toolCallCanonicalIDByItemID := make(map[string]string)
 	//reasoningSummaryTextByKey := make(map[string]string)
 
+	if info.RelayFormat == types.RelayFormatClaude && info.ClaudeConvertInfo == nil {
+		info.ClaudeConvertInfo = &relaycommon.ClaudeConvertInfo{LastMessagesType: relaycommon.LastMessageTypeNone}
+	}
+
+	sendChatChunk := func(chunk *dto.ChatCompletionsStreamResponse) bool {
+		if chunk == nil {
+			return true
+		}
+		if info.RelayFormat == types.RelayFormatOpenAI {
+			if err := helper.ObjectData(c, chunk); err != nil {
+				streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+				return false
+			}
+			return true
+		}
+
+		chunkData, err := common.Marshal(chunk)
+		if err != nil {
+			streamErr = types.NewOpenAIError(err, types.ErrorCodeJsonMarshalFailed, http.StatusInternalServerError)
+			return false
+		}
+		if err := HandleStreamFormat(c, info, string(chunkData), false, false); err != nil {
+			streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+			return false
+		}
+		return true
+	}
+
 	sendStartIfNeeded := func() bool {
 		if sentStart {
 			return true
 		}
-		if err := helper.ObjectData(c, helper.GenerateStartEmptyResponse(responseId, createAt, model, nil)); err != nil {
-			streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+		if !sendChatChunk(helper.GenerateStartEmptyResponse(responseId, createAt, model, nil)) {
 			return false
 		}
 		sentStart = true
@@ -173,8 +210,7 @@ func OaiResponsesToChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo
 				},
 			},
 		}
-		if err := helper.ObjectData(c, chunk); err != nil {
-			streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+		if !sendChatChunk(chunk) {
 			return false
 		}
 		return true
@@ -231,8 +267,7 @@ func OaiResponsesToChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo
 				},
 			},
 		}
-		if err := helper.ObjectData(c, chunk); err != nil {
-			streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+		if !sendChatChunk(chunk) {
 			return false
 		}
 		sawToolCall = true
@@ -323,8 +358,7 @@ func OaiResponsesToChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo
 						},
 					},
 				}
-				if err := helper.ObjectData(c, chunk); err != nil {
-					streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+				if !sendChatChunk(chunk) {
 					return false
 				}
 			}
@@ -419,13 +453,15 @@ func OaiResponsesToChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo
 				return false
 			}
 			if !sentStop {
+				if info.RelayFormat == types.RelayFormatClaude && info.ClaudeConvertInfo != nil {
+					info.ClaudeConvertInfo.Usage = usage
+				}
 				finishReason := "stop"
 				if sawToolCall && outputText.Len() == 0 {
 					finishReason = "tool_calls"
 				}
 				stop := helper.GenerateStopResponse(responseId, createAt, model, finishReason)
-				if err := helper.ObjectData(c, stop); err != nil {
-					streamErr = types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+				if !sendChatChunk(stop) {
 					return false
 				}
 				sentStop = true
@@ -456,26 +492,31 @@ func OaiResponsesToChatStreamHandler(c *gin.Context, info *relaycommon.RelayInfo
 	}
 
 	if !sentStart {
-		if err := helper.ObjectData(c, helper.GenerateStartEmptyResponse(responseId, createAt, model, nil)); err != nil {
-			return nil, types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+		if !sendChatChunk(helper.GenerateStartEmptyResponse(responseId, createAt, model, nil)) {
+			return nil, streamErr
 		}
 	}
 	if !sentStop {
+		if info.RelayFormat == types.RelayFormatClaude && info.ClaudeConvertInfo != nil {
+			info.ClaudeConvertInfo.Usage = usage
+		}
 		finishReason := "stop"
 		if sawToolCall && outputText.Len() == 0 {
 			finishReason = "tool_calls"
 		}
 		stop := helper.GenerateStopResponse(responseId, createAt, model, finishReason)
-		if err := helper.ObjectData(c, stop); err != nil {
-			return nil, types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
+		if !sendChatChunk(stop) {
+			return nil, streamErr
 		}
 	}
-	if info.ShouldIncludeUsage && usage != nil {
+	if info.RelayFormat == types.RelayFormatOpenAI && info.ShouldIncludeUsage && usage != nil {
 		if err := helper.ObjectData(c, helper.GenerateFinalUsageResponse(responseId, createAt, model, *usage)); err != nil {
 			return nil, types.NewOpenAIError(err, types.ErrorCodeBadResponse, http.StatusInternalServerError)
 		}
 	}
 
-	helper.Done(c)
+	if info.RelayFormat == types.RelayFormatOpenAI {
+		helper.Done(c)
+	}
 	return usage, nil
 }

relay/claude_handler.go

@@ -98,6 +98,23 @@ func ClaudeHelper(c *gin.Context, info *relaycommon.RelayInfo) (newAPIError *typ
 		}
 	}
 
+	if !model_setting.GetGlobalSettings().PassThroughRequestEnabled &&
+		!info.ChannelSetting.PassThroughBodyEnabled &&
+		service.ShouldChatCompletionsUseResponsesGlobal(info.ChannelId, info.ChannelType, info.OriginModelName) {
+		openAIRequest, convErr := service.ClaudeToOpenAIRequest(*request, info)
+		if convErr != nil {
+			return types.NewError(convErr, types.ErrorCodeConvertRequestFailed, types.ErrOptionWithSkipRetry())
+		}
+
+		usage, newApiErr := chatCompletionsViaResponses(c, info, adaptor, openAIRequest)
+		if newApiErr != nil {
+			return newApiErr
+		}
+
+		service.PostClaudeConsumeQuota(c, info, usage)
+		return nil
+	}
+
 	var requestBody io.Reader
 	if model_setting.GetGlobalSettings().PassThroughRequestEnabled || info.ChannelSetting.PassThroughBodyEnabled {
 		body, err := common.GetRequestBody(c)