diff --git a/dto/openai_response.go b/dto/openai_response.go
index 7959f07..a494a7f 100644
--- a/dto/openai_response.go
+++ b/dto/openai_response.go
@@ -358,8 +358,10 @@ type ResponsesOutputContent struct {
 }
 
 type ResponsesReasoningSummaryPart struct {
-	Type string `json:"type"`
-	Text string `json:"text"`
+	Type        string        `json:"type"`
+	Text        string        `json:"text"`
+	Annotations []interface{} `json:"annotations,omitempty"`
+	Logprobs    []interface{} `json:"logprobs,omitempty"`
 }
 
 const (
@@ -387,6 +389,8 @@ type ResponsesStreamResponse struct {
 	Type     string                   `json:"type"`
 	Response *OpenAIResponsesResponse `json:"response,omitempty"`
 	Delta    string                   `json:"delta,omitempty"`
+	Text     string                   `json:"text,omitempty"`
+	Logprobs []interface{}            `json:"logprobs,omitempty"`
 	Item     *ResponsesOutput         `json:"item,omitempty"`
 	// - response.function_call_arguments.delta
 	// - response.function_call_arguments.done
diff --git a/relay/channel/gemini/adaptor.go b/relay/channel/gemini/adaptor.go
index e0ab48e..1846cde 100644
--- a/relay/channel/gemini/adaptor.go
+++ b/relay/channel/gemini/adaptor.go
@@ -133,6 +133,7 @@ func (a *Adaptor) Init(info *relaycommon.RelayInfo) {
 func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
 
 	if model_setting.GetGeminiSettings().ThinkingAdapterEnabled &&
+		info.OriginModelName != "gpt-5.6-luna" &&
 		!model_setting.ShouldPreserveThinkingSuffix(info.OriginModelName) {
 		// 新增逻辑：处理 -thinking-<budget> 格式
 		if strings.Contains(info.UpstreamModelName, "-thinking-") {
diff --git a/relay/channel/gemini/codex_luna_model_test.go b/relay/channel/gemini/codex_luna_model_test.go
new file mode 100644
index 0000000..cd731ad
--- /dev/null
+++ b/relay/channel/gemini/codex_luna_model_test.go
@@ -0,0 +1,44 @@
+package gemini
+
+import (
+	"testing"
+
+	relaycommon "github.com/QuantumNous/new-api/relay/common"
+	"github.com/QuantumNous/new-api/setting/model_setting"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetRequestURLPreservesCodexLunaHighModel(t *testing.T) {
+	settings := model_setting.GetGeminiSettings()
+	originalThinkingAdapterEnabled := settings.ThinkingAdapterEnabled
+	settings.ThinkingAdapterEnabled = true
+	t.Cleanup(func() {
+		settings.ThinkingAdapterEnabled = originalThinkingAdapterEnabled
+	})
+
+	adaptor := &Adaptor{}
+	info := &relaycommon.RelayInfo{
+		OriginModelName: "gpt-5.6-luna",
+		ChannelMeta: &relaycommon.ChannelMeta{
+			UpstreamModelName: "gemini-3.7-flash-high",
+			ChannelBaseUrl:    "https://example.test",
+		},
+	}
+
+	url, err := adaptor.GetRequestURL(info)
+	require.NoError(t, err)
+	require.Equal(t, "https://example.test/v1beta/models/gemini-3.7-flash-high:generateContent", url)
+	require.Equal(t, "gemini-3.7-flash-high", info.UpstreamModelName)
+
+	ordinaryInfo := &relaycommon.RelayInfo{
+		OriginModelName: "gemini-3.7-flash-high",
+		ChannelMeta: &relaycommon.ChannelMeta{
+			UpstreamModelName: "gemini-3.7-flash-high",
+			ChannelBaseUrl:    "https://example.test",
+		},
+	}
+	ordinaryURL, err := adaptor.GetRequestURL(ordinaryInfo)
+	require.NoError(t, err)
+	require.Equal(t, "https://example.test/v1beta/models/gemini-3.7-flash:generateContent", ordinaryURL)
+	require.Equal(t, "gemini-3.7-flash", ordinaryInfo.UpstreamModelName)
+}
diff --git a/relay/channel/openai/adaptor.go b/relay/channel/openai/adaptor.go
index 3fd2466..bd52825 100644
--- a/relay/channel/openai/adaptor.go
+++ b/relay/channel/openai/adaptor.go
@@ -602,6 +602,16 @@ func detectImageMimeType(filename string) string {
 }
 
 func (a *Adaptor) ConvertOpenAIResponsesRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.OpenAIResponsesRequest) (any, error) {
+	if request.Model == codexLunaUpstreamModel ||
+		(info != nil && info.OriginModelName == codexLunaOriginModel) {
+		request.Model = codexLunaUpstreamModel
+		request.Reasoning = nil
+		if info != nil {
+			info.ReasoningEffort = ""
+		}
+		return request, nil
+	}
+
 	//  转换模型推理力度后缀
 	effort, originModel := reasoning.ParseOpenAIReasoningEffortFromModelSuffix(request.Model)
 	if effort != "" {
diff --git a/relay/channel/openai/adaptor_responses_luna_test.go b/relay/channel/openai/adaptor_responses_luna_test.go
new file mode 100644
index 0000000..2d79925
--- /dev/null
+++ b/relay/channel/openai/adaptor_responses_luna_test.go
@@ -0,0 +1,44 @@
+package openai
+
+import (
+	"testing"
+
+	"github.com/QuantumNous/new-api/dto"
+	relaycommon "github.com/QuantumNous/new-api/relay/common"
+	"github.com/stretchr/testify/require"
+)
+
+func TestConvertOpenAIResponsesRequestPreservesExactGeminiHighModel(t *testing.T) {
+	info := &relaycommon.RelayInfo{
+		OriginModelName: "gemini-3.7-flash-high",
+		ReasoningEffort: "low",
+	}
+	request := dto.OpenAIResponsesRequest{
+		Model: codexLunaUpstreamModel,
+		Reasoning: &dto.Reasoning{
+			Effort:  "low",
+			Summary: "detailed",
+		},
+	}
+
+	converted, err := (&Adaptor{}).ConvertOpenAIResponsesRequest(nil, info, request)
+	require.NoError(t, err)
+	actual, ok := converted.(dto.OpenAIResponsesRequest)
+	require.True(t, ok)
+	require.Equal(t, codexLunaUpstreamModel, actual.Model)
+	require.Nil(t, actual.Reasoning)
+	require.Empty(t, info.ReasoningEffort)
+}
+
+func TestConvertOpenAIResponsesRequestStillParsesOtherEffortSuffixes(t *testing.T) {
+	info := &relaycommon.RelayInfo{OriginModelName: "gemini-3.7-flash-low"}
+	request := dto.OpenAIResponsesRequest{Model: "gemini-3.7-flash-low"}
+
+	converted, err := (&Adaptor{}).ConvertOpenAIResponsesRequest(nil, info, request)
+	require.NoError(t, err)
+	actual, ok := converted.(dto.OpenAIResponsesRequest)
+	require.True(t, ok)
+	require.Equal(t, "gemini-3.7-flash", actual.Model)
+	require.NotNil(t, actual.Reasoning)
+	require.Equal(t, "low", actual.Reasoning.Effort)
+}
diff --git a/relay/channel/openai/relay_responses.go b/relay/channel/openai/relay_responses.go
index 697cc96..299247f 100644
--- a/relay/channel/openai/relay_responses.go
+++ b/relay/channel/openai/relay_responses.go
@@ -84,6 +84,10 @@ func OaiResponsesStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp
 	var responseTextBuilder strings.Builder
 	imageCounter := &relaycommon.ImageGenerationCallCounter{}
 	imageCommitted := false
+	var codexCompat *codexResponsesStreamState
+	if info.OriginModelName == codexLunaOriginModel {
+		codexCompat = newCodexResponsesStreamState()
+	}
 
 	helper.StreamScannerHandler(c, resp, info, func(data string, sr *helper.StreamResult) {
 
@@ -94,7 +98,34 @@ func OaiResponsesStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp
 			sr.Error(err)
 			return
 		}
-		sendResponsesStreamData(c, streamResponse, data)
+		if codexCompat != nil {
+			before, normalized, after, err := codexCompat.normalize(&streamResponse, data)
+			if err != nil {
+				logger.LogError(c, "failed to normalize Codex responses stream: "+err.Error())
+				sr.Error(err)
+				return
+			}
+			for _, injected := range before {
+				injectedData, err := marshalCodexStreamEvent(injected)
+				if err != nil {
+					sr.Error(err)
+					return
+				}
+				sendResponsesStreamData(c, injected, injectedData)
+			}
+			data = normalized
+			sendResponsesStreamData(c, streamResponse, data)
+			for _, injected := range after {
+				injectedData, err := marshalCodexStreamEvent(injected)
+				if err != nil {
+					sr.Error(err)
+					return
+				}
+				sendResponsesStreamData(c, injected, injectedData)
+			}
+		} else {
+			sendResponsesStreamData(c, streamResponse, data)
+		}
 		switch streamResponse.Type {
 		case "response.completed", "response.done":
 			if streamResponse.Response != nil {
diff --git a/relay/channel/openai/responses_codex_compat.go b/relay/channel/openai/responses_codex_compat.go
new file mode 100644
index 0000000..c7df595
--- /dev/null
+++ b/relay/channel/openai/responses_codex_compat.go
@@ -0,0 +1,254 @@
+package openai
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/dto"
+	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
+)
+
+const (
+	codexLunaOriginModel   = "gpt-5.6-luna"
+	codexLunaUpstreamModel = "gemini-3.7-flash-high"
+)
+
+type codexResponsesStreamState struct {
+	nextOutputIndex  int
+	outputIndexByID  map[string]int
+	contentStartedBy map[string]bool
+	contentDoneBy    map[string]bool
+	textByID         map[string]*strings.Builder
+	lastMessageID    string
+}
+
+func newCodexResponsesStreamState() *codexResponsesStreamState {
+	return &codexResponsesStreamState{
+		outputIndexByID:  make(map[string]int),
+		contentStartedBy: make(map[string]bool),
+		contentDoneBy:    make(map[string]bool),
+		textByID:         make(map[string]*strings.Builder),
+	}
+}
+
+func (s *codexResponsesStreamState) normalize(
+	event *dto.ResponsesStreamResponse,
+	data string,
+) (before []dto.ResponsesStreamResponse, normalized string, after []dto.ResponsesStreamResponse, err error) {
+	if s == nil || event == nil || data == "" {
+		return nil, data, nil, nil
+	}
+	if event.Response != nil {
+		event.Response.Model = codexLunaUpstreamModel
+		data, err = sjson.Set(data, "response.model", codexLunaUpstreamModel)
+		if err != nil {
+			return nil, "", nil, fmt.Errorf("set responses model: %w", err)
+		}
+	}
+
+	itemID := event.ItemID
+	if itemID == "" && event.Item != nil {
+		itemID = event.Item.ID
+	}
+
+	outputIndex := event.OutputIndex
+	if event.Type == dto.ResponsesOutputTypeItemAdded && itemID != "" {
+		if outputIndex == nil {
+			idx := s.nextOutputIndex
+			s.nextOutputIndex++
+			outputIndex = codexIntPtr(idx)
+		} else if *outputIndex >= s.nextOutputIndex {
+			s.nextOutputIndex = *outputIndex + 1
+		}
+		s.outputIndexByID[itemID] = *outputIndex
+		if event.Item != nil && event.Item.Type == "message" {
+			s.lastMessageID = itemID
+		}
+	}
+	if outputIndex == nil && itemID != "" {
+		if idx, ok := s.outputIndexByID[itemID]; ok {
+			outputIndex = codexIntPtr(idx)
+		}
+	}
+	if outputIndex != nil && event.OutputIndex == nil {
+		event.OutputIndex = outputIndex
+		data, err = sjson.Set(data, "output_index", *outputIndex)
+		if err != nil {
+			return nil, "", nil, fmt.Errorf("set responses output_index: %w", err)
+		}
+	}
+
+	if event.Type == dto.ResponsesOutputTypeItemAdded && event.Item != nil && event.Item.Type == "message" {
+		if !gjson.Get(data, "item.content").Exists() {
+			data, err = sjson.SetRaw(data, "item.content", "[]")
+			if err != nil {
+				return nil, "", nil, fmt.Errorf("set responses message content: %w", err)
+			}
+		}
+	}
+
+	switch event.Type {
+	case "response.content_part.added":
+		s.contentStartedBy[itemID] = true
+	case "response.content_part.done":
+		s.contentDoneBy[itemID] = true
+	case "response.output_text.delta":
+		data, err = ensureCodexContentIndex(event, data)
+		if err != nil {
+			return nil, "", nil, err
+		}
+		if !s.contentStartedBy[itemID] {
+			before = append(before, codexContentPartEvent("response.content_part.added", itemID, outputIndex, ""))
+			s.contentStartedBy[itemID] = true
+		}
+		builder := s.textByID[itemID]
+		if builder == nil {
+			builder = &strings.Builder{}
+			s.textByID[itemID] = builder
+		}
+		builder.WriteString(event.Delta)
+	case "response.output_text.done":
+		data, err = ensureCodexContentIndex(event, data)
+		if err != nil {
+			return nil, "", nil, err
+		}
+		if !s.contentStartedBy[itemID] {
+			before = append(before, codexContentPartEvent("response.content_part.added", itemID, outputIndex, ""))
+			s.contentStartedBy[itemID] = true
+		}
+		text := gjson.Get(data, "text").String()
+		if builder := s.textByID[itemID]; builder != nil && text == "" {
+			text = builder.String()
+			data, err = sjson.Set(data, "text", text)
+			if err != nil {
+				return nil, "", nil, fmt.Errorf("set responses output text: %w", err)
+			}
+		}
+		if !s.contentDoneBy[itemID] {
+			after = append(after, codexContentPartEvent("response.content_part.done", itemID, outputIndex, text))
+			s.contentDoneBy[itemID] = true
+		}
+	case dto.ResponsesOutputTypeItemDone:
+		if s.contentStartedBy[itemID] && !s.contentDoneBy[itemID] {
+			text := ""
+			if builder := s.textByID[itemID]; builder != nil {
+				text = builder.String()
+			}
+			before = append(before, codexContentPartEvent("response.content_part.done", itemID, outputIndex, text))
+			s.contentDoneBy[itemID] = true
+		}
+		if event.Item != nil && event.Item.Type == "message" {
+			text := ""
+			if builder := s.textByID[itemID]; builder != nil {
+				text = builder.String()
+			}
+			data, err = ensureCodexMessageOutputItem(data, text)
+			if err != nil {
+				return nil, "", nil, err
+			}
+		}
+	case "response.completed", "response.done":
+		if event.Response != nil && len(event.Response.Output) == 0 {
+			if itemID == "" {
+				itemID = s.lastMessageID
+			}
+			if itemID == "" {
+				break
+			}
+			text := ""
+			if builder := s.textByID[itemID]; builder != nil {
+				text = builder.String()
+			}
+			data, err = ensureCodexCompletedOutput(data, itemID, text)
+			if err != nil {
+				return nil, "", nil, err
+			}
+		}
+	}
+
+	return before, data, after, nil
+}
+
+func ensureCodexContentIndex(event *dto.ResponsesStreamResponse, data string) (string, error) {
+	if event.ContentIndex != nil {
+		return data, nil
+	}
+	event.ContentIndex = codexIntPtr(0)
+	updated, err := sjson.Set(data, "content_index", 0)
+	if err != nil {
+		return "", fmt.Errorf("set responses content_index: %w", err)
+	}
+	return updated, nil
+}
+
+func ensureCodexMessageOutputItem(data, text string) (string, error) {
+	if gjson.Get(data, "item.content").Exists() && gjson.Get(data, "item.content").IsArray() && len(gjson.Get(data, "item.content").Array()) > 0 {
+		return data, nil
+	}
+	data, err := sjson.Set(data, "item.role", "assistant")
+	if err != nil {
+		return "", fmt.Errorf("set responses output item role: %w", err)
+	}
+	content := []dto.ResponsesOutputContent{{Type: "output_text", Text: text, Annotations: []interface{}{}}}
+	contentData, err := common.Marshal(content)
+	if err != nil {
+		return "", fmt.Errorf("marshal responses output item content: %w", err)
+	}
+	data, err = sjson.SetRaw(data, "item.content", string(contentData))
+	if err != nil {
+		return "", fmt.Errorf("set responses output item content: %w", err)
+	}
+	return data, nil
+}
+
+func ensureCodexCompletedOutput(data, itemID, text string) (string, error) {
+	output := []dto.ResponsesOutput{{
+		Type:   "message",
+		ID:     itemID,
+		Status: "completed",
+		Role:   "assistant",
+		Content: []dto.ResponsesOutputContent{{
+			Type:        "output_text",
+			Text:        text,
+			Annotations: []interface{}{},
+		}},
+	}}
+	outputData, err := common.Marshal(output)
+	if err != nil {
+		return "", fmt.Errorf("marshal responses output: %w", err)
+	}
+	updated, err := sjson.SetRaw(data, "response.output", string(outputData))
+	if err != nil {
+		return "", fmt.Errorf("set responses output: %w", err)
+	}
+	return updated, nil
+}
+
+func codexContentPartEvent(eventType, itemID string, outputIndex *int, text string) dto.ResponsesStreamResponse {
+	return dto.ResponsesStreamResponse{
+		Type:         eventType,
+		OutputIndex:  outputIndex,
+		ContentIndex: codexIntPtr(0),
+		ItemID:       itemID,
+		Part: &dto.ResponsesReasoningSummaryPart{
+			Type:        "output_text",
+			Text:        text,
+			Annotations: []interface{}{},
+			Logprobs:    []interface{}{},
+		},
+	}
+}
+
+func marshalCodexStreamEvent(event dto.ResponsesStreamResponse) (string, error) {
+	data, err := common.Marshal(event)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func codexIntPtr(value int) *int {
+	return &value
+}
diff --git a/relay/channel/openai/responses_codex_compat_test.go b/relay/channel/openai/responses_codex_compat_test.go
new file mode 100644
index 0000000..5944b97
--- /dev/null
+++ b/relay/channel/openai/responses_codex_compat_test.go
@@ -0,0 +1,90 @@
+package openai
+
+import (
+	"testing"
+
+	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/dto"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/tidwall/gjson"
+)
+
+func TestCodexResponsesStreamStateAddsIndexesAndContentPartEvents(t *testing.T) {
+	state := newCodexResponsesStreamState()
+
+	added := dto.ResponsesStreamResponse{
+		Type: "response.output_item.added",
+		Item: &dto.ResponsesOutput{ID: "item_1", Type: "message", Role: "assistant", Status: "in_progress"},
+	}
+	before, addedData, after, err := state.normalize(&added, `{"type":"response.output_item.added","item":{"id":"item_1","type":"message","role":"assistant","status":"in_progress"},"sequence_number":1}`)
+	require.NoError(t, err)
+	assert.Empty(t, before)
+	assert.Empty(t, after)
+	assert.Equal(t, int64(0), gjson.Get(addedData, "output_index").Int())
+	assert.True(t, gjson.Get(addedData, "item.content").IsArray())
+	assert.Equal(t, int64(1), gjson.Get(addedData, "sequence_number").Int())
+
+	delta := dto.ResponsesStreamResponse{Type: "response.output_text.delta", ItemID: "item_1", Delta: "OK"}
+	before, deltaData, after, err := state.normalize(&delta, `{"type":"response.output_text.delta","item_id":"item_1","delta":"OK","sequence_number":2}`)
+	require.NoError(t, err)
+	require.Len(t, before, 1)
+	assert.Equal(t, "response.content_part.added", before[0].Type)
+	assert.Empty(t, after)
+	assert.Equal(t, int64(0), gjson.Get(deltaData, "output_index").Int())
+	assert.Equal(t, int64(0), gjson.Get(deltaData, "content_index").Int())
+
+	done := dto.ResponsesStreamResponse{Type: "response.output_text.done", ItemID: "item_1"}
+	before, doneData, after, err := state.normalize(&done, `{"type":"response.output_text.done","item_id":"item_1","sequence_number":3}`)
+	require.NoError(t, err)
+	assert.Empty(t, before)
+	require.Len(t, after, 1)
+	assert.Equal(t, "response.content_part.done", after[0].Type)
+	assert.Equal(t, "OK", after[0].Part.Text)
+	assert.Equal(t, "OK", gjson.Get(doneData, "text").String())
+}
+
+func TestMarshalCodexStreamEventIncludesContentPartPayload(t *testing.T) {
+	data, err := marshalCodexStreamEvent(codexContentPartEvent("response.content_part.added", "item_1", codexIntPtr(0), ""))
+	require.NoError(t, err)
+
+	var event dto.ResponsesStreamResponse
+	require.NoError(t, common.Unmarshal([]byte(data), &event))
+	assert.Equal(t, "response.content_part.added", event.Type)
+	assert.Equal(t, "output_text", event.Part.Type)
+	assert.Equal(t, 0, *event.OutputIndex)
+	assert.Equal(t, 0, *event.ContentIndex)
+}
+
+func TestCodexResponsesStreamStateCompletesMessageOutput(t *testing.T) {
+	state := newCodexResponsesStreamState()
+
+	added := dto.ResponsesStreamResponse{
+		Type: "response.output_item.added",
+		Item: &dto.ResponsesOutput{ID: "item_1", Type: "message", Role: "assistant"},
+	}
+	_, _, _, err := state.normalize(&added, `{"type":"response.output_item.added","item":{"id":"item_1","type":"message"}}`)
+	require.NoError(t, err)
+
+	delta := dto.ResponsesStreamResponse{Type: "response.output_text.delta", ItemID: "item_1", Delta: "OK"}
+	_, _, _, err = state.normalize(&delta, `{"type":"response.output_text.delta","item_id":"item_1","delta":"OK"}`)
+	require.NoError(t, err)
+
+	done := dto.ResponsesStreamResponse{
+		Type:   dto.ResponsesOutputTypeItemDone,
+		ItemID: "item_1",
+		Item:   &dto.ResponsesOutput{ID: "item_1", Type: "message", Status: "completed"},
+	}
+	_, doneData, _, err := state.normalize(&done, `{"type":"response.output_item.done","item_id":"item_1","item":{"id":"item_1","type":"message","status":"completed"}}`)
+	require.NoError(t, err)
+	assert.Equal(t, "OK", gjson.Get(doneData, "item.content.0.text").String())
+
+	completed := dto.ResponsesStreamResponse{
+		Type:     "response.completed",
+		Response: &dto.OpenAIResponsesResponse{Model: "gemini-3.7-flash", Output: []dto.ResponsesOutput{}},
+	}
+	_, completedData, _, err := state.normalize(&completed, `{"type":"response.completed","response":{"model":"gemini-3.7-flash","output":[]}}`)
+	require.NoError(t, err)
+	assert.Equal(t, codexLunaUpstreamModel, gjson.Get(completedData, "response.model").String())
+	assert.Equal(t, "OK", gjson.Get(completedData, "response.output.0.content.0.text").String())
+}
diff --git a/relay/responses_handler.go b/relay/responses_handler.go
index 5fa23d0..9c74145 100644
--- a/relay/responses_handler.go
+++ b/relay/responses_handler.go
@@ -20,6 +20,25 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
+const (
+	codexLunaModel         = "gpt-5.6-luna"
+	codexLunaUpstreamModel = "gemini-3.7-flash-high"
+)
+
+func applyCodexLunaCompatibility(info *relaycommon.RelayInfo, request *dto.OpenAIResponsesRequest) {
+	if info == nil || request == nil || info.OriginModelName != codexLunaModel {
+		return
+	}
+
+	// Luna is a stable Codex-facing alias for an upstream model whose name
+	// already selects the desired thinking level. Do not reinterpret Codex's
+	// reasoning fields or strip the upstream model's -high suffix.
+	info.UpstreamModelName = codexLunaUpstreamModel
+	info.ReasoningEffort = ""
+	request.Model = codexLunaUpstreamModel
+	request.Reasoning = nil
+}
+
 func ResponsesHelper(c *gin.Context, info *relaycommon.RelayInfo) (newAPIError *types.NewAPIError) {
 	info.InitChannelMeta(c)
 	if info.RelayMode == relayconstant.RelayModeResponsesCompact {
@@ -74,6 +93,7 @@ func ResponsesHelper(c *gin.Context, info *relaycommon.RelayInfo) (newAPIError *
 	if err != nil {
 		return types.NewError(err, types.ErrorCodeChannelModelMappedError, types.ErrOptionWithSkipRetry())
 	}
+	applyCodexLunaCompatibility(info, request)
 
 	adaptor := GetAdaptor(info.ApiType)
 	if adaptor == nil {
diff --git a/relay/responses_luna_compat_test.go b/relay/responses_luna_compat_test.go
new file mode 100644
index 0000000..a6f4185
--- /dev/null
+++ b/relay/responses_luna_compat_test.go
@@ -0,0 +1,52 @@
+package relay
+
+import (
+	"testing"
+
+	"github.com/QuantumNous/new-api/dto"
+	relaycommon "github.com/QuantumNous/new-api/relay/common"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestApplyCodexLunaCompatibilityPinsUpstreamAndIgnoresReasoning(t *testing.T) {
+	info := &relaycommon.RelayInfo{
+		OriginModelName: codexLunaModel,
+		ChannelMeta: &relaycommon.ChannelMeta{
+			UpstreamModelName: "gemini-3.7-flash-low",
+		},
+		ReasoningEffort: "max",
+	}
+	request := &dto.OpenAIResponsesRequest{
+		Model: "gemini-3.7-flash-low",
+		Reasoning: &dto.Reasoning{
+			Effort:  "max",
+			Summary: "auto",
+		},
+	}
+
+	applyCodexLunaCompatibility(info, request)
+
+	assert.Equal(t, codexLunaUpstreamModel, info.UpstreamModelName)
+	assert.Empty(t, info.ReasoningEffort)
+	assert.Equal(t, codexLunaUpstreamModel, request.Model)
+	require.Nil(t, request.Reasoning)
+}
+
+func TestApplyCodexLunaCompatibilityDoesNotAffectOtherModels(t *testing.T) {
+	reasoning := &dto.Reasoning{Effort: "high", Summary: "auto"}
+	info := &relaycommon.RelayInfo{
+		OriginModelName: "gpt-5.6-sol",
+		ChannelMeta: &relaycommon.ChannelMeta{
+			UpstreamModelName: "gpt-5.6-sol",
+		},
+		ReasoningEffort: "high",
+	}
+	request := &dto.OpenAIResponsesRequest{Model: "gpt-5.6-sol", Reasoning: reasoning}
+
+	applyCodexLunaCompatibility(info, request)
+
+	assert.Equal(t, "gpt-5.6-sol", info.UpstreamModelName)
+	assert.Equal(t, "high", info.ReasoningEffort)
+	assert.Same(t, reasoning, request.Reasoning)
+}
diff --git a/service/relayconvert/internal/oai_chat/to_oai_responses_resp.go b/service/relayconvert/internal/oai_chat/to_oai_responses_resp.go
index b3a15ad..31002b3 100644
--- a/service/relayconvert/internal/oai_chat/to_oai_responses_resp.go
+++ b/service/relayconvert/internal/oai_chat/to_oai_responses_resp.go
@@ -17,6 +17,8 @@ const (
 	responsesEventCreated                  = "response.created"
 	responsesEventCompleted                = "response.completed"
 	responsesEventIncomplete               = "response.incomplete"
+	responsesEventContentPartAdded         = "response.content_part.added"
+	responsesEventContentPartDone          = "response.content_part.done"
 	responsesEventOutputTextDelta          = "response.output_text.delta"
 	responsesEventOutputItemAdded          = "response.output_item.added"
 	responsesEventOutputItemDone           = "response.output_item.done"
diff --git a/service/relayconvert/internal/oai_chat/to_oai_responses_resp_test.go b/service/relayconvert/internal/oai_chat/to_oai_responses_resp_test.go
index a5034a0..6872def 100644
--- a/service/relayconvert/internal/oai_chat/to_oai_responses_resp_test.go
+++ b/service/relayconvert/internal/oai_chat/to_oai_responses_resp_test.go
@@ -118,18 +118,23 @@ func TestChatCompletionsStreamToResponsesEventsAggregatesUsageAndToolArgs(t *tes
 	})...)
 	events = append(events, FinalizeChatCompletionsStreamToResponses(state)...)
 
-	require.Len(t, events, 10)
+	require.Len(t, events, 12)
 	assert.Equal(t, responsesEventCreated, events[0].Type)
-	assert.Equal(t, responsesEventOutputTextDelta, events[2].Type)
-	assert.Equal(t, "hello", events[2].Payload.Delta)
-	assert.Equal(t, responsesEventFunctionArgsDelta, events[4].Type)
-	assert.Equal(t, `{"q":"x"}`, events[4].Payload.Delta)
-	assert.Equal(t, responsesEventCompleted, events[9].Type)
-	require.NotNil(t, events[9].Payload.Response)
-	assert.Equal(t, 6, events[9].Payload.Response.Usage.TotalTokens)
-	require.Len(t, events[9].Payload.Response.Output, 2)
-	assert.Equal(t, "hello", events[9].Payload.Response.Output[0].Content[0].Text)
-	assert.Equal(t, `"{\"q\":\"x\"}"`, string(events[9].Payload.Response.Output[1].Arguments))
+	assert.Equal(t, responsesEventOutputItemAdded, events[1].Type)
+	assert.Equal(t, responsesEventContentPartAdded, events[2].Type)
+	assert.Equal(t, responsesEventOutputTextDelta, events[3].Type)
+	assert.Equal(t, "hello", events[3].Payload.Delta)
+	assert.Equal(t, responsesEventFunctionArgsDelta, events[5].Type)
+	assert.Equal(t, `{"q":"x"}`, events[5].Payload.Delta)
+	assert.Equal(t, "response.output_text.done", events[6].Type)
+	assert.Equal(t, responsesEventContentPartDone, events[7].Type)
+	assert.Equal(t, "hello", events[7].Payload.Part.Text)
+	assert.Equal(t, responsesEventCompleted, events[11].Type)
+	require.NotNil(t, events[11].Payload.Response)
+	assert.Equal(t, 6, events[11].Payload.Response.Usage.TotalTokens)
+	require.Len(t, events[11].Payload.Response.Output, 2)
+	assert.Equal(t, "hello", events[11].Payload.Response.Output[0].Content[0].Text)
+	assert.Equal(t, `"{\"q\":\"x\"}"`, string(events[11].Payload.Response.Output[1].Arguments))
 }
 
 func mustResponsesEventsFromChatChunk(t *testing.T, state *ChatToResponsesStreamState, chunk *dto.ChatCompletionsStreamResponse) []ChatToResponsesStreamEvent {
diff --git a/service/relayconvert/internal/oai_chat/to_oai_responses_stream_resp.go b/service/relayconvert/internal/oai_chat/to_oai_responses_stream_resp.go
index 75c602d..4c3ee45 100644
--- a/service/relayconvert/internal/oai_chat/to_oai_responses_stream_resp.go
+++ b/service/relayconvert/internal/oai_chat/to_oai_responses_stream_resp.go
@@ -152,6 +152,18 @@ func (s *ChatToResponsesStreamState) appendTextDelta(delta string) []ChatToRespo
 				Content: []dto.ResponsesOutputContent{},
 			},
 		}))
+		events = append(events, responsesStreamEvent(responsesEventContentPartAdded, dto.ResponsesStreamResponse{
+			Type:         responsesEventContentPartAdded,
+			OutputIndex:  intPtr(s.textOutputIndex),
+			ContentIndex: intPtr(0),
+			ItemID:       s.messageID(),
+			Part: &dto.ResponsesReasoningSummaryPart{
+				Type:        "output_text",
+				Text:        "",
+				Annotations: []interface{}{},
+				Logprobs:    []interface{}{},
+			},
+		}))
 	}
 	s.text.WriteString(delta)
 	events = append(events, responsesStreamEvent(responsesEventOutputTextDelta, dto.ResponsesStreamResponse{
@@ -251,6 +263,20 @@ func (s *ChatToResponsesStreamState) doneDeltaEvents() []ChatToResponsesStreamEv
 			OutputIndex:  intPtr(s.textOutputIndex),
 			ContentIndex: intPtr(0),
 			ItemID:       s.messageID(),
+			Text:         s.text.String(),
+			Logprobs:     []interface{}{},
+		}))
+		events = append(events, responsesStreamEvent(responsesEventContentPartDone, dto.ResponsesStreamResponse{
+			Type:         responsesEventContentPartDone,
+			OutputIndex:  intPtr(s.textOutputIndex),
+			ContentIndex: intPtr(0),
+			ItemID:       s.messageID(),
+			Part: &dto.ResponsesReasoningSummaryPart{
+				Type:        "output_text",
+				Text:        s.text.String(),
+				Annotations: []interface{}{},
+				Logprobs:    []interface{}{},
+			},
 		}))
 		events = append(events, responsesStreamEvent(responsesEventOutputItemDone, dto.ResponsesStreamResponse{
 			Type:        responsesEventOutputItemDone,