diff --git a/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.go b/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.go
index 6b5233b..9a41572 100644
--- a/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.go
+++ b/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.go
@@ -129,6 +129,55 @@ func (MessageError) EnumDescriptor() ([]byte, []int) {
 	return file_chat_proto_rawDescGZIP(), []int{1}
 }
 
+type CompletionStatus int32
+
+const (
+	CompletionStatus_COMPLETED CompletionStatus = 0
+	CompletionStatus_FAILED    CompletionStatus = 1
+	CompletionStatus_TIMEOUT   CompletionStatus = 2
+)
+
+// Enum value maps for CompletionStatus.
+var (
+	CompletionStatus_name = map[int32]string{
+		0: "COMPLETED",
+		1: "FAILED",
+		2: "TIMEOUT",
+	}
+	CompletionStatus_value = map[string]int32{
+		"COMPLETED": 0,
+		"FAILED":    1,
+		"TIMEOUT":   2,
+	}
+)
+
+func (x CompletionStatus) Enum() *CompletionStatus {
+	p := new(CompletionStatus)
+	*p = x
+	return p
+}
+
+func (x CompletionStatus) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (CompletionStatus) Descriptor() protoreflect.EnumDescriptor {
+	return file_chat_proto_enumTypes[2].Descriptor()
+}
+
+func (CompletionStatus) Type() protoreflect.EnumType {
+	return &file_chat_proto_enumTypes[2]
+}
+
+func (x CompletionStatus) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use CompletionStatus.Descriptor instead.
+func (CompletionStatus) EnumDescriptor() ([]byte, []int) {
+	return file_chat_proto_rawDescGZIP(), []int{2}
+}
+
 type ChatError int32
 
 const (
@@ -180,11 +229,11 @@ func (x ChatError) String() string {
 }
 
 func (ChatError) Descriptor() protoreflect.EnumDescriptor {
-	return file_chat_proto_enumTypes[2].Descriptor()
+	return file_chat_proto_enumTypes[3].Descriptor()
 }
 
 func (ChatError) Type() protoreflect.EnumType {
-	return &file_chat_proto_enumTypes[2]
+	return &file_chat_proto_enumTypes[3]
 }
 
 func (x ChatError) Number() protoreflect.EnumNumber {
@@ -193,7 +242,7 @@ func (x ChatError) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use ChatError.Descriptor instead.
 func (ChatError) EnumDescriptor() ([]byte, []int) {
-	return file_chat_proto_rawDescGZIP(), []int{2}
+	return file_chat_proto_rawDescGZIP(), []int{3}
 }
 
 type MessageResponseError struct {
@@ -1799,11 +1848,12 @@ type CompletionResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Messages        []*Message `protobuf:"bytes,1,rep,name=messages,proto3" json:"messages,omitempty"`
-	InputTokens     *int32     `protobuf:"varint,2,opt,name=input_tokens,json=inputTokens,proto3,oneof" json:"input_tokens,omitempty"`
-	OutputTokens    *int32     `protobuf:"varint,3,opt,name=output_tokens,json=outputTokens,proto3,oneof" json:"output_tokens,omitempty"`
-	ImageResolution *string    `protobuf:"bytes,4,opt,name=image_resolution,json=imageResolution,proto3,oneof" json:"image_resolution,omitempty"`
-	ImageSteps      *int32     `protobuf:"varint,5,opt,name=image_steps,json=imageSteps,proto3,oneof" json:"image_steps,omitempty"`
+	Messages        []*Message        `protobuf:"bytes,1,rep,name=messages,proto3" json:"messages,omitempty"`
+	InputTokens     *int32            `protobuf:"varint,2,opt,name=input_tokens,json=inputTokens,proto3,oneof" json:"input_tokens,omitempty"`
+	OutputTokens    *int32            `protobuf:"varint,3,opt,name=output_tokens,json=outputTokens,proto3,oneof" json:"output_tokens,omitempty"`
+	ImageResolution *string           `protobuf:"bytes,4,opt,name=image_resolution,json=imageResolution,proto3,oneof" json:"image_resolution,omitempty"`
+	ImageSteps      *int32            `protobuf:"varint,5,opt,name=image_steps,json=imageSteps,proto3,oneof" json:"image_steps,omitempty"`
+	Status          *CompletionStatus `protobuf:"varint,6,opt,name=status,proto3,enum=chat.CompletionStatus,oneof" json:"status,omitempty"`
 }
 
 func (x *CompletionResponse) Reset() {
@@ -1873,6 +1923,13 @@ func (x *CompletionResponse) GetImageSteps() int32 {
 	return 0
 }
 
+func (x *CompletionResponse) GetStatus() CompletionStatus {
+	if x != nil && x.Status != nil {
+		return *x.Status
+	}
+	return CompletionStatus_COMPLETED
+}
+
 type BasePayload struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2422,7 +2479,7 @@ var file_chat_proto_rawDesc = []byte{
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@@ -2436,12 +2493,16 @@ var file_chat_proto_rawDesc = []byte{
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@@ -2490,50 +2551,54 @@ var file_chat_proto_rawDesc = []byte{
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+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -2548,91 +2613,93 @@ func file_chat_proto_rawDescGZIP() []byte {
 	return file_chat_proto_rawDescData
 }
 
-var file_chat_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
+var file_chat_proto_enumTypes = make([]protoimpl.EnumInfo, 4)
 var file_chat_proto_msgTypes = make([]protoimpl.MessageInfo, 33)
 var file_chat_proto_goTypes = []interface{}{
 	(MessageType)(0),                      // 0: chat.MessageType
 	(MessageError)(0),                     // 1: chat.MessageError
-	(ChatError)(0),                        // 2: chat.ChatError
-	(*MessageResponseError)(nil),          // 3: chat.MessageResponseError
-	(*Message)(nil),                       // 4: chat.Message
-	(*Messages)(nil),                      // 5: chat.Messages
-	(*MessageDeletionRequest)(nil),        // 6: chat.MessageDeletionRequest
-	(*MessageDeletionResponse)(nil),       // 7: chat.MessageDeletionResponse
-	(*MessageRatinResponseError)(nil),     // 8: chat.MessageRatinResponseError
-	(*MessageRating)(nil),                 // 9: chat.MessageRating
-	(*MessageRatingCreationRequest)(nil),  // 10: chat.MessageRatingCreationRequest
-	(*MessageRatingCreationResponse)(nil), // 11: chat.MessageRatingCreationResponse
-	(*Chat)(nil),                          // 12: chat.Chat
-	(*ChatMessages)(nil),                  // 13: chat.ChatMessages
-	(*ChatResponseError)(nil),             // 14: chat.ChatResponseError
-	(*ChatCreationRequest)(nil),           // 15: chat.ChatCreationRequest
-	(*ChatCreationResponse)(nil),          // 16: chat.ChatCreationResponse
-	(*ChatGetRequest)(nil),                // 17: chat.ChatGetRequest
-	(*ChatGetResponse)(nil),               // 18: chat.ChatGetResponse
-	(*ChatMessageGetRequest)(nil),         // 19: chat.ChatMessageGetRequest
-	(*ChatMessageGetResponse)(nil),        // 20: chat.ChatMessageGetResponse
-	(*ChatDeletionRequest)(nil),           // 21: chat.ChatDeletionRequest
-	(*ChatDeletionResponse)(nil),          // 22: chat.ChatDeletionResponse
-	(*ChatUpdateRequest)(nil),             // 23: chat.ChatUpdateRequest
-	(*ChatUpdateResponse)(nil),            // 24: chat.ChatUpdateResponse
-	(*ChatListRequest)(nil),               // 25: chat.ChatListRequest
-	(*ChatListResponse)(nil),              // 26: chat.ChatListResponse
-	(*ChatStarRequest)(nil),               // 27: chat.ChatStarRequest
-	(*ChatStarResponse)(nil),              // 28: chat.ChatStarResponse
-	(*CompletionResponse)(nil),            // 29: chat.CompletionResponse
-	(*BasePayload)(nil),                   // 30: chat.BasePayload
-	(*ChatCompletionRequest)(nil),         // 31: chat.ChatCompletionRequest
-	(*ChatStopCompletionRequest)(nil),     // 32: chat.ChatStopCompletionRequest
-	(*ChatStopCompletionResponse)(nil),    // 33: chat.ChatStopCompletionResponse
-	(*ChatCompletionResponse)(nil),        // 34: chat.ChatCompletionResponse
-	nil,                                   // 35: chat.ChatMessages.MessagesEntry
+	(CompletionStatus)(0),                 // 2: chat.CompletionStatus
+	(ChatError)(0),                        // 3: chat.ChatError
+	(*MessageResponseError)(nil),          // 4: chat.MessageResponseError
+	(*Message)(nil),                       // 5: chat.Message
+	(*Messages)(nil),                      // 6: chat.Messages
+	(*MessageDeletionRequest)(nil),        // 7: chat.MessageDeletionRequest
+	(*MessageDeletionResponse)(nil),       // 8: chat.MessageDeletionResponse
+	(*MessageRatinResponseError)(nil),     // 9: chat.MessageRatinResponseError
+	(*MessageRating)(nil),                 // 10: chat.MessageRating
+	(*MessageRatingCreationRequest)(nil),  // 11: chat.MessageRatingCreationRequest
+	(*MessageRatingCreationResponse)(nil), // 12: chat.MessageRatingCreationResponse
+	(*Chat)(nil),                          // 13: chat.Chat
+	(*ChatMessages)(nil),                  // 14: chat.ChatMessages
+	(*ChatResponseError)(nil),             // 15: chat.ChatResponseError
+	(*ChatCreationRequest)(nil),           // 16: chat.ChatCreationRequest
+	(*ChatCreationResponse)(nil),          // 17: chat.ChatCreationResponse
+	(*ChatGetRequest)(nil),                // 18: chat.ChatGetRequest
+	(*ChatGetResponse)(nil),               // 19: chat.ChatGetResponse
+	(*ChatMessageGetRequest)(nil),         // 20: chat.ChatMessageGetRequest
+	(*ChatMessageGetResponse)(nil),        // 21: chat.ChatMessageGetResponse
+	(*ChatDeletionRequest)(nil),           // 22: chat.ChatDeletionRequest
+	(*ChatDeletionResponse)(nil),          // 23: chat.ChatDeletionResponse
+	(*ChatUpdateRequest)(nil),             // 24: chat.ChatUpdateRequest
+	(*ChatUpdateResponse)(nil),            // 25: chat.ChatUpdateResponse
+	(*ChatListRequest)(nil),               // 26: chat.ChatListRequest
+	(*ChatListResponse)(nil),              // 27: chat.ChatListResponse
+	(*ChatStarRequest)(nil),               // 28: chat.ChatStarRequest
+	(*ChatStarResponse)(nil),              // 29: chat.ChatStarResponse
+	(*CompletionResponse)(nil),            // 30: chat.CompletionResponse
+	(*BasePayload)(nil),                   // 31: chat.BasePayload
+	(*ChatCompletionRequest)(nil),         // 32: chat.ChatCompletionRequest
+	(*ChatStopCompletionRequest)(nil),     // 33: chat.ChatStopCompletionRequest
+	(*ChatStopCompletionResponse)(nil),    // 34: chat.ChatStopCompletionResponse
+	(*ChatCompletionResponse)(nil),        // 35: chat.ChatCompletionResponse
+	nil,                                   // 36: chat.ChatMessages.MessagesEntry
 }
 var file_chat_proto_depIdxs = []int32{
 	1,  // 0: chat.MessageResponseError.code:type_name -> chat.MessageError
 	0,  // 1: chat.Message.type:type_name -> chat.MessageType
-	4,  // 2: chat.Messages.messages:type_name -> chat.Message
+	5,  // 2: chat.Messages.messages:type_name -> chat.Message
 	1,  // 3: chat.MessageDeletionResponse.error:type_name -> chat.MessageError
 	1,  // 4: chat.MessageRatinResponseError.code:type_name -> chat.MessageError
-	8,  // 5: chat.MessageRatingCreationResponse.error:type_name -> chat.MessageRatinResponseError
-	9,  // 6: chat.MessageRatingCreationResponse.message_rating:type_name -> chat.MessageRating
-	35, // 7: chat.ChatMessages.messages:type_name -> chat.ChatMessages.MessagesEntry
-	2,  // 8: chat.ChatResponseError.code:type_name -> chat.ChatError
-	12, // 9: chat.ChatCreationResponse.chat:type_name -> chat.Chat
-	14, // 10: chat.ChatCreationResponse.error:type_name -> chat.ChatResponseError
-	12, // 11: chat.ChatGetResponse.chat:type_name -> chat.Chat
-	14, // 12: chat.ChatGetResponse.error:type_name -> chat.ChatResponseError
-	14, // 13: chat.ChatMessageGetResponse.error:type_name -> chat.ChatResponseError
-	13, // 14: chat.ChatMessageGetResponse.messages:type_name -> chat.ChatMessages
-	14, // 15: chat.ChatDeletionResponse.error:type_name -> chat.ChatResponseError
-	12, // 16: chat.ChatUpdateResponse.chat:type_name -> chat.Chat
-	14, // 17: chat.ChatUpdateResponse.error:type_name -> chat.ChatResponseError
-	12, // 18: chat.ChatListResponse.chat:type_name -> chat.Chat
-	14, // 19: chat.ChatListResponse.error:type_name -> chat.ChatResponseError
-	12, // 20: chat.ChatStarResponse.chat:type_name -> chat.Chat
-	2,  // 21: chat.ChatStarResponse.code:type_name -> chat.ChatError
-	4,  // 22: chat.CompletionResponse.messages:type_name -> chat.Message
-	14, // 23: chat.ChatStopCompletionResponse.error:type_name -> chat.ChatResponseError
-	29, // 24: chat.ChatCompletionResponse.completion:type_name -> chat.CompletionResponse
-	14, // 25: chat.ChatCompletionResponse.error:type_name -> chat.ChatResponseError
-	5,  // 26: chat.ChatMessages.MessagesEntry.value:type_name -> chat.Messages
-	15, // 27: chat.ChatService.Create:input_type -> chat.ChatCreationRequest
-	17, // 28: chat.ChatService.Get:input_type -> chat.ChatGetRequest
-	25, // 29: chat.ChatService.List:input_type -> chat.ChatListRequest
-	21, // 30: chat.ChatService.Delete:input_type -> chat.ChatDeletionRequest
-	23, // 31: chat.ChatService.Update:input_type -> chat.ChatUpdateRequest
-	27, // 32: chat.ChatService.Star:input_type -> chat.ChatStarRequest
-	16, // 33: chat.ChatService.Create:output_type -> chat.ChatCreationResponse
-	18, // 34: chat.ChatService.Get:output_type -> chat.ChatGetResponse
-	26, // 35: chat.ChatService.List:output_type -> chat.ChatListResponse
-	22, // 36: chat.ChatService.Delete:output_type -> chat.ChatDeletionResponse
-	24, // 37: chat.ChatService.Update:output_type -> chat.ChatUpdateResponse
-	28, // 38: chat.ChatService.Star:output_type -> chat.ChatStarResponse
-	33, // [33:39] is the sub-list for method output_type
-	27, // [27:33] is the sub-list for method input_type
-	27, // [27:27] is the sub-list for extension type_name
-	27, // [27:27] is the sub-list for extension extendee
-	0,  // [0:27] is the sub-list for field type_name
+	9,  // 5: chat.MessageRatingCreationResponse.error:type_name -> chat.MessageRatinResponseError
+	10, // 6: chat.MessageRatingCreationResponse.message_rating:type_name -> chat.MessageRating
+	36, // 7: chat.ChatMessages.messages:type_name -> chat.ChatMessages.MessagesEntry
+	3,  // 8: chat.ChatResponseError.code:type_name -> chat.ChatError
+	13, // 9: chat.ChatCreationResponse.chat:type_name -> chat.Chat
+	15, // 10: chat.ChatCreationResponse.error:type_name -> chat.ChatResponseError
+	13, // 11: chat.ChatGetResponse.chat:type_name -> chat.Chat
+	15, // 12: chat.ChatGetResponse.error:type_name -> chat.ChatResponseError
+	15, // 13: chat.ChatMessageGetResponse.error:type_name -> chat.ChatResponseError
+	14, // 14: chat.ChatMessageGetResponse.messages:type_name -> chat.ChatMessages
+	15, // 15: chat.ChatDeletionResponse.error:type_name -> chat.ChatResponseError
+	13, // 16: chat.ChatUpdateResponse.chat:type_name -> chat.Chat
+	15, // 17: chat.ChatUpdateResponse.error:type_name -> chat.ChatResponseError
+	13, // 18: chat.ChatListResponse.chat:type_name -> chat.Chat
+	15, // 19: chat.ChatListResponse.error:type_name -> chat.ChatResponseError
+	13, // 20: chat.ChatStarResponse.chat:type_name -> chat.Chat
+	3,  // 21: chat.ChatStarResponse.code:type_name -> chat.ChatError
+	5,  // 22: chat.CompletionResponse.messages:type_name -> chat.Message
+	2,  // 23: chat.CompletionResponse.status:type_name -> chat.CompletionStatus
+	15, // 24: chat.ChatStopCompletionResponse.error:type_name -> chat.ChatResponseError
+	30, // 25: chat.ChatCompletionResponse.completion:type_name -> chat.CompletionResponse
+	15, // 26: chat.ChatCompletionResponse.error:type_name -> chat.ChatResponseError
+	6,  // 27: chat.ChatMessages.MessagesEntry.value:type_name -> chat.Messages
+	16, // 28: chat.ChatService.Create:input_type -> chat.ChatCreationRequest
+	18, // 29: chat.ChatService.Get:input_type -> chat.ChatGetRequest
+	26, // 30: chat.ChatService.List:input_type -> chat.ChatListRequest
+	22, // 31: chat.ChatService.Delete:input_type -> chat.ChatDeletionRequest
+	24, // 32: chat.ChatService.Update:input_type -> chat.ChatUpdateRequest
+	28, // 33: chat.ChatService.Star:input_type -> chat.ChatStarRequest
+	17, // 34: chat.ChatService.Create:output_type -> chat.ChatCreationResponse
+	19, // 35: chat.ChatService.Get:output_type -> chat.ChatGetResponse
+	27, // 36: chat.ChatService.List:output_type -> chat.ChatListResponse
+	23, // 37: chat.ChatService.Delete:output_type -> chat.ChatDeletionResponse
+	25, // 38: chat.ChatService.Update:output_type -> chat.ChatUpdateResponse
+	29, // 39: chat.ChatService.Star:output_type -> chat.ChatStarResponse
+	34, // [34:40] is the sub-list for method output_type
+	28, // [28:34] is the sub-list for method input_type
+	28, // [28:28] is the sub-list for extension type_name
+	28, // [28:28] is the sub-list for extension extendee
+	0,  // [0:28] is the sub-list for field type_name
 }
 
 func init() { file_chat_proto_init() }
@@ -3061,7 +3128,7 @@ func file_chat_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_chat_proto_rawDesc,
-			NumEnums:      3,
+			NumEnums:      4,
 			NumMessages:   33,
 			NumExtensions: 0,
 			NumServices:   1,
diff --git a/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.validate.go b/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.validate.go
index ee6b3ba..d06b2a0 100644
--- a/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.validate.go
+++ b/go/github.com/jupyter-naas/naas-models/go/chat/chat.pb.validate.go
@@ -3550,6 +3550,10 @@ func (m *CompletionResponse) validate(all bool) error {
 		// no validation rules for ImageSteps
 	}
 
+	if m.Status != nil {
+		// no validation rules for Status
+	}
+
 	if len(errors) > 0 {
 		return CompletionResponseMultiError(errors)
 	}
diff --git a/protos/chat.proto b/protos/chat.proto
index c48d059..fc56475 100644
--- a/protos/chat.proto
+++ b/protos/chat.proto
@@ -24,6 +24,12 @@ enum MessageError {
     MESSAGE_NOT_AUTHORIZED = 4;
 }
 
+enum CompletionStatus {
+    COMPLETED = 0;
+    FAILED = 1;
+    TIMEOUT = 2;
+}
+
 message MessageResponseError {
     optional MessageError code = 1;
     optional string status = 2;
@@ -223,6 +229,7 @@ message CompletionResponse {
     optional int32 output_tokens = 3;
     optional string image_resolution = 4;
     optional int32 image_steps = 5;
+    optional CompletionStatus status = 6;
 }
 
 message BasePayload {
diff --git a/python/naas_models/chat_pb2.py b/python/naas_models/chat_pb2.py
index 78c085a..237af99 100644
--- a/python/naas_models/chat_pb2.py
+++ b/python/naas_models/chat_pb2.py
@@ -17,12 +17,14 @@
 import naas_models.validate_pb2 as validate__pb2
 
 
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\nchat.proto\x12\x04\x63hat\x1a\x1cgoogle/protobuf/struct.proto\x1a\x0evalidate.proto\"\xa8\x01\n\x14MessageResponseError\x12%\n\x04\x63ode\x18\x01 \x01(\x0e\x32\x12.chat.MessageErrorH\x00\x88\x01\x01\x12\x13\n\x06status\x18\x02 \x01(\tH\x01\x88\x01\x01\x12\x13\n\x06reason\x18\x03 \x01(\tH\x02\x88\x01\x01\x12\x14\n\x07message\x18\x04 \x01(\tH\x03\x88\x01\x01\x42\x07\n\x05_codeB\t\n\x07_statusB\t\n\x07_reasonB\n\n\x08_message\"\xd4\x04\n\x07Message\x12\x0f\n\x02id\x18\x01 \x01(\x05H\x00\x88\x01\x01\x12\x14\n\x07version\x18\x02 \x01(\x05H\x01\x88\x01\x01\x12!\n\ncreated_at\x18\x03 \x01(\tB\x08\xfa\x42\x05r\x03\xd0\x01\x01H\x02\x88\x01\x01\x12\x14\n\x07\x63hat_id\x18\x04 \x01(\x05H\x03\x88\x01\x01\x12\x16\n\tfrom_user\x18\x05 \x01(\x08H\x04\x88\x01\x01\x12\x14\n\x07message\x18\x06 \x01(\tH\x05\x88\x01\x01\x12#\n\x0cmessage_type\x18\x07 \x01(\tB\x08\xfa\x42\x05r\x03\xd0\x01\x01H\x06\x88\x01\x01\x12\'\n\x10message_language\x18\x08 \x01(\tB\x08\xfa\x42\x05r\x03\xd0\x01\x01H\x07\x88\x01\x01\x12\x15\n\x08model_id\x18\t \x01(\tH\x08\x88\x01\x01\x12$\n\x04type\x18\n \x01(\x0e\x32\x11.chat.MessageTypeH\t\x88\x01\x01\x12\x15\n\x08metadata\x18\x0b \x01(\tH\n\x88\x01\x01\x12!\n\ndeleted_at\x18\x0c \x01(\tB\x08\xfa\x42\x05r\x03\xd0\x01\x01H\x0b\x88\x01\x01\x12\x15\n\x08selected\x18\r \x01(\x08H\x0c\x88\x01\x01\x12\"\n\x0b\x61rchived_at\x18\x0e \x01(\tB\x08\xfa\x42\x05r\x03\xd0\x01\x01H\r\x88\x01\x01\x42\x05\n\x03_idB\n\n\x08_versionB\r\n\x0b_created_atB\n\n\x08_chat_idB\x0c\n\n_from_userB\n\n\x08_messageB\x0f\n\r_message_typeB\x13\n\x11_message_languageB\x0b\n\t_model_idB\x07\n\x05_typeB\x0b\n\t_metadataB\r\n\x0b_deleted_atB\x0b\n\t_selectedB\x0e\n\x0c_archived_at\"+\n\x08Messages\x12\x1f\n\x08messages\x18\x01 \x03(\x0b\x32\r.chat.Message\"R\n\x16MessageDeletionRequest\x12\x0f\n\x02id\x18\x01 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\n\x1c\x43HAT_CONTEXT_LENGTH_EXCEEDED\x10\x08\x32\xfa\x02\n\x0b\x43hatService\x12\x41\n\x06\x43reate\x12\x19.chat.ChatCreationRequest\x1a\x1a.chat.ChatCreationResponse\"\x00\x12\x34\n\x03Get\x12\x14.chat.ChatGetRequest\x1a\x15.chat.ChatGetResponse\"\x00\x12\x37\n\x04List\x12\x15.chat.ChatListRequest\x1a\x16.chat.ChatListResponse\"\x00\x12\x41\n\x06\x44\x65lete\x12\x19.chat.ChatDeletionRequest\x1a\x1a.chat.ChatDeletionResponse\"\x00\x12=\n\x06Update\x12\x17.chat.ChatUpdateRequest\x1a\x18.chat.ChatUpdateResponse\"\x00\x12\x37\n\x04Star\x12\x15.chat.ChatStarRequest\x1a\x16.chat.ChatStarResponse\"\x00\x42-Z+github.com/jupyter-naas/naas-models/go/chatb\x06proto3')
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\nchat.proto\x12\x04\x63hat\x1a\x1cgoogle/protobuf/struct.proto\x1a\x0evalidate.proto\"\xa8\x01\n\x14MessageResponseError\x12%\n\x04\x63ode\x18\x01 \x01(\x0e\x32\x12.chat.MessageErrorH\x00\x88\x01\x01\x12\x13\n\x06status\x18\x02 \x01(\tH\x01\x88\x01\x01\x12\x13\n\x06reason\x18\x03 \x01(\tH\x02\x88\x01\x01\x12\x14\n\x07message\x18\x04 \x01(\tH\x03\x88\x01\x01\x42\x07\n\x05_codeB\t\n\x07_statusB\t\n\x07_reasonB\n\n\x08_message\"\xd4\x04\n\x07Message\x12\x0f\n\x02id\x18\x01 \x01(\x05H\x00\x88\x01\x01\x12\x14\n\x07version\x18\x02 \x01(\x05H\x01\x88\x01\x01\x12!\n\ncreated_at\x18\x03 \x01(\tB\x08\xfa\x42\x05r\x03\xd0\x01\x01H\x02\x88\x01\x01\x12\x14\n\x07\x63hat_id\x18\x04 \x01(\x05H\x03\x88\x01\x01\x12\x16\n\tfrom_user\x18\x05 \x01(\x08H\x04\x88\x01\x01\x12\x14\n\x07message\x18\x06 \x01(\tH\x05\x88\x01\x01\x12#\n\x0cmessage_type\x18\x07 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\n\x1c\x43HAT_CONTEXT_LENGTH_EXCEEDED\x10\x08\x32\xfa\x02\n\x0b\x43hatService\x12\x41\n\x06\x43reate\x12\x19.chat.ChatCreationRequest\x1a\x1a.chat.ChatCreationResponse\"\x00\x12\x34\n\x03Get\x12\x14.chat.ChatGetRequest\x1a\x15.chat.ChatGetResponse\"\x00\x12\x37\n\x04List\x12\x15.chat.ChatListRequest\x1a\x16.chat.ChatListResponse\"\x00\x12\x41\n\x06\x44\x65lete\x12\x19.chat.ChatDeletionRequest\x1a\x1a.chat.ChatDeletionResponse\"\x00\x12=\n\x06Update\x12\x17.chat.ChatUpdateRequest\x1a\x18.chat.ChatUpdateResponse\"\x00\x12\x37\n\x04Star\x12\x15.chat.ChatStarRequest\x1a\x16.chat.ChatStarResponse\"\x00\x42-Z+github.com/jupyter-naas/naas-models/go/chatb\x06proto3')
 
 _MESSAGETYPE = DESCRIPTOR.enum_types_by_name['MessageType']
 MessageType = enum_type_wrapper.EnumTypeWrapper(_MESSAGETYPE)
 _MESSAGEERROR = DESCRIPTOR.enum_types_by_name['MessageError']
 MessageError = enum_type_wrapper.EnumTypeWrapper(_MESSAGEERROR)
+_COMPLETIONSTATUS = DESCRIPTOR.enum_types_by_name['CompletionStatus']
+CompletionStatus = enum_type_wrapper.EnumTypeWrapper(_COMPLETIONSTATUS)
 _CHATERROR = DESCRIPTOR.enum_types_by_name['ChatError']
 ChatError = enum_type_wrapper.EnumTypeWrapper(_CHATERROR)
 UNDEFINED = 0
@@ -34,6 +36,9 @@
 MESSAGE_NOT_FOUND = 2
 MESSAGE_NOT_UPDATED = 3
 MESSAGE_NOT_AUTHORIZED = 4
+COMPLETED = 0
+FAILED = 1
+TIMEOUT = 2
 CHAT_NO_ERROR = 0
 CHAT_ALREADY_EXISTS = 1
 CHAT_NOT_FOUND = 2
@@ -331,12 +336,14 @@
   _MESSAGERATINGCREATIONREQUEST.fields_by_name['rating']._serialized_options = b'\372B\027r\0252\020^(LIKE|DISLIKE)$\320\001\000'
   _CHATMESSAGES_MESSAGESENTRY._options = None
   _CHATMESSAGES_MESSAGESENTRY._serialized_options = b'8\001'
-  _MESSAGETYPE._serialized_start=4438
-  _MESSAGETYPE._serialized_end=4497
-  _MESSAGEERROR._serialized_start=4500
-  _MESSAGEERROR._serialized_end=4640
-  _CHATERROR._serialized_start=4643
-  _CHATERROR._serialized_end=4896
+  _MESSAGETYPE._serialized_start=4494
+  _MESSAGETYPE._serialized_end=4553
+  _MESSAGEERROR._serialized_start=4556
+  _MESSAGEERROR._serialized_end=4696
+  _COMPLETIONSTATUS._serialized_start=4698
+  _COMPLETIONSTATUS._serialized_end=4756
+  _CHATERROR._serialized_start=4759
+  _CHATERROR._serialized_end=5012
   _MESSAGERESPONSEERROR._serialized_start=67
   _MESSAGERESPONSEERROR._serialized_end=235
   _MESSAGE._serialized_start=238
@@ -392,17 +399,17 @@
   _CHATSTARRESPONSE._serialized_start=3587
   _CHATSTARRESPONSE._serialized_end=3690
   _COMPLETIONRESPONSE._serialized_start=3693
-  _COMPLETIONRESPONSE._serialized_end=3930
-  _BASEPAYLOAD._serialized_start=3932
-  _BASEPAYLOAD._serialized_end=4031
-  _CHATCOMPLETIONREQUEST._serialized_start=4033
-  _CHATCOMPLETIONREQUEST._serialized_end=4150
-  _CHATSTOPCOMPLETIONREQUEST._serialized_start=4152
-  _CHATSTOPCOMPLETIONREQUEST._serialized_end=4203
-  _CHATSTOPCOMPLETIONRESPONSE._serialized_start=4205
-  _CHATSTOPCOMPLETIONRESPONSE._serialized_end=4288
-  _CHATCOMPLETIONRESPONSE._serialized_start=4291
-  _CHATCOMPLETIONRESPONSE._serialized_end=4436
-  _CHATSERVICE._serialized_start=4899
-  _CHATSERVICE._serialized_end=5277
+  _COMPLETIONRESPONSE._serialized_end=3986
+  _BASEPAYLOAD._serialized_start=3988
+  _BASEPAYLOAD._serialized_end=4087
+  _CHATCOMPLETIONREQUEST._serialized_start=4089
+  _CHATCOMPLETIONREQUEST._serialized_end=4206
+  _CHATSTOPCOMPLETIONREQUEST._serialized_start=4208
+  _CHATSTOPCOMPLETIONREQUEST._serialized_end=4259
+  _CHATSTOPCOMPLETIONRESPONSE._serialized_start=4261
+  _CHATSTOPCOMPLETIONRESPONSE._serialized_end=4344
+  _CHATCOMPLETIONRESPONSE._serialized_start=4347
+  _CHATCOMPLETIONRESPONSE._serialized_end=4492
+  _CHATSERVICE._serialized_start=5015
+  _CHATSERVICE._serialized_end=5393
 # @@protoc_insertion_point(module_scope)
diff --git a/python/naas_models/pydantic/chat_p2p.py b/python/naas_models/pydantic/chat_p2p.py
index 7595d46..e75a957 100644
--- a/python/naas_models/pydantic/chat_p2p.py
+++ b/python/naas_models/pydantic/chat_p2p.py
@@ -27,6 +27,12 @@ class MessageError(IntEnum):
     MESSAGE_NOT_AUTHORIZED = 4
 
 
+class CompletionStatus(IntEnum):
+    COMPLETED = 0
+    FAILED = 1
+    TIMEOUT = 2
+
+
 class ChatError(IntEnum):
     CHAT_NO_ERROR = 0
     CHAT_ALREADY_EXISTS = 1
@@ -344,7 +350,7 @@ class ChatStarResponse(BaseModel):
 
 class CompletionResponse(BaseModel):
 
-    _one_of_dict = {"CompletionResponse._image_resolution": {"fields": {"image_resolution"}}, "CompletionResponse._image_steps": {"fields": {"image_steps"}}, "CompletionResponse._input_tokens": {"fields": {"input_tokens"}}, "CompletionResponse._output_tokens": {"fields": {"output_tokens"}}}
+    _one_of_dict = {"CompletionResponse._image_resolution": {"fields": {"image_resolution"}}, "CompletionResponse._image_steps": {"fields": {"image_steps"}}, "CompletionResponse._input_tokens": {"fields": {"input_tokens"}}, "CompletionResponse._output_tokens": {"fields": {"output_tokens"}}, "CompletionResponse._status": {"fields": {"status"}}}
     _check_one_of = root_validator(pre=True, allow_reuse=True)(check_one_of)
 
     messages: typing.List[Message] = FieldInfo(default_factory=list) 
@@ -352,6 +358,7 @@ class CompletionResponse(BaseModel):
     output_tokens: int = FieldInfo(default=0) 
     image_resolution: str = FieldInfo(default="") 
     image_steps: int = FieldInfo(default=0) 
+    status: CompletionStatus = FieldInfo(default=0)