diff --git a/relaykit/dto/openai_request.go b/relaykit/dto/openai_request.go
index 0e4ad043..d54ac0d1 100644
--- a/relaykit/dto/openai_request.go
+++ b/relaykit/dto/openai_request.go
@@ -106,6 +106,8 @@ type GeneralOpenAIRequest struct {
 	SearchMode             json.RawMessage `json:"search_mode,omitempty"`
 	// Minimax
 	ReasoningSplit json.RawMessage `json:"reasoning_split,omitempty"`
+	// vLLM
+	ThinkingTokenBudget json.RawMessage `json:"thinking_token_budget,omitempty"`
 }
 
 func (r GeneralOpenAIRequest) MarshalJSON() ([]byte, error) {
@@ -859,14 +861,14 @@ type OpenAIResponsesRequest struct {
 	Include json.RawMessage `json:"include,omitempty"`
 	// 在后台运行推理，暂时还不支持依赖的接口
 	// Background         json.RawMessage `json:"background,omitempty"`
-	Conversation       json.RawMessage `json:"conversation,omitempty"`
-	ContextManagement  json.RawMessage `json:"context_management,omitempty"`
-	Instructions       json.RawMessage `json:"instructions,omitempty"`
-	MaxOutputTokens    *uint           `json:"max_output_tokens,omitempty"`
-	TopLogProbs        *int            `json:"top_logprobs,omitempty"`
-	Metadata           json.RawMessage `json:"metadata,omitempty"`
-	Moderation         json.RawMessage `json:"moderation,omitempty"`
-	ParallelToolCalls  json.RawMessage `json:"parallel_tool_calls,omitempty"`
+	Conversation      json.RawMessage `json:"conversation,omitempty"`
+	ContextManagement json.RawMessage `json:"context_management,omitempty"`
+	Instructions      json.RawMessage `json:"instructions,omitempty"`
+	MaxOutputTokens   *uint           `json:"max_output_tokens,omitempty"`
+	TopLogProbs       *int            `json:"top_logprobs,omitempty"`
+	Metadata          json.RawMessage `json:"metadata,omitempty"`
+	Moderation        json.RawMessage `json:"moderation,omitempty"`
+	ParallelToolCalls json.RawMessage `json:"parallel_tool_calls,omitempty"`
 	// FrequencyPenalty/PresencePenalty are not part of the official OpenAI
 	// Responses API; they are forwarded verbatim for OpenAI-compatible upstreams
 	// (e.g. vLLM) that accept them.