diff --git a/dto/openai_request.go b/dto/openai_request.go
index f33b2c1e..7337004f 100644
--- a/dto/openai_request.go
+++ b/dto/openai_request.go
@@ -29,6 +29,7 @@ type GeneralOpenAIRequest struct {
 	MaxTokens           uint              `json:"max_tokens,omitempty"`
 	MaxCompletionTokens uint              `json:"max_completion_tokens,omitempty"`
 	ReasoningEffort     string            `json:"reasoning_effort,omitempty"`
+	Verbosity           json.RawMessage   `json:"verbosity,omitempty"` // gpt-5
 	Temperature         *float64          `json:"temperature,omitempty"`
 	TopP                float64           `json:"top_p,omitempty"`
 	TopK                int               `json:"top_k,omitempty"`