diff --git a/relay/model/general.go b/relay/model/general.go
index 288c07ff..5f5968c8 100644
--- a/relay/model/general.go
+++ b/relay/model/general.go
@@ -26,6 +26,7 @@ type GeneralOpenAIRequest struct {
 	Messages            []Message       `json:"messages,omitempty"`
 	Model               string          `json:"model,omitempty"`
 	Store               *bool           `json:"store,omitempty"`
+	ReasoningEffort     *string         `json:"reasoning_effort,omitempty"`
 	Metadata            any             `json:"metadata,omitempty"`
 	FrequencyPenalty    *float64        `json:"frequency_penalty,omitempty"`
 	LogitBias           any             `json:"logit_bias,omitempty"`
diff --git a/relay/model/misc.go b/relay/model/misc.go
index 163bc398..fdba01ea 100644
--- a/relay/model/misc.go
+++ b/relay/model/misc.go
@@ -4,6 +4,14 @@ type Usage struct {
 	PromptTokens     int `json:"prompt_tokens"`
 	CompletionTokens int `json:"completion_tokens"`
 	TotalTokens      int `json:"total_tokens"`
+
+	CompletionTokensDetails *CompletionTokensDetails `json:"completion_tokens_details,omitempty"`
+}
+
+type CompletionTokensDetails struct {
+	ReasoningTokens          int `json:"reasoning_tokens"`
+	AcceptedPredictionTokens int `json:"accepted_prediction_tokens"`
+	RejectedPredictionTokens int `json:"rejected_prediction_tokens"`
 }
 
 type Error struct {