diff --git a/relay/adaptor/openai/adaptor.go b/relay/adaptor/openai/adaptor.go
index 55eb5a4b..9b580c9a 100644
--- a/relay/adaptor/openai/adaptor.go
+++ b/relay/adaptor/openai/adaptor.go
@@ -30,16 +30,24 @@ func (a *Adaptor) Init(meta *meta.Meta) {
 func (a *Adaptor) GetRequestURL(meta *meta.Meta) (string, error) {
 	switch meta.ChannelType {
 	case channeltype.Azure:
+		defaultVersion := meta.Config.APIVersion
+
+		// https://learn.microsoft.com/en-us/azure/ai-services/openai/how-to/reasoning?tabs=python#api--feature-support
+		if strings.HasPrefix(meta.ActualModelName, "o1") ||
+			strings.HasPrefix(meta.ActualModelName, "o3") {
+			defaultVersion = "2024-12-01-preview"
+		}
+
 		if meta.Mode == relaymode.ImagesGenerations {
 			// https://learn.microsoft.com/en-us/azure/ai-services/openai/dall-e-quickstart?tabs=dalle3%2Ccommand-line&pivots=rest-api
 			// https://{resource_name}.openai.azure.com/openai/deployments/dall-e-3/images/generations?api-version=2024-03-01-preview
-			fullRequestURL := fmt.Sprintf("%s/openai/deployments/%s/images/generations?api-version=%s", meta.BaseURL, meta.ActualModelName, meta.Config.APIVersion)
+			fullRequestURL := fmt.Sprintf("%s/openai/deployments/%s/images/generations?api-version=%s", meta.BaseURL, meta.ActualModelName, defaultVersion)
 			return fullRequestURL, nil
 		}
 
 		// https://learn.microsoft.com/en-us/azure/cognitive-services/openai/chatgpt-quickstart?pivots=rest-api&tabs=command-line#rest-api
 		requestURL := strings.Split(meta.RequestURLPath, "?")[0]
-		requestURL = fmt.Sprintf("%s?api-version=%s", requestURL, meta.Config.APIVersion)
+		requestURL = fmt.Sprintf("%s?api-version=%s", requestURL, defaultVersion)
 		task := strings.TrimPrefix(requestURL, "/v1/")
 		model_ := meta.ActualModelName
 		model_ = strings.Replace(model_, ".", "", -1)