diff --git a/llms/openai/internal/openaiclient/chat.go b/llms/openai/internal/openaiclient/chat.go
index 4aec4ffd3..41fcbdcf4 100644
--- a/llms/openai/internal/openaiclient/chat.go
+++ b/llms/openai/internal/openaiclient/chat.go
@@ -327,7 +327,7 @@ func (c *Client) createChat(ctx context.Context, payload *ChatRequest) (*ChatCom
 	if c.baseURL == "" {
 		c.baseURL = defaultBaseURL
 	}
-	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.buildURL("/chat/completions", c.Model), body)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.buildURL("/chat/completions", payload.Model), body)
 	if err != nil {
 		return nil, err
 	}