merge

src/providers/openai.rs

@@ -317,8 +317,7 @@ impl super::Provider for OpenAIProvider {
 
         // Standard OpenAI cleanup
         if let Some(obj) = body.as_object_mut() {
-            obj.remove("stream_options");
-
+            // stream_options.include_usage is supported by OpenAI for token usage in streaming
             // Transition: Newer OpenAI models (o1, o3, gpt-5) require max_completion_tokens
             if request.model.starts_with("o1-") || request.model.starts_with("o3-") || request.model.contains("gpt-5") {
                 if let Some(max_tokens) = obj.remove("max_tokens") {