Update openai.ts

// add max_tokens to vision model
    if (visionModel) {
      Object.defineProperty(requestPayload, "max_tokens", {
        enumerable: true,
        configurable: true,
        writable: true,
        value: 4096,
      });
    }

    // value: modelConfig.max_tokens,

app/client/platforms/openai.ts

@@ -147,10 +147,13 @@ export class ChatGPTApi implements LLMApi {
         enumerable: true,
         configurable: true,
         writable: true,
-        value: modelConfig.max_tokens,
+        value: 4096,
       });
     }
 
+    // value: modelConfig.max_tokens,
+
+
     console.log("[Request] openai payload: ", requestPayload);
 
     const modelIdentifier = modelConfig.model;