The difference between 4 and 3.5 is really big for creative use cases. I am running an app with significant traffic and the retention of users on GPT-4 is much

The difference between 4 and 3.5 is really big for creative use cases. I am running an app with significant traffic and the retention of users on GPT-4 is much higher. Unfortunately it's still too expensive and the completion speed is not as high as GPT-3.5 but I hope both problems will improve over time.