I'm thinking about switching to ChatGPT Pro also. Any idea what maxes it out before I need to pay via the API instead? For context I'm using about 1b tokens a month so likely similar to you by the sounds of things.
On pro tier have not been able to trigger the usage cap.
Pro
Local tasks: Average users can send 300-1,500 messages every 5 hours with a weekly limit.
Cloud tasks: Generous limits for a limited time.
Best for: Developers looking to power their full workday across multiple projects.
Thank you, that's very helpful. I think I could get close to that in some coding sessions where I'm running multiple in parallel but I suspect it's very very rare. Even with token efficient gpt5-codex my OpenAI bill is quite high so I think I will switch to Pro now.
