6 Pro has a limited number of messages per week, from 15 to 200. It is by far the most useful feature the plans offer, and can go through hundreds of thousands of tokens if not million(s) for one focused task. If the message limit remains, and it depletes usage in the normal chat and codex, it's a massive downgrade for a service that has reduced the actual, real-world API equivalent cost anywhere between x2-5 times in the past couple months, resets included. It used to be the differentiator vs. Anthropic's offerings. People trying to squeeze every single token out of those services routing requests to the webui are certainly in part responsible for this, there's tons of projects that allow you to defer or split into multiple concurrent chats tasks from codex to the webui chat.