if you've used codex or claude, how do the usage limits on fugu feel compared to the pro plans on either? honestly wouldn't mind subscribing to this if it's as generous as what codex is giving me monthly, which seems unrealistic.

Hard to say - since I used it in Beta with free credits, where the usage felt more 'Opus' than 'ChatGPT' but more efficient token wise. Switching models every time is annoying.

But their paid plans I'm not sure yet - planning to subscribe and can let you know.

Almost no chance it will be as generous as OpenAI though. They just don't have the money :-)