Claude code for a few months now ($100/mo plan). I was using Codex before that, both via VS code. Initially the usage limits for Claude were pretty awful, I would routinely exhaust the 5 hour window with, say, 3 different chats/tasks. It has gotten much better in the last month or so, so I'm not sure if they increased usage limits (maybe corresponding with the ridiculous amount of downtime seemingly getting better?) or something else. So far I haven't really noticed a big change between Opus 4.8 and Fable for coding - both still need a good amount of babysitting even on a smallish repo.

Also see https://model.reviews which is, as of me hitting go yesterday, an attempt to provide a forum for subjective ratings on a task-per-task basis.