I used to use Claude Code with Opus exclusively because of how good it is IME. Then Anthropic banned me so I switched to OpenCode. I really want OpenCode to win, but there is long way for it to get the same polish in the UX department (and to get a handle on the memory leaks). I am 100 % sure Claude Code is hacks upon hacks internally, but on the surface, it works quite well (not that they have fixed the flashing issue). With OpenCode I also switched to GPT-5.2-Codex and I have to say it's fairly garbage IME. I can't get it to keep working, it takes every opportunity to either tell me what I should do next for it or just tell me it figured a particular piece of the larger puzzle out and that if I want it can continue. It is not nearly as independent as Opus it. Now I'm on the Codex CLI with GPT-5.2 as I figured maybe the harness is the issue, but it is not very good either.