I'd been on Codex for a while and with Codex 5.2 I:
1) No longer found the dumb zone
2) No longer feared compaction
Switching to Opus for stupid political reasons, I still have not had the dumb zone - but I'm back to disliking compaction events and so the smaller context window it has, has really hurt.
I hope they copy OpenAI's compaction magic soon, but I am also very excited to try the longer context window.
1m context in OpenAI and Gemini is just marketing. Opus is the only model to provide real usable bug context.
This is true.
When I am using codex, compaction isn’t something I fear, it feels like you save your gaming progress and move on.
For Claude Code compaction feels disastrous, also much longer
If you use OpenCode (open source Claude Code implementation), you can configure compaction yourself : https://opencode.ai/docs/en/config/#compaction