Many engineers use Codex 5.3 and find it better, including Hashicorp's Mitchell.
i find codex 5.3 roughly on par with (though tbh still not quite as capable as) sonnet models, which are not even anthropic's flagship model family.
And the OpenClaw guy
alt Hacker News
i find codex 5.3 roughly on par with (though tbh still not quite as capable as) sonnet models, which are not even anthropic's flagship model family.