I suggest spending some time with Codex. Claude likes to hack objectives, it's really messy and it'll run off sometimes without a clear idea of what you want or how a project works. That is all fine when you're a non-technical person vibe coding a demo, but it really kills the product when you're working on hard tasks in a large codebase.

Codex is the one I haven’t really tried, I’ll have to check it out.