Yes to all but I have trouble using them effectively for my research side projects or Kaggle competitions. Claude Code/Codex designs and runs experiments quickly, invalidates my initial idea using some obscure criteria than changes direction, and after long hours and days of experiments we end up with poor results. There must be a better agentic workflow for research.
When it comes to difficult optimization/search problems, doing research in a single Claude/Codex thread is definitely a struggle. There are ways to bypass some of the pitfalls by creating a agentic swarm with hard guardrails such as context resets and changing the way the harness works with memory, etc.
> invalidates my initial idea using some obscure criteria than changes direction
You might be giving it too much leeway.
Opus and Fable are more trustworthy, but even today I find they very quickly go off the rails for research tasks if I don't give them short chunks of work.
They're not ready for prime time automation of research (and before someone mentions the math results, that required absurd amounts of computation time and has immediate feedback in the form of Lean)