For toy and low effort coding it works fantastic. I can smash out changes and PRs fantastically quick, and they’re mostly correct. However, certain problem domains and tough problems cause it to spin its wheels worse than a junior programmer. Especially if some of the back and forth troubleshooting goes longer than one context compaction. Then it can forget the context of what it’s tried in the past, and goes back to square one (it may know that it tried something, but it won’t know the exact details).