Claude can code
Last year I started using Copilot. Copilot's inline completions were often wrong (they didn't have full app context) but autocompleting and refactoring is faster than writing everything yourself. Chat was useful for writing small methods or basically saving you the time it would take to go and scan Google or Stack Overflow. All-in-all good efficiency gains.
This year I started using opencode with Claude (Sonnet 4.5 and 4.6) and yeah, Claude can code. Claude is good enough to write features on his own.
I want user registration that verifies the users email, make the link valid for 7 days, add forgot password, and enforce password complexity.
Claude can do this in a couple of minutes.
My experience so far is that you want to keep features reasonably small, review, provide feedback, ask for changes. Treat Clause like a less experienced developer on your team. And don't get carried away and let Claude write too much without stopping to properly review and understand everything.
But Claude is getting good and development is changing.