Claude Code will write the whole thing for you. Whereas doesn’t Copilot require input along the way of coding? ie- it doesn’t do all the programming for you

It can code the whole thing for you, copilot in vscode is simply better, people just never tried it.

If you give Copilot a file with a list of tasks to complete, it will try to churn through them (just like most other harness would do these days).

Ah okay, can it work on a whole repo in an agentic way?

Yes, of course, it can also span subagents, work for an hour without interactivity if that's what you want etc. just like any other harness.

Actually due to stupid billing system of github which charges per "premium request" instead of tokens, you could and still can abuse it so it costs nothing. They're changing it from next month to usage based billing though.