This is what got me started with claude-code. I gave it a try using openrouter API and got a bill of $40 for 2-3 hours of work. At that point, subscription to the Anthropic plan became a no-brainer
I tried quite a few of them, including the cheap / free models but the only one that was really working was claude. The others were hanging whenever the model needed a confirmation for action. Mind you, this was some time ago.