What coding agent(ideally CLI) have people found works well with this?

Occasionally I go and try different agents with openrouter models, but nothing seems to really get close to the proprietary ones like claude-code.

Pi (pi.dev) is fine. I'm using it with DS v4 right now. It's not close to Claude code but I think that's the point.

By the way OpenRouter version is very slow for some reason. DeepSeek platform is faster (and cheaper with the discount) if you don't mind passing the credit card number / email to this company.