What do you run these on? I've gotten comfortable with Claude but if folks are getting Opus performance for cheaper I'll switch.

Try Charm Crush first, it's a native binary. If it's unbearable, try opencode, just with the knowledge your system will probably be pwned soon since it's JS + NPM + vibe coding + some of the most insufferable devs in the industry behind that product.

If you're feeling frisky, Zed has a decent agent harness and a very good editor.

You can just use Claude Code with a few env vars, most of these providers offer an Anthropic compatible API