Claude Code is the best agentic coding interface right now, but out of the box it only talks to Anthropic's API with Anthropic billing. Sometimes you want the same interface with a different brain: Kimi K3 for cheap long sessions, GPT-5.4 to cross-check a plan, Gemini 3.7 Flash for speed, or simply a model that runs on EU infrastructure because your client requires it.
There are three ways to do this. I'll go from most configurable to least effort.
Option 1: claude-code-router
claude-code-router is the community answer, and it's genuinely powerful: per-task routing rules, request transformers, plugins. If you want "background tasks go to a cheap model, planning goes to a big one," this is your tool.
The tradeoff is that you run and maintain a local proxy with a JSON config, and you still need API keys for every provider you route to. For a team setup that's real overhead.
