Weave Router cuts AI coding costs by 40% with smart model selection

Weave Router is a new open-source tool that plugs into coding agents like Claude Code and Cursor, routing each request to the most cost-effective LLM. It uses a reinforcement learning model trained on thousands of agent traces to decide which model to use, saving 40% on tokens without quality loss. The router is available under Elastic License 2.0 for self-hosting or via a hosted service.