Show HN: Muxer – open-source model multiplexer for Claude Code (github.com)

A new open-source tool called Muxer has been introduced as a plugin for Claude Code, designed to optimize the allocation of tasks among various AI models based on their cost and capabilities. Muxer allows a premium model, Fable, to direct the session while delegating routine tasks to cheaper alternatives like Opus, Sonnet, and Haiku, significantly reducing billing costs associated with using high-priced models. This multiplexer system intelligently selects the appropriate model for each subtask, ensuring that essential creative and planning tasks are managed by Fable while more straightforward operations are assigned to less costly models. The significance of Muxer for the AI/ML community lies in its potential to streamline workflows and enhance cost efficiency in AI model usage. By creating a structured routing policy and model delegation system, Muxer ensures that tasks are executed at the lowest effective cost while maintaining quality. Key features include dedicated agents for various roles (e.g., reconnaissance, documentation, implementation, and verification) and a built-in monitoring system that provides expense estimates and actual costs, promoting transparent budget management. This innovative approach could serve as a blueprint for future cost-effective AI orchestration in various applications.