harrrshall/tinyrouter

LLMRouter: An Open-Source Library for LLM Routing

Efficient LLM query routing via multi-sampling. BEST-Route selects both model and number of responses based on query difficulty, cutting costs by up to 60% with <1% performance drop. From the paper:https://arxiv.org/abs/2506.22716

RouterArena: An open framework for evaluating LLM routers with standardized datasets, metrics, an automated framework, and a live leaderboard.

The minimal interpretable model router that learns & adapts to your agent workflows

[NeurIPS'25] The official code implementation for paper "R2R: Efficiently Navigating Divergent Reasoning Paths with Small-Large Model Token Routing"

An open, programmable decision layer for models and compute.

Route every prompt to the best LLM — for you specifically.

A curated list of awesome works in Routing LLMs paradigm (👉 Welcome to submit your contributions to this code repository)