Model Router Python Packages

rosetta-llm

Multi-format LLM proxy — translates OpenAI Chat, OpenAI Responses & Anthropic Messages. Works as a Claude Code LLM gateway with full model picker support.

llm-routing

Universal LLM router for AI coding tools. Works with Claude Code, Cursor, Codex, Gemini CLI, Copilot and more. Free-first fallback chain cuts costs 35-80%.

claude-code-llm-router

Universal LLM router for AI coding tools. Works with Claude Code, Cursor, Codex, Gemini CLI, Copilot and more. Free-first fallback chain cuts costs 35-80%.

opencode-llmstack

Cursor-Auto / Claude-tier-style serving for local GGUF models on Mac (M4 Max, 64 GB). FastAPI router fronts llama-swap + llama.cpp, classifying each request into a coder, planner, or uncensored-planner tier. OpenAI-compatible API, opencode integration, per-project subshell, one `llmstack` console-script.

argrouter

LLM router: picks the model and reasoning effort per query from accuracy and real billed cost.

thriftllm

LLM router: picks the model and reasoning effort per query from accuracy and real billed cost.

langchain-model-router

In-process model routing for LangChain: a chat model that picks one of several candidate chat models per request.

ninjachat

Official TypeScript and Python SDKs for the NinjaChat API

fugusashi

Fugusashi — Federated Learning of LLM Routing with Human-Interpretable Decisions. Open-source alternative to Sakana AI Fugu.