Open-source alternatives to OpenRouter
9 open-source projects that do what OpenRouter does. Picked or featured by Willet; numbers are from GitHub.
Last updated
| Project | What it does | Stars | License | Last commit | Self-hostable |
|---|---|---|---|---|---|
| Self-hosted AI gateway routing coding tools to hundreds of LLM providers | 78.8k | MIT | Yes | ||
| Self-hosted gateway that shares AI subscription quotas via one API | 44.4k | LGPL-3.0 | Yes | ||
| Self-hosted gateway that pools free LLM API tiers behind one endpoint | 38.1k | MIT | Yes | ||
| Local LLM router that feeds coding agents from many AI providers | 31.1k | MIT | Yes | ||
| Self-hosted relay that pools Claude, OpenAI and Gemini subscriptions | 12.7k | MIT | Yes | ||
| Self-hosted gateway pooling Grok accounts behind OpenAI-style APIs | 7.8k | MIT | Yes | ||
| Envoy-based proxy that routes, traces, and guards LLM and agent traffic | 7.1k | Apache-2.0 | Yes | ||
| Prompt-level model router with an OpenAI-compatible endpoint | 5.6k | Apache-2.0 | Yes | ||
| Per-request model routing for AI agents across cheap and capable LLMs | 3.4k | Apache-2.0 | Yes |