LiteLLM
Unified gateway for 100+ LLMs with spend tracking
LiteLLM is a Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI format, with cost tracking, guardrails, loadbalancing and logging. Supports Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM.
Proxed AI
Secure AI API management for iOS apps with DeviceCheck
Proxed.AI is a secure proxy backend for iOS apps that protects your AI API keys and controls AI responses. Uses Apple DeviceCheck to lock down API keys and provides a visual schema builder to structure AI outputs.
Compare OpenRouter alternatives
OpenRouter is a hosted, unified API gateway that routes requests across 300+ LLMs from different providers, billed on a pay-as-you-go basis through OpenRouter's own account and credit system. Teams that want to run that same routing layer on their own infrastructure, or that need built-in spend tracking and budget controls rather than just pass-through billing, look for a self-hosted alternative.
LiteLLM is the closest match — a self-hostable gateway that unifies 100+ LLM providers behind one API, with the option to run it entirely on your own infrastructure instead of routing traffic through a third party.
FAQ
Is there a free, open-source alternative to OpenRouter?
Yes. LiteLLM is open source and free to self-host.
What's the best open-source alternative to OpenRouter?
LiteLLM is the standout option — it unifies 100+ LLM providers behind a single API and can run entirely on your own infrastructure instead of routing through a third-party account.
What are the top open-source alternatives to OpenRouter?
Browse all open-source alternatives to OpenRouter above, or explore the full Developer Tools category for more options.