UnoRouter
UnoRouter is a unified AI API gateway that exposes one OpenAI-compatible endpoint for more than 330 models across 47+ providers. It offers both a hosted API and a web-based chat client, allowing users to programmatically call models or interact with them directly in the browser. The service includes a mix of free and pay-per-use models, with credits that never expire, and supports automatic failover between providers to increase reliability. UnoRouter is designed to work as a drop-in replacement for OpenAI's API. Developers can point existing code, CLI tools, coding agents, and AI chat clients to api.unorouter.com with a single API key and immediately access models from many providers. It also supports multiple integration categories, including coding agents, character/fiction clients, chat clients, and terminal tools, plus a built-in character chat engine with SillyTavern card import. The platform provides a live inspector/tester, model rankings, and usage metrics. It positions itself as a fast and simple solution for individuals and small teams, with no credit card required to start. While not self-hosted, it offers convenience and broad model access through a single unified interface.
- Category
- Dev Tools
- Pricing
- Free
Problem solved
Using AI models usually means managing separate API keys, integrations, and billing for each provider. UnoRouter solves this by providing a single OpenAI-compatible API key that routes requests to 331+ models from 47+ providers, with automatic failover and unified credit-based billing.
Use cases
- Prototyping AI features with free models without a credit card
- Switching models in OpenAI-compatible applications without changing code
- Building multi-provider AI agents with automatic failover
- Connecting character/fiction chat clients like SillyTavern to many models
- Using coding agents and CLI tools with one API key
- Comparing model quality through built-in rankings and chat
Audience
- Developers
- ML Engineers
- Data Scientists
- Hobbyists
- Startups
Pros
- Single API key for 331+ models from 47+ providers
- Fully OpenAI-compatible, so existing code works with minimal changes
- Large selection of free models and no credit card required to start
- Automatic failover increases availability
- Built-in chat client with character chat support
Cons
- Paid models require credit top-up or subscription
- Cloud-hosted service depends on upstream providers
- No offline or on-premise deployment option
- Users must trust a third-party gateway with prompts and API traffic
Official website: https://unorouter.com/
Canonical LambdaBase page: https://www.lambdabase.com/tools/unorouter