What is OpenRouter?
OpenRouter is a unified API that routes requests to 500+ AI models from 80+ providers with one key, fallbacks and usage tracking for developers. It has processed more than 100 trillion tokens, according to its own usage study, and its public model rankings are widely used to see which models developers actually use.
OpenRouter exposes an OpenAI-compatible endpoint, so you can switch between models from OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek and others by changing a model name. It routes around provider outages and rate limits automatically and puts all usage on one bill. It also offers free model variants, a browser chat room for comparing models and bring-your-own-key support. Developers use it to prototype with many models, avoid vendor lock-in and add fallbacks to production apps.
Main Features
- Provides one OpenAI-compatible API for 500+ models.
- Falls back to other providers during outages or rate limits.
- Bills all model usage through one account and key.
- Offers free variants of selected models with daily limits.
- Supports bring-your-own-key for direct provider billing.
- Compares models side by side in a browser chat room.
- Publishes rankings of model usage across the platform.
How to Get Started with OpenRouter
- Sign up at openrouter.ai and create an API key.
- Add credits, or start with a free model.
- Point your OpenAI SDK base URL at OpenRouter.
- Set the model name and send your first request.
OpenRouter Pricing
The Free plan gives access to 25+ free models with a limit of 50 requests per day. Pay-as-you-go Standard charges provider prices with no markup plus a 5.5% platform fee on credit purchases, and Business has an 8% fee with extra features. Bring-your-own-key usage is free up to $25,000 of list-price inference per month, then 5%, and Enterprise gets fee discounts.
Who Should Use It?
- Developers testing many models without separate accounts.
- Startups that want fallbacks between providers.
- Hobbyists experimenting with free models.
- Teams consolidating AI spend on one bill.
- Researchers comparing model quality and cost.
OpenRouter Alternatives
- Replicate: better for running open-source image and video models
- Google AI Studio: free access to Gemini models
- Alibaba Model Studio AI: hosted Qwen and other models from Alibaba Cloud
Frequently Asked Questions
Is OpenRouter free?
Partly. You can use 25+ free models with daily limits, while paid models cost provider prices plus a 5.5% platform fee.
Does OpenRouter mark up model prices?
No. OpenRouter passes through provider pricing and charges a platform fee on credit purchases instead.
Is OpenRouter compatible with the OpenAI SDK?
Yes. OpenRouter exposes an OpenAI-compatible API, so you only change the base URL and model name.
Is OpenRouter safe for production?
Yes, many teams use it in production. Check each provider's data policy in OpenRouter's settings, since requests are processed by the underlying provider.