Machine Learning API

OpenRouter

Unified API for 300+ LLMs from OpenAI, Anthropic, Meta, Mistral and more, with a free tier

Catalog facts

Authentication
apiKeyNeeds an API key, usually issued after you create an account with the provider.
HTTPS
YesServed over HTTPS, so traffic to the API is encrypted.
CORS
YesBrowser code on other websites can call it directly.

AI model API, checked by ApiWall

Provider
OpenRouter
Models
Routes to models from several providers (the quickstart names OpenAI GPT and Anthropic Claude models)
Authentication
Bearer API key in the Authorization header
API host
openrouter.ai/api/v1
Docs checked
openrouter.ai on October 17, 2026
Free tier
Not verified. Check the provider's pricing page.

Access and pricing

ApiWall has not verified pricing, free access or usage terms for this API. A listing here does not mean it is free, available or safe to call. Check the provider's current terms.

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