OpenRouter
Recurring free tier
50+ models
No card required
One key, free open-source models, no card.
| Detail | Information |
|---|---|
| Models | 50+ models |
| Free quota | several free models |
| Payment card needed? | No |
| Tier type | Recurring free tier |
| Signup URL | https://openrouter.ai |
| Last verified | August 2026 |
How to get started
2
Create an API key
Generate a key in the provider console and save it somewhere safe.
3
Call it
Use the key with any OpenAI/Anthropic-compatible client, pointing at the provider endpoint.
Free tier limits change frequently — confirm the current quota on the provider's own page before relying on it.
Successful API requests are billed at the displayed token rates, metered to a fraction of a cent. Charges accumulate and are deducted from your prepaid balance in whole US cents, so a small request is not rounded up to a minimum charge.