6 live offers

Inference APIs

Hosted open-model inference — Together, Fireworks, Groq, Cerebras, DeepInfra, OpenRouter and the long tail.

3 offers

OpenRouter lists open and partner models at $0 per token; request caps depend on how many credits you have bought.

Anyone with an OpenRouter account
20 req/min - 50 req/day (1,000/day after $10 purchased)
Catch: Free models change often and have tight caps. The daily limit goes up only if you buy credits ($10 or more). Free-model providers can log prompts, so check each model's data policy before sending sensitive data.

$0 models, 50 req/day (1,000 with $10 top-up)

build.nvidia.com offers free API access to hosted models for prototyping once you join the NVIDIA Developer Program.

Anyone with a verified NVIDIA account
Catch: Prototyping use only: free-tier calls are rate-limited per model and by current traffic. NVIDIA does not publish one fixed limit and moderators say limits cannot be raised on the free tier (users report roughly 40 requests/min). Production needs paid or self-hosted NIM. Account verification (possibly including a phone number) may be required.

Free API, rate-limited

SambaNova's free tier applies when no payment method is linked: 20 requests/min, 20 requests/day and 200K tokens/day per model.

Anyone with a SambaNova Cloud account and no linked payment method
20 RPM - 20 req/day - 200K tokens/day
Catch: Very small daily request cap. The plans page also describes the Free plan as 'add a payment method and purchase credits', so the rules may differ from the rate-limit docs; check your account's Limits page. Not for production.

20 req/day free