BETA
A free tier is a no-cost allowance of API usage or chat access that providers offer to attract developers, usually with strict rate and volume limits.
Free access takes several forms: trial API credits for new accounts, permanently free quotas on smaller models, free consumer chat products, and zero-cost models listed on aggregator platforms. Providers use them to build developer mindshare, and in some cases free usage is subsidized in exchange for the right to train on submitted data — a policy worth checking before sending anything sensitive.
Free tiers carry tight rate limits and are unsuitable for production traffic, but they are ideal for prototyping and for running small evaluations across candidate models before committing.
The practical workflow is to validate feasibility on free access, measure real token consumption, and then project paid costs from those measurements — a projection that frequently reshuffles which model is actually the economical choice at scale.
Last revised 2026-07-05 · All glossary terms → · Live AI model pricing →