Auto Free
Send an API request with no deposit, balance, or money hold. Your charge is always $0. Auto Free never falls back to a paid model, even after you add credits.
minirouter/auto:free$0 customer chargeTemporarily unavailable
Try checking again later. If no free model is available, your request will fail without a charge or a switch to a paid model.
curl https://api.minirouter.sh/v1/chat/completions \
-H "Authorization: Bearer $MINIROUTER_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"minirouter/auto:free","messages":[{"role":"user","content":"Explain an API gateway in one sentence."}],"max_tokens":256}'What Auto Free selects
Auto Free selects poolside/laguna-s-2.1-free. Naming it directly uses the same free path and account allowance. Another model’s name or $0 catalog price does not imply the same contract.
Account quotas reset daily and are shared across keys. Supported request shapes work with Chat Completions, Responses, and Messages, including streaming. See the guide for limits and request caps.
Choose the right starting point
Auto Free is the no-deposit API alias and signed-in playground. The chat trial is a separate three-message browser offer, subject to availability. Paid Auto uses credits; bare minirouter/auto still means Smart.