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If the reservation fails because the wallet has insufficient balance, an API client receives 402 with insufficient_credits.

Failed generation voids the reservation.

API equivalents

Cost resolution

Usage cost follows the selected model's published rate and the event's token counts. When an event supplies an explicit supported cost, that value is used. A small minimum charge may apply when no catalog rate matches.

See LLM usage.

Remaining usage in the app

The app sidebar shows one billing prompt at a time. While more than half of the included credit remains, it shows the referral invite. At 50% remaining or less, or when no referral is available, it shows the plan card with a remaining-usage meter and an upgrade action.