Built-in models, quota and windows
Pix Smart and Pix Fast, the models your plan includes. How calls are routed across the models behind each, your allowance and its windows, and how hosts learn which models they can use.
Your plan includes two model labels:
| Label | For |
|---|---|
Pix Smart (pix-smart) |
Harder work: coding, planning, review, images |
Pix Fast (pix-fast) |
Quick work |
You only ever see the label. Behind each, Vulnetix ranks up to five Workers AI models. Every call is routed across them by recent performance: answers, refusals and speed. If the first is struggling, the call goes to the next. Model ids never appear in your console, sessions or errors.
Allowance and windows
Each tenant has an allowance of built-in tokens a month. The window is the UTC calendar month: it starts at 00:00 UTC on the 1st and resets at 00:00 UTC on the 1st of the next month. Refused and failed calls do not count. When the allowance runs out, the factory does what onAllowanceExhausted says: fall back to your own keys, pause, or buy a top-up. See Model routing.
The factory’s share of the allowance is budget.factory_share (75%), and pix.reservePercent (20%) is kept for your own sessions.
Hosts
The Belai build in a Pix Sandbox carries a built-in provider that offers Pix Smart and Pix Fast, so its sessions can pick either like any provider. Pix Smart takes image input; Pix Fast does not.