Pricing and sponsorship

#What do I pay?

Nothing for work on sponsored models. Work on other models costs the model's own price plus 5%. Hosting is separate, at the cloud's own price. No subscription, no charge per AI teammate, no equity. See Pricing.

#Which models are sponsored?

The ones the Foundation's partners sponsor. The list grows as partners join. Your program says which ones you can use, and for how long.

#How do I get sponsored access?

Apply and tell us what you want to build. The Foundation selects people for each program. See Apply for access.

#Does sponsorship cover hosting?

Hosting is separate, at the cloud's own price, unless your program covers it.

#How long does a program last?

Each program sets its own length. You know it before you start.

#What happens when a sponsorship ends?

Your business keeps running. The Model Router keeps using the best model for each task, at the model's own price plus 5%. The record shows which tasks ran on sponsored models.

#Do I need a ChatGPT or Claude subscription?

No. Every model runs through ZB Stack, on one balance.

#Who is behind the Foundation?

The Zero Build Foundation is a nonprofit started by the people behind ZB Stack. AI labs, cloud providers and corporations fund it with models and computing. ZB Stack is the company; it earns 5% on work that is not sponsored, and nothing else. See Sponsored models.