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Pricing
Buckets built for students
Free to start. Pay a little for a lot of AI help — priced to stay affordable.
What is a bucket? →Live rates — prices below convert automatically. Billing is in USD.
Every bucket also unlocks storage and premium features →
Calculator
How much would you use?
Estimate your Zen usage and see which bucket covers it.
0
credits needed / week
$0.00
estimated real cost / week
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bucket suggestion
Estimates use average token counts per message. Your actual usage may vary.
Under the hood
Zen AI — models & token pricing
Every Zen version, its provider model, and what each chat costs in credits.
| Model | Runs on | Credits / chat | Cost per 1M tokens | Speed | Context |
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Start free today
Every student gets free credits to begin — grab a bucket only when you need more.