Fair. Honest. No answer buttons.
Free is enough to build the habit. Paid is honest about the cost of inference. That's the whole story.
Free
Build the habit.
- Learn mode (Socratic tutor)
- 15 tutor messages / day
- 3 recall reviews / day
- Explain-back grading (5 / day)
- Weekly Brain score
- Image attempts (soon)
- Efficiency mode
- Voice attempts (soon)
- Study group mode (soon)
- Priority support
Student
For serious semesters.
- Everything in Free
- Unlimited tutor messages
- Unlimited recall reviews
- Unlimited explain-back grading
- Efficiency mode (normal AI)
- Unlimited image attempts (soon)
- Voice attempts (soon)
- Study group mode (soon)
- Shareable OG score card
- Priority support
Parent
Up to three kids.
- Everything in Student
- 3 student sub-accounts
- Parent dashboard (effort only)
- Weekly digest email
- Family billing
- Content-blind by design
- Priority family support
Prices in USD. Cancel any time from the customer portal. No dark-pattern trials, no auto-annual upgrades, no cards saved without asking.
What actually changes between tiers.
No feature flags dressed up as tiers. Every difference here is a resource line item on our side.
| line item | free | student | parent |
|---|---|---|---|
| Tutor messages | 15 / day | unlimited | unlimited × 3 |
| Recall reviews | 3 / day | unlimited | unlimited × 3 |
| Explain-back grading | 5 / day | unlimited | unlimited × 3 |
| Efficiency mode (normal AI) | — | included | included × 3 |
| Image attempts | 5 / day | unlimited | unlimited × 3 |
| Voice attempts | — | included | included |
| Study group mode | — | included | included |
| Parent dashboard (effort-only) | — | — | included |
| OG score share card | — | included | included |
| Priority support | — | included | included |
the money math
We aren’t venture-subsidized below cost.
Every tutor turn is a real Sonnet API call and a real Haiku guard call. We prompt-cache aggressively and route intelligently — that’s why $12/mo works. It’s not free. It shouldn’t be. Anything that costs nothing gets treated like it’s worth nothing.
one student · one month · rough envelope
- tutor messages~400sonnet 4.6
- output-guard checks~400haiku 4.5
- explain-back grading~60haiku 4.5
- cache hit rate~85%
- gross inference cost~$4.10
- priced at$12· margin ↑
Rough — real usage varies. But the shape is honest.
Pricing FAQ
Yes — one click from the customer portal. You keep access through the end of your billing period.
pick your tier later
Get on the waitlist first.
Beta seats open in waves. Pricing kicks in only after you've had two weeks of the free tier and decided you want more.