How tokens work
Each time you solve a question, a small number of tokens is spent based on how detailed you want the walkthrough to be. No subscription, no monthly fee, no surprise charges.
- Nothing expires. Tokens sit in your account until you use them, and nothing auto-renews.
- Pay for detail, not access. Choose the depth you need before you solve.
- Top up whenever. Payments are handled by Stripe, so we never see your card details.
Buy tokens
New accounts start with 6 free tokens. You're never charged for a request that fails.
Long explanation
Full step-by-step walkthrough with reasoning for every move.
3 tokens
Short and sweet
Concise steps that still show the method.
1.5 tokens
Answer only
Just the final result. Good for checking your own work.
1 token
Check my working
Add your attempt and Nuclei finds the first place it goes wrong.
2 tokens
Explain a step
Get one line explained, or ask your own follow-up.
1 token
Similar question
New practice on the same method. Seeing its solution is free.
1.5 tokens
Worksheet
Photograph a sheet and pick questions. Each then costs its usual price.
1 token to read
Flagged requests
If the model refuses a request for safety reasons, you pay a small fraction as an abuse deterrent.
0.5x the tier
