How credits work
Your plan comes with three separate allowances. They measure different things, and they are spent at different moments. This page explains what each one is for and why interviews are metered by two of them at once.
| Allowance | What it measures | Spent when |
|---|---|---|
| Interview minutes | Time spent in a mock interview | The clock runs during a session |
| MQP credits | How much the AI actually had to think | Every message you exchange with the interviewer |
| Practice credits | Individually graded practice answers | You submit an answer and ask for a grade |
1. Practice credits
Practice credits are for questions you answer on your own, outside a mock interview. You write an answer, submit it, and our AI grades it against the reference solution and gives you written feedback. One graded answer costs one practice credit.
Only graded answers cost anything. Reading a question, opening a solution, or browsing the bank is free. Programmatically checked answers, where no AI grading is needed, are coming soon and will not cost a credit.
2. Interview minutes and MQP credits
A mock interview is metered two ways at once, and the two are deliberately independent.
Interview minutes cap how long you can spend in sessions. The clock runs while the interview is live, exactly as you would expect.
MQP credits cap how much thinking the AI does on your behalf. Every message you send and every reply you get consumes tokens, and tokens cost us real money. MQP credits are how we measure that cost.
3. Why two limits instead of one
If we only counted minutes, someone could sit in a session firing messages at the assistant as fast as they can type, and cost many times what a normal candidate costs in the same half hour. Charging everyone for that behaviour would mean pricing every plan for the heaviest user.
If we only counted tokens, a slow, thoughtful interview would look cheap on paper while still occupying a real session. Neither number alone describes what actually happened.
Two limits keep the plans priced for how people really use them. Use the assistant the way you would use an interviewer in the room: think before you speak, ask when you are genuinely stuck, and your MQP credits will comfortably outlast your minutes.
4. What happens when one runs out
The limits are enforced separately, and whichever runs out first stops that activity. If your MQP credits reach zero, the session ends even with minutes left on the clock. If your minutes reach zero, you cannot start a new session even with credits to spare.
All three allowances reset at the start of each billing period. Unused amounts do not roll over, with one exception: when you upgrade mid-period, the interview minutes you had not yet used are carried across to your new plan as bonus minutes on top of the new allowance.