An AI SAT tutor that talks you through every step
Lumi explains out loud, draws on the board, asks you to try, and stops the moment you have a question. Any time of day.
How a lesson with Lumi works
Short turns, like a good tutor: she teaches one idea, then hands it to you.
Explains
One idea at a time, out loud, using the lesson's own example.
Draws
Sketches the steps and graphs on the board as she talks.
Asks you
Every point ends with a question you answer in your own words.
Adjusts
Right answer, she moves on. A slip, she gives a hint and lets you retry.
Talk to her like a tutor
- Cut in any time with a question
- Ask for another example
- Ask her to slow down
- Switch between English and Vietnamese
AI tutor or human tutor?
Both help. They are good at different things, and they cost very different amounts.
Cost per hour of tutoring
Lumi
$4.90
Monthly Premium, all 600 voice minutes used
Human SAT tutor
$35 to $200
Typical US rates, from marketplaces to test prep companies
Prices outside Vietnam
| Lumi (AI) | Human SAT tutor | |
|---|---|---|
| Price | $49 a month with Premium | $35 to $200 |
| Hours of tutoring | Up to 10 hours a month | Paid by the hour |
| When | Any time, day or night | At booked times |
| Booking | Start in seconds | Schedule in advance |
| Talks you through it | Yes | Yes |
| Works on a board | Yes | Yes |
| Repeats as often as you need | YesAlways | YesWithin the session |
| Reads your mood and motivation | NoOnly from what you say | YesA real strength |
| College application advice | NoSAT only | YesOften |
Which one fits
Pick Lumi if you want daily practice with someone to explain each step, on your schedule and budget.
Pick a human tutor if you need someone to keep you accountable, or help with essays and applications beyond the SAT. Many students use both.
Questions
What is an AI SAT tutor?
A tutor run by AI instead of a person. Lumi teaches SAT Math and Reading and Writing lessons by voice: she explains, draws on a board, asks you questions and responds to your answers.
How much does Lumi cost?
You can try Lumi with 30 free voice minutes. Premium is $49 a month and includes 600 voice minutes with Lumi every month, plus every AI tool.
Can an AI tutor replace a human SAT tutor?
For explaining questions and daily practice, often yes, and at a fraction of the price. A human tutor is still better at keeping you accountable and at advice beyond the SAT, like essays and applications.
Does Lumi speak Vietnamese?
Yes. Lumi teaches in English or Vietnamese and switches when you ask her to.
Can I interrupt Lumi?
Yes. Speak up any time and she stops to answer your question, then carries on from where you were.
