AI math tutor for kids: what it can do, what it can't, and free options

An AI math tutor for kids can be a patient practice partner, but only if it makes the child do the thinking. Set up to give hints and ask questions, AI tutors have helped in trials; used as an answer machine, plain chatbots have made later test scores worse. This guide is from Peabody (peabody.kids), a reading and math site that is free through the end of 2026. Peabody has no open chatbot (its one chat is short and screened, for 3rd grade and up), and its math is made and marked by code, not AI. The other tools named here aren't ours, and nobody paid to be listed.

The short version

What is an AI math tutor?

People mean three different things by "AI math tutor":

1. A general chatbot (ChatGPT, Gemini, Claude and so on) that you ask math questions. It was built for adults and will happily solve anything you type.
2. A tutor built for school, such as Khanmigo, which wraps a chatbot in rules meant to stop it handing over answers.
3. Practice software that adapts, picking the next question from how a child answered the last ones. Much of this uses no chatbot at all. Peabody is in this group.

They're very different tools, and the research says different things about each.

What an AI math tutor can do well

• Endless patience. It will explain carrying for the fifth time without a sigh.
• Another way to say it. "Explain 3 × 4 with cookies" often lands when the textbook's wording didn't.
• Quick practice on demand. "Give me five subtraction problems with regrouping" gets you a short practice set in seconds.
• Talking it through. When it asks "how did you get that?", a child has to put their method into words, and that's good practice in itself.

What it can't do

• Know your child. A chatbot doesn't remember last week's misses unless you tell it again.
• See the work. It can't see a child counting on their fingers, guessing, or getting upset.
• Always be right. Chatbots still make arithmetic and reasoning slips, said with full confidence. Check anything that looks off.
• Stop itself giving answers. Even with instructions, many chatbots drift back to solving the problem, especially when a child pushes ("just tell me").

The answer-giving risk, and what the trials show

The clearest warning comes from a 2024 trial in Turkey with about 1,000 high school students. Students who practised with plain GPT-4 did better during practice, then scored 17% worse on a later exam taken without it. A version limited to hints mostly removed that harm. The students had let the chatbot do the thinking.

The trials with good results looked different. A Harvard physics study gave students an AI tutor loaded with expert step-by-step solutions, and the platform enforced one step at a time. A World Bank study in Nigeria had a teacher in the room. And the largest school trial so far, two years in 18 middle schools, found that Khan Academy practice helped a little but the Khanmigo chat layer on top added no measurable benefit; students messaged the tutor in only 17% of sessions.

None of these trials included children under ten. The full comparison, with numbers and links to the papers, is in AI tutors: what the 2024–2026 trials show. The pattern is that structure helps, not chat: a known answer, small steps, hints rather than solutions, and an adult nearby.

What age is an AI math tutor for?

Common Sense Media's age guidance says no AI chatbots for children five and under, limited use beside a parent from six to twelve, and supervised use for homework from thirteen. That matches the research: the evidence is for older students, and for young children the safer choice is structured practice with a grown-up nearby. Check each service's own age rules too, before a child uses it.

How to make a chatbot ask questions instead of giving answers

If you use a general chatbot with your child, use your own account, sit with them, and start every session with a setup message. The point is to flip who does the thinking.

You are a math tutor for a third grader. Never tell me the answer. Ask me one question at a time and wait for my reply. If I'm wrong, give one small hint and ask again. Keep every message under three sentences.

Then try one of these:

1. Check my steps. "I'll solve 46 + 38 and say each step. Tell me which step went wrong, but don't fix it."
2. Make me a mistake to find. "Write a subtraction problem worked out with one mistake. I'll find it."
3. Hint ladder. "I'm stuck on 7 × 8. Give me the smallest possible hint. If I'm still stuck, give a slightly bigger one."
4. Explain it to a beginner. "Pretend you've never heard of fractions. I'll teach you what one half means. Ask confused questions."
5. Same idea, new numbers. "I just got 9 + 6 right by making ten. Give me two more that use the same trick."

Watch for the moment it slips into solving. When it does, say "remember, no answers" or start again. Use AI as a tutor that asks questions has more prompts and the setup in detail.

Two rules that need no app: never type a child's full name, school or photo into a chatbot, and stop after ten minutes or at the first sign of frustration.

Is there a free AI math tutor?

As of October 2026, from the services' own pages:

• Khan Academy is a non-profit with free practice and videos from kindergarten up. No AI needed, and the practice was the part that helped in the trial above.
• Khanmigo, Khan Academy's AI tutor, is free for teachers to sign up for. For families it costs $4 a month or $44 a year, for US residents with a US billing address; a parent aged 18 or over subscribes and can add up to ten children. Khanmigo says it is designed to guide learners rather than hand over answers.
• General chatbots have free tiers, but they're built for adults and will give answers unless you set them up as above.
• Peabody is free through the end of 2026 and needs no sign-up. It isn't a chat tutor (see below).

Where Peabody fits: math made and marked by code

Peabody takes the part of the research that's best supported, a fixed task with a known answer, and leaves out the chat.

• Every problem is made by code from a seed and checked by code. No AI writes or marks a math question, and none decides a child's level. AI is used to write and screen stories, not to tutor.
• A miss gets a worked answer. In the math lessons, a wrong answer brings up the solution step by step, with a picture, and some explanations speak to the exact slip. In an adding lesson, a child who answers 8 + 6 with 4 sees: "Almost! Don't forget the ten. Make a ten. 8 needs 2 more to make 10. Take 2 from the 6, which leaves 4. 10 + 4 = 14." A child who adds when they should take away is told "that's adding. Taking away leaves fewer."
• Harder when right, easier when wrong. Each right answer in a lesson part climbs a step and each miss slips back one, and ten right answers finish a part.
• Three boxes in the games. In the learning games, every answer is one of three boxes, so there's nothing to type.
• Grade pages. Each grade has a page with its lesson parts and the games that ask those facts: kindergarten, 1st grade, 2nd grade, 3rd grade, 4th grade and 5th grade, up to 8th. For times tables, see the multiplication games.

Where Peabody falls short

Peabody can't answer your child's question about tonight's homework sheet. It doesn't answer homework questions, can't read a photo of a worksheet, and only knows the problems it makes itself. It also hasn't been tested in a trial, so nothing here is a claim about what it does to a child's scores. For a specific homework question, a teacher, a grown-up, or a carefully set-up chatbot beside you is the better fit.

A simple plan for this week

1. Ten minutes of practice a day at your child's grade, on Peabody, Khan Academy or paper.
2. One chatbot session at most, if your child is old enough, with the hint-only setup and you beside them.
3. One no-screen game, such as make-ten in the car. Mental math games for kids has a list by age.
4. A story together to finish. Pick one from the library.

Using Peabody in your homeschool

Homeschooling makes "an adult nearby" easy, and that was a condition of the better trials. A week that fits: four days of one Peabody math lesson part at your child's grade, about 10 to 15 minutes, from the math paths, with you beside them to read the worked answer together after a miss. If you use a chatbot at all, make it one short session a week, on your account and beside your child, with the hint-only setup above, on a problem they've already tried on paper. The honest limit: Peabody explains only its own problems, so it can't help with a page from your math book. The free homeschool math plan has the times by age, and the homeschool hub has the rest.

Learn more elsewhere

• Stanford SCALE: the evidence base on AI in K-12: a 2026 review of more than 800 papers; hint-giving tutors did better than answer-giving chatbots.
• Hechinger Report on the Khanmigo trial: a plain-English column on the two-year study.
• Wharton: without guardrails, generative AI can harm education: the Turkey study in plain words.
• Common Sense Media: AI chatbots and your child, by age: what to allow at each age.
• Khanmigo pricing: the current prices for families and teachers.

For more, checked and sorted by who they're for, see where to learn about AI.

Questions parents ask

Is an AI math tutor good for kids?

It can be, when it gives hints and asks questions rather than answers, and a grown-up is nearby. In a 2024 trial, students who practised with a plain chatbot did worse on a later exam without it, while a hint-only version mostly avoided that. For young children the evidence is thin, so keep sessions short and supervised.

What is the best free AI math tutor?

There isn't a clear winner, and no trial has compared them for young children. As of October 2026, Khanmigo is free for teachers and costs families $4 a month in the US, while Khan Academy's own practice is free. A general chatbot's free tier can work if you set it up to give hints only and sit with your child.

Will an AI math tutor just give my child the answers?

General chatbots usually will, unless told not to, and they can drift back to it. Start each session by telling it never to give the answer and to ask one question at a time, and watch for slips. Tutors built for school, such as Khanmigo, are designed to guide rather than answer.

Does Peabody use AI for math?

No. Peabody's math problems are made and marked by code, and a wrong answer in a lesson gets a worked answer with a picture. Peabody uses AI to write and screen stories, and its only chat is a short, screened one for 3rd grade and up that asks more than it tells.

What age can my child use an AI math tutor?

Common Sense Media advises no AI chatbots at five and under, limited use beside a parent from six to twelve, and supervised use for homework from thirteen. Practice software that doesn't chat, used with a grown-up nearby, suits younger children better.

Can an AI tutor replace a math teacher?

No. It can add practice and a patient listener, but it doesn't know your child, can't see their work and can be wrong. The best-supported trial result so far is an AI that helped human tutors do their job better.