Flint vs. Khanmigo: comparing two AI tutors for schools

Khanmigo is probably the most famous AI tutor in education, and it earned that reputation honestly: Khan Academy was one of OpenAI's earliest education partners, and Sal Khan has done more than almost anyone to make the case that AI tutoring can work. If your school is evaluating AI platforms, Khanmigo belongs on the list.

So does Flint — and the two are less interchangeable than they first appear. The core difference is simple: Khanmigo tutors students inside Khan Academy's curriculum. Flint tutors students inside your curriculum. Almost every other difference flows from that one.

Here's an accurate, detailed comparison to help you decide which fits your school.

The short version

• Choose Khanmigo if your school already runs on Khan Academy content — especially for math in grades 3-12 — and you want a Socratic tutor woven directly into those exercises, videos, and courses, backed by a district partnership.
• Choose Flint if you want AI tutoring across every subject and grade level, grounded in the materials your teachers actually use — their PDFs, slides, novels, lab manuals, rubrics, and standards — with teachers building custom AI activities and admins seeing every conversation.

What each platform actually is

Khanmigo: an AI tutor built into Khan Academy

Khanmigo, launched in March 2023, is Khan Academy's AI tutor and teaching assistant, built on OpenAI models through Microsoft's Azure OpenAI Service. It's deliberately Socratic — Khan Academy's own marketing says it "doesn't just give answers," it guides students toward finding them. That philosophy is genuinely good pedagogy, and it's one Flint shares.

Khanmigo comes in three flavors:

• Khanmigo for Teachers — free for all US teachers (funded through Microsoft's support since May 2024), with 25+ tools for lesson planning, rubrics, exit tickets, and quiz generation, largely tied to Khan Academy's content library.
• Khanmigo for learners and parents — a consumer subscription at $4/month or $44/year, available in the US only, purchased by an adult (18+) who can enable it for up to 10 child accounts.
• Khan Academy Districts — custom-priced school and district contracts, which is the only way a school can give students Khanmigo tutor access in the classroom. District partnerships cover grades 3-12.

That last point surprises many schools: an individual teacher cannot turn on Khanmigo for their students. The free teacher tier covers teacher tools only; classroom student access requires a district contract (with one exception — Khanmigo Writing Coach, which Khan Academy made free for US teachers to use with students in 2025).

Flint: AI tutoring built around your teachers' curriculum

Flint takes the same Socratic, don't-give-away-the-answer philosophy and applies it to whatever your school actually teaches. Teachers describe an activity — "a 9th-grade persuasive writing workshop," "AP Chemistry polyatomic ion practice," "Spanish speaking practice using this Quizlet vocab list" — and upload their own materials. The AI tutors, quizzes, role-plays, and gives feedback grounded in those materials, prioritizing them over its general knowledge.

Around that core:

• Any subject, any curriculum. English essays, world language speaking practice with ACTFL/CEFR level controls, history simulations, computer science, science labs — not a predefined content library.
• Every grade level. No minimum age; content and language level can be set as low as 1st grade (most schools roll out in grades 3 and up).
• Feedback and grading support. Students get session summaries with hyperlinked evidence of strengths and areas for improvement; teachers attach custom rubrics (AP, IB, 1-4, A-F) and can override any AI-suggested grade.
• Full oversight. Teachers see every student message; administrators see every conversation school-wide, with concerning messages (self-harm, violence, harassment, and similar) automatically flagged for review.
• Built for accuracy. Flint pairs Claude Sonnet 4.6 with a built-in calculator, 2D/3D graphing, translation, and web search — so math gets verified computation and current-events questions get real sources.

Feature comparison

Pricing

Khanmigo is genuinely free for US teachers — for the teacher tools. Getting the tutor in front of students means either a $4/month parent-paid subscription at home (US-only) or a custom-priced Khan Academy Districts contract, which bundles rostering, SSO, analytics, and PD.

Flint is free for up to 80 users, and those users can be students — so a real classroom pilot, with students tutoring against your own curriculum, costs nothing. Paid plans are published openly: $3,000/year for up to 150 users, $4,000 for 250, $6,500 for 500, custom above that. Every paid plan includes SIS/LMS rostering, school-wide analytics, a dedicated customer success manager, and unlimited professional development.

Where Khanmigo is the better fit

Honesty first:

• If Khan Academy is already your supplemental math backbone, Khanmigo adds an AI layer directly inside content your students already use — no new platform to adopt. That integration is something no external tool can replicate.
• If you want a nonprofit partner with a massive content library, Khan Academy's free courses, videos, and mastery practice come with the deal. Khanmigo's tutoring is anchored to that library.
• If parents want an at-home tutor tied to a trusted brand, the $44/year consumer plan is inexpensive and includes parent visibility and moderation alerts.

Where Flint is the better fit

• If your teachers don't teach Khan Academy's curriculum. Most schools don't — they teach their own novels, their own labs, their own AP and IB syllabi, their own faith-based or school-specific materials. Khanmigo can't see any of that unless a student pastes it in. Flint is built around it.
• If you need AI beyond math and K-12 core subjects. Flint handles essay feedback against custom rubrics, world language conversation at a specified proficiency level, historical simulations, coding help, and test prep — in 50+ languages, with speech in 200+ dialects.
• If teachers want to create, not just assign. On Flint, teachers design the AI's behavior: its helpfulness level, its sources, its rubric, its role. On Khanmigo, teachers work within activities Khan Academy has built.
• If you want students included without a district-level procurement. Flint's free tier includes student access for up to 80 users; a single department can pilot with real classes this week.
• If elementary AI matters to you. Flint supports students under 13 (with school consent handled through your technology waiver) and content leveled down to 1st grade.

One more nuance worth knowing: Khan Academy's widely cited efficacy results — like the Newark district gains — measure the Khan Academy platform broadly; Khanmigo-specific outcome studies were still underway as of Khan Academy's late-2024 efficacy report. Meanwhile, the research base for AI tutoring generally continues to grow. Whichever platform you choose, ask vendors what evidence applies to the specific product you're buying.

The bottom line

Khanmigo is the best AI tutor for Khan Academy's curriculum. Flint is an AI tutor for your curriculum — every subject, every grade, every teacher's actual materials — with the oversight, feedback, and customization schools need to run AI as part of real instruction rather than alongside it.

If that's the version of AI tutoring you're looking for, Flint is free for up to 80 users, or book a demo and we'll show you what your teachers could build in an afternoon.