Math videos that

Name any topic. In about a minute, Mathos writes, voices, and animates a full explainer — then changes anything you ask.

Create a video free

✓ Real narrated, animated video — not a slideshow✓ Watch it build itself, live✓ Change anything, live

Editable · try it →1:36

Calculus · Maximize Rectangular Area with Fence

5M+ students · 100M+ problems solved · YC W24 · ★ 4.9

Paste a problem.
Get a lesson.

Describe a concept or paste a problem — Mathos writes, voices, and animates a finished explainer in about a minute.

Mathos · Video

problem figure · attached

Writingthescript

Generate video↑

Optimization · Quadratics

Maximize the fenced area

You've got 300 m of fence and a wall — what's the largest rectangle you can pen in?

0:00 / 0:37

Change anything, live.

Recolor it, move a step, or drag the numbers — the whole lesson re-solves instantly. No rebuild, no round-trip.

Optimization · Quadratics

Maximize the fenced area

You've got 300 m of fence and a wall — what's the largest rectangle you can pen in?

0:00 / 0:37

Click a diagram or curve in the video to edit it · space to play.

General AI guesses at math.

Mathos verifies it.

Parse the math

The prompt becomes a structured, solved plan before a single frame is drawn.

Verify every step

A second pass checks the working — so what you watch is correct, not just plausible.

Render editable

Every equation, label, and beat stays tied to the math — which is what keeps it editable.

Classroom quality

Good enough to put in front of students.

Brings the concept to life

Abstract ideas become animation — a limit converging, a vector rotating — so it clicks the way a wall of text never will.

Explained step by step

A clear narrated walkthrough takes every step in order — building real understanding, not just landing on the answer.

Curriculum-aligned

Built on the curriculum

Every video is tagged to subject, grade, and standard knowledge-point names — so what you ship maps straight to what schools teach.

K–12 standards

College admissions

Advanced Placement

Int'l Baccalaureate

Fast & accurate enough to ship

Lessons in seconds, verified before delivery.

First frame in 5–10 seconds, a full video in under a minute — and dual background agents check the math before anything ships.

First frame

Mathos5–10s

Alternatives1–10 min

Full video

Mathos<60s

Alternativesminutes to hours

	Mathos	Alternatives
Speed	First frame: 5–10s · Full video: <60s	First frame: 1–10 min · Full video: minutes to hours
Accuracy	Dual background agents verify every video	Unverified
Curriculum	Standards-aligned, tagged by subject, grade & knowledge point	None
Editable	Edit any element in plain language	Re-generate from scratch
Integration	API support	Manual / not supported

Who it's for

One engine. Every way you teach.

For teachers & creators

Turn any topic into a lesson

Type a problem or paste a worksheet and get a narrated, animated explainer — ready before class.

For schools & teams

A consistent video library

Generate on-brand explainers across a whole curriculum, with the throughput one creator can't match.

For developers

Generate videos via API

Call the Mathos API to turn your own problem sets into math-explainer videos, at scale.

Proven at scale

100K+

Videos generated

3,000+ hrs

Of video generated

150+

Countries reached

5M+

Learners reached

For teams and developers

Enterprise / API Pilot

$3,990/ month

3,800 generated minutes / month
API access
API documentation & integration Q&A
Usage tracking

Overage: $2.00 / additional generated minute

Request access

Create your first video with Mathos AI

Turn any question into an animated lesson — for a single study session or a whole course library.