Teachers
Turn a lecture into a short video students can rewatch — in your own voice.
Math animation,
from idea to explanation.
Drop in a PDF, slides, or notes — or just describe the idea. LemmaReel plans it, animates it, narrates it in English, and hands you a finished MP4. Right here in your browser.
Up to 5 minutesEnglish narration1080p MP4No watermarkAlso: Desktop CLI, no length limitYour own voice
We estimate an allowance from your request and material size. This is your maximum charge; we return unused credits after generation. A video can't be cancelled once it starts; if it fails, it is fully refunded.
Clips from real narrated explainers — examples rendered by LemmaReel, not live user results.
How to turn your material into a math animation
1
Bring your material.
PDF, PPTX, Markdown, text — or just a description.
2
LemmaReel builds it.
Plans, animates, and narrates. Close the tab if you like — it keeps running.
3
Play it and download.
As often as you like. Everything stays in your history.
Transform readable notes, lecture slides, classroom handouts, or a clear written description into an explanatory video right in your browser. Web Studio generates Manim-style programmatic graphics and pairs them with clear English narration to deliver a finished 1080p MP4. You can make the video without writing Python code or installing rendering libraries on your machine.
YOUR VOICE
Narrate in your own voice.
Record a short English paragraph once — about 40 seconds, right in your browser. Then choose your voice for any video, just like a built-in one.
- Read aloud once, reuse it on every video
- 10 extra credits per started minute, with any paid plan
- Delete it any time — the recording goes too
HEAR THE BUILT-IN VOICES
HeartBuilt in · free
BellaBuilt in · free
MichaelBuilt in · free
FenrirBuilt in · free
Made for people who explain things
Researchers
Explain a method or a result from your paper in about a minute.
Creators
Make clear, narrated explainers for courses and client work.
Price
Every plan is credits. One pool, spent only on the videos you actually make. Held when you submit a video, charged on success, released back if it fails or you cancel before it starts.
NO CARD NEEDED
Free
Sign up with Google or GitHub and make your first short video on us.
$0
USD
one-time gift
one-time gift
- 20 credits — up to 2 minutes of video
- Credits never expire
- No credit card needed
- Google or GitHub sign-up only
Sign in with Google or GitHub.
ONE-TIME PACK
Trial
Try web generation with a one-time credit pack. No subscription.
$5
USD
one-time purchase
one-time purchase
- 100 credits — up to 10 minutes of video
- Credits never expire
- Up to 5 minutes per video
- Download as often as you like
Sign in to securely complete your purchase.
CANCEL ANYTIME
Monthly
A fresh 1,000 credits every month for regular video work.
$15
USD
per month
per month
- 1,000 credits each month — up to 100 minutes of video
- Monthly credits do not roll over
- Up to 5 minutes per video
- Keep access through the paid period
Sign in to securely complete your purchase.
2 MONTHS FREE
Yearly
The Monthly allowance for a full year, paid once.
$150
USD
per year
per year
- 1,000 credits released each month — up to 100 minutes of video
- Unused credits do not roll over
- Up to 5 minutes per video
- Same allowance as Monthly, 2 months free
Sign in to securely complete your purchase.
EDUCATION
Teachers
For teachers and lecturers using LemmaReel in class.
1,000
one-time credits
with Yearly plan
with Yearly plan
- 1,000 with Yearly, or 500 with Monthly
- Added once per account, never renews
- Credits never expire
- Apply from your school email
Unused credits are removed if the plan is refunded.
BULK PURCHASE
Schools & teams
For schools, tutoring centers and teams.
Custom
volume
pricing
pricing
- Credits for every teacher or member
- Lower price per credit on larger orders
- We add credits to each person’s account
- One payment for the whole group
Tell us how many people will use it.
Not sure which fits? Email support@lemmareel.com and tell us how many people will use it. How buying for a group works →
10 credits per started minute of the finished video with DeepSeek (default), 25 with Claude Sonnet 5.5 (more accurate on technical topics; minimum 2 minutes, 50 credits), capped at the “Up to” quote you confirm. Length follows your content, up to five minutes. Unused credits are returned; revisions use the same rule. Narration in your own cloned voice adds 10 credits per started minute, within the same “Up to” quote. Full pricing →
For power usersRegular price $199$49Save $150 · launch price
Prefer to render on your own computer?
LemmaReel CLI is a separate one-time purchase. Your own AI agent — Codex, Claude Code, or Gemini CLI — writes the storyboard, and the CLI renders locally with no length limit.
USD
one-time purchase
one-time purchase
macOS or Linux · one active computer · sold separately from web plans
# Connect once. Then just ask.
lemmareel init --agent codex --project ./my-videoYOU
“Use my notes to explain this idea.
Keep it clear, visual, and under a minute.”
Your agent handles the steps.
output/my-video.mp4
output/my-video.mp4
CLI works with Codex✳ Claude Code Gemini CLI
Questions, answered
What it costs, what it needs, and how your material is handled.
Still have a question? Email support@lemmareel.com
- 1Can I generate an animation directly in this browser?
- Yes. Describe the idea or upload your material, and LemmaReel builds the video on our servers — up to five minutes each. Credits are charged only when a video succeeds.
- 2Is this a subscription?
- The web version runs on credits: 20 free credits when you sign up with Google or GitHub, then a one-time Trial pack, or a Monthly or Yearly plan. The Desktop CLI is still a one-time purchase, sold separately, with no length limit.
- 3Do I need my own AI agent?
- Not for the web version. For the CLI, yes — it works with Codex, Claude Code, or Gemini CLI, which write the storyboard on your machine.
- 4What can I give it?
- A readable PDF, PPTX, Markdown, or text file — or a clear description. There is no OCR yet: scanned files without selectable text fail clearly, and nothing is charged.
- 5Which computers are supported?
- The web version works in any modern browser. The CLI build is verified on Apple Silicon Macs; run lemmareel doctor to check what’s missing.
- 6Where does the rendering happen?
- Web videos render on LemmaReel’s servers; your files live in private storage only you can access. CLI videos render on your own computer, and your chosen agent may send source content to its model provider.
- 7How are the videos made?
- Scenes are programmatic animations rendered with Manim Community, an open-source engine for explanatory math videos. The built-in English voices are synthesized with Kokoro-82M, an open-weight text-to-speech model. Automatic checks verify the rendered file, not whether a mathematical or statistical conclusion is correct.
- 8Can I use the videos in my work?
- Yes. Your own courses, presentations, and client videos are intended uses. You remain responsible for the rights to the material you provide. No LemmaReel watermark is added.
- 9What happens if a video fails?
- Held credits go straight back to the batch they came from. Failed videos are never charged, and you can try again with a new request. You can cancel a video while it waits to start; once generation starts it can’t be cancelled.
- 10Can the narration use my own voice?
- Yes, with any paid plan (the Trial pack is $5). In Studio, open Voice, choose Record your voice, and read a short English paragraph aloud — about 40 seconds. Videos in your voice cost 10 extra credits per started minute.
- 11What happens to my voice recording?
- Your recording is used only to narrate your videos. We keep it in private storage and send it to our voice provider each time it narrates a video in your voice, under the provider’s own privacy terms. Delete the voice any time in Studio or Settings, and we delete the recording. Deleting your account does the same.