Turn a 90-Minute Lecture into a 5-Minute Read

Drop in a lecture PDF, an audio recording, or a YouTube video and our AI lecture summarizer pulls out the TL;DR, the key concepts, and the action items — then turns them into flashcards, a quiz, and a podcast.

Free to start · No credit card · PDFs, audio, video, slides

Used by 170,000+ learners and professionals worldwide

170,000+
Learners and professionals
70+
Languages
Minutes
Per summary
AI-generated study notes open in the Scholarly editor, organised into headings and bullet points

How it works

How to summarize a lecture in minutes

Three steps from a 90-minute class to a summary you can actually read on the bus.

  1. 01

    Upload or paste

    Drop in a lecture PDF, an audio file, a YouTube link, or your own AI Meeting Notes source. Scholarly handles every common format.

  2. 02

    AI structures the summary

    Within minutes you get a TL;DR, a key-concept table, the worked examples your professor used, and the action items they assigned.

  3. 03

    Loop into active recall

    Convert the summary into flashcards, a quiz, or a practice exam with one click — and revise instead of just re-reading.

Features

A summary that's actually useful

Most AI summarizers spit out a wall of bullet points. Scholarly produces a structured study artifact you can revise from.

Structured, not a blob

Every summary is split into TL;DR, key concepts, worked examples, and action items — a navigable artifact, not a wall of text.

PDFs, audio, video, slides

Lecture PDFs, MP3/M4A recordings, YouTube videos, and slide decks all work. Mix and match across a single class.

Concept tables, not bullet lists

Comparison tables for paired concepts (SN1 vs SN2, mitosis vs meiosis), so the structure of the lecture stays intact.

Live audio + AI Meeting Notes

Pair with Scholarly's AI Meeting Notes app to capture live class audio and get a summary the moment the lecture ends.

YouTube and online lectures

Paste a YouTube URL for a free AI Meeting Notes source and get the same structured summary you'd get from a PDF.

Drives the rest of your study

Same lecture becomes spaced-repetition flashcards, a practice exam, and a multi-speaker podcast — one upload, full review loop.

Sample output

Sample summary output

A real summary structure from a 75-minute orgo lecture on SN1 vs SN2 reactions.

Organic Chemistry · Lecture 8

TL;DR

SN1 and SN2 are two nucleophilic substitution mechanisms. SN2 is concerted, one-step, second-order, and favored by strong nucleophiles and unhindered substrates. SN1 is stepwise via a carbocation, first-order, and favored by polar protic solvents and stable carbocations (tertiary > secondary > primary).

Key Concepts

ConceptSN1SN2
Rate lawFirst-orderSecond-order
SubstrateTertiary > 2° > 1°Methyl > 1° > 2°
StereochemistryRacemizationInversion (Walden)
SolventPolar proticPolar aprotic

Action Items

  • Memorize the SN1/SN2 decision tree (slide 14)
  • Practice problems 4.7-4.12 from the textbook before next lecture
  • Review Walden inversion mechanism — appears on Friday's quiz

Why it matters

Why summarize your lectures with AI?

To summarize a lecture recording with AI, upload the audio (MP3, M4A, WAV) — or a lecture PDF, a YouTube link, or slides — and Scholarly's AI lecture summarizer returns a structured summary: a one-paragraph TL;DR, a key-concept table, the worked examples your professor used, and the action items they assigned. It reads your actual recording rather than improvising, then turns the same source into flashcards, a quiz, and a podcast in one click.

A 90-minute lecture is built for delivery, not for review. Re-watching it to find the one concept you're stuck on is a brutal use of time. A good lecture summary is the bridge — it gives you a navigable map of the class so you can jump straight to the section you actually need to re-read, instead of scrubbing a recording or flipping through 60 pages of slides.

The trick is that summarizing well is hard. A list of bullet points loses the argument. A pure transcript wastes your time. Scholarly's AI lecture summarizer organizes the class the way a strong note-taker would: a one-paragraph TL;DR, a table of key concepts with definitions, the worked examples the professor used, and a list of action items the lecture explicitly assigned.

Because Scholarly understands lectures across formats — a PDF deck, an audio file from your phone, a YouTube link, or live audio captured by the AI Meeting Notes — you can summarize anything you sat through. And because every summary lives next to your flashcards, study notes, and practice exams, you don't stop at "read the summary." You drill on it.

This is the part most summarizers miss: a summary is only useful if it loops back into active recall. Scholarly turns the same lecture into spaced-repetition flashcards and a practice test — so reading the summary is the start of revision, not the end of it.

Comparison

Scholarly vs. Mindgrasp for lecture summaries

Mindgrasp built its reputation on lecture summarization and does it well. Here's an honest comparison.

Mindgrasp

Where it shines: a polished, fast summarizer with a long track record in the student space and strong integrations with Google Drive and YouTube.

Good at producing clean summary text from PDFs, audio, and video — a solid choice if a summary is all you need.

The follow-through is thinner: limited flashcard support, no full practice-exam generator, no multi-speaker podcast format from the same source.

Pricing model is subscription-only after a short trial — no permanent free tier.

Best for students
Scholarly

Where it shines: the summary is the start of a full review loop — flashcards, quiz, podcast, and chat tutor all share the same source.

Structured output by default: TL;DR, key-concept table, worked examples, action items — not just a paragraph blob.

Same upload becomes a spaced-repetition deck and a graded practice exam — active recall, not just reading.

Permanent free tier with included AI creations; Premium unlocks longer sources and higher generation limits.

FAQ

Lecture summarizer — frequently asked questions

How does the AI lecture summarizer work?

Upload a lecture PDF, an audio recording, a YouTube link, or a slide deck. Scholarly processes the source, extracts the structure of the lecture, and returns a summary with a TL;DR, a key-concept table, worked examples, and action items — usually within a couple of minutes.

Can I summarize a lecture PDF for free?

Yes. You can summarize lecture PDFs free with a Scholarly account — no credit card required to start. Free accounts include free AI creation credits; Premium unlocks longer sources and higher generation limits.

What inputs does it accept?

Lecture PDFs (including slide decks exported as PDF), MP3 and M4A audio recordings, YouTube video links, MP4 video files, and live audio captured by Scholarly's AI Meeting Notes. You can mix multiple sources into one summary — e.g., the slides plus your recorded audio.

How is this different from Mindgrasp?

Mindgrasp is a solid summarizer. The main difference is follow-through: Scholarly turns the same lecture into spaced-repetition flashcards, a full practice exam, and a multi-speaker study podcast — all from the same upload. If you want a summary that loops back into active recall, that's where Scholarly's design diverges.

How accurate is the summary?

Summaries are anchored to your uploaded source — Scholarly extracts what's actually in the lecture rather than improvising. As with any AI tool, review the output against the original. Most students treat the summary as a navigable map of the class and re-read the source when a section matters.

Can I export the summary?

Yes. Summaries can be exported as PDF or copied as Markdown. There is no CSV export of the key-concept table; to move the concepts into Anki, generate flashcards from the same source and export the deck as an Anki .apkg file on a paid plan.

Does it work for non-English lectures?

Yes. The summarizer handles audio and PDFs in dozens of languages, and you can choose the output language separately from the input — so a Spanish lecture can return an English summary, or vice versa.

Can I summarize a YouTube lecture?

Yes. Paste a YouTube URL and Scholarly will pull the transcript and generate a structured summary. This works for educational channels, open-courseware lectures, and conference talks.

How do I summarize a lecture recording?

Upload your audio recording (MP3, M4A, WAV, WebM, or OGG) — or record the class live with Scholarly's AI Meeting Notes. The AI transcribes it, then summarizes the recording into a TL;DR, a key-concept table, worked examples, and action items, usually within a couple of minutes. From there you can convert the same recording into flashcards or a practice exam.

Pricing

Summarize your next lecture

Upload a lecture, get a structured summary, and turn it into a full review loop. Free to start.

Free

See what it does with one of your own sources.

$0

/month

Free forever

No card required.

  • 3 lifetime AI Chat messages

  • 1 free AI creation total

  • 2-minute podcasts and video lectures

  • 1 free file upload total (8MB)

  • 5 lifetime quiz questions

  • 1 completed practice exam total

  • 15 lifetime voice minutes

  • 32-page PDF to flashcards

  • 500 lifetime autocomplete words

Use it to generate flashcards, improve a deck, or create a podcast, video lecture, slides, infographic, mind map, study guide, worksheet, spreadsheet, story book, timeline, SOP, flowchart, lesson plan, or outline — or run Deep Research or turn a recording into AI Meeting Notes.

Premium

Most Popular

Steady weekly output from the material you already have.

$12

/month

Billed yearly at $144 · save $216

  • Everything in Free, plus:

  • 10 AI creations per week

  • Unlimited AI chat & autocomplete

  • Podcasts up to 60 minutes, videos up to 45 minutes

  • Unlimited file uploads (up to 300MB)

  • Unlimited study sessions

  • Unlimited exams & quizzes

  • 1000-page PDF to flashcards

  • Export to Anki

  • Priority support

Laureate

For work where being right matters more than the price.

$99

/month

billed monthly · cancel anytime

For frontier models & 8x more AI Creations

Our most advanced and most expensive tier.

  • Everything in Premium, plus:

  • 80 weighted AI creation credits every week

  • 80 AI creations per week

  • Podcasts up to 60 minutes, videos up to 45 minutes

  • Unlimited uploads up to 1 GB, plus 3,000-page PDFs

  • 12 hours of voice mode per day

  • Priority support and early access to new Frontier models

Pricing shown in USD by default. Local currency may be available in app or at checkout.

Compare plans

AI chat

Premium and Laureate include unlimited AI chat. GPT 5.6 Sol and Claude Opus 5 are reserved for credit-metered AI creations.

Free
3 total
Premium
Unlimited
Laureate
Unlimited

AI creations

AI creations share one credit balance across every creation tool. Standard models use 1 credit; Frontier models Sol and Opus use 3.

Free
1 total
Premium
10/week
Laureate
80/week

Podcast length

Free episodes are fixed at 2 minutes. Paid plans can set a target length up to 60 minutes.

Free
2 minutes
Premium
Up to 60 minutes
Laureate
Up to 60 minutes

Video lecture length

Free lectures with a length control are fixed at 2 minutes. Paid plans can set a target up to 45 minutes. Short uses its own short video format.

Free
2 minutes
Premium
Up to 45 minutes
Laureate
Up to 45 minutes

File uploads

Free
1 total (8MB)
Premium
Unlimited (300MB)
Laureate
Unlimited (1 GB each)

PDF to flashcards

Free
32 pages
Premium
1000 pages
Laureate
3000 pages

Practice questions

Free
5 total
Premium
Unlimited
Laureate
Unlimited

Practice exams

Free
1 total
Premium
Unlimited
Laureate
Unlimited

Voice mode

Free
15 min total
Premium
2 hr/day
Laureate
12 hr/day

Autocomplete

Free
500 words total
Premium
Unlimited
Laureate
Unlimited

Export to Anki

Free
Premium
Included
Laureate
Included

Support

Free
Standard
Premium
Priority
Laureate
Priority

What customers say

Scholarly has enhanced the quality of notes and questions I administer to my tutees. Insightful, to the point.

TD Georgas

TD Georgas

Tutor

I have very good experience with Scholarly it summarize me scientific text in hovel academic level with citation. I use this for any therapeutic area . It is great and useful tool.

Diana

Diana

Scholarly user

Scholarly has been a valuable tool for my studies. The AI-generated flashcards and intuitive features make organizing and retaining information much easier.

Briana

Briana

Scholarly user

This app is great for studying for big test. Drop your PDF's in the system and it'll do the trick. You can organize it specifically for your needs.

Kelvin

Kelvin

Scholarly user

Your questions, answered

Is Scholarly free to use?

Yes! The free plan includes core study tools with lifetime allowances: 3 AI Chat messages, 500 autocomplete words, 5 quiz questions, 15 voice minutes, 1 practice exam, one free AI creation total, and 1 file upload. These allowances do not reset. Upgrade to Premium for 10 AI creations per week and unlimited uploads.

What uses my free AI creations?

Generating flashcards, improving a flashcard deck, making a podcast, creating a video lecture or infographic, building slides, a spreadsheet, or a story book, making a mind map, study guide, or worksheet, having an AI Agent create a timeline, SOP, flowchart, lesson plan, or outline, running Deep Research, or processing a recording uses your free AI creation. It is a lifetime free credit and does not reset. AI Chat, autocomplete, quiz practice, voice, exams, and file uploads have separate lifetime allowances.

Can I cancel anytime?

Absolutely. There are no contracts or commitments. You can cancel your subscription at any time from your account settings, and you'll keep access until the end of your billing period.

What payment methods do you accept?

We accept all major credit and debit cards through Stripe. Pricing is displayed in USD by default, but local currency is available in the app.

Can I use Scholarly with a class or school?

Yes. For a school or organization-wide rollout, contact us at hello@scholarly.so and we'll help you find the right setup.

What happens when I hit a free plan limit?

You'll see a prompt to upgrade. Your existing work is never lost — limits only apply to new actions. Free-plan allowances are lifetime credits and do not reset. Premium includes 10 AI creations per week, podcasts up to 60 minutes, video lectures up to 45 minutes, unlimited uploads, chat, autocomplete, quizzes, and exams, plus more daily voice time.