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A+Octo the study octopus
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★★★★★Used by 50,000+ college students

Use AI to actually learn it — not to cheat your way past it.

AI chat, flashcards, and practice tests — built from your own slides, PDFs, and lecture recordings.

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Watch it expose your gaps — then delete them.

Explore what Eightball can do

app.eightball.ai/practice Cell division · 3 questions
Biology 101Cellular respiration quiz
14:30
Question 11/3
Multiple choice1 / 3

Which molecule is the final electron acceptor in aerobic respiration?

Questions

Answered0 / 3
1 / 3

Practice tests

Exam-style practice tests that match your class

Generate unlimited quizzes from your own course content, so you practice the exact material your professor is most likely to test — not random questions from the web.

  • Questions drawn straight from your lectures
  • Every explanation cites the slide it came from
  • Timed exam mode to rehearse test day
app.eightball.ai/chat Asking Octo about 🧬 Biology 101
Asking Octo about 🧬 Biology 101

What should Octo help with?

Pick a spell below or ask in your own words.

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Chat

Chat with your files — and trust the answer

Ask anything about your notes, slides, or recordings and get an instant answer grounded in your own materials, with a citation showing exactly where it came from.

  • Answers only from the files you upload
  • Inline citations to the page, slide or timestamp
  • No hallucinations — if it is not in your material, it says so
app.eightball.ai/record Recording · Lecture 9
🧬 BIO 101
24:10

Cellular respiration

Octo is listening from your browser tab.

Enter text or type '/' for commands Listening
Octo taking notesOcto is listeningAI notes will appear when it's done processing. Start typing whenever you'd like to add your own.
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Live transcript
transcribing…

Transcription

Record a lecture, get organized notes

Hit record and Eightball turns the whole lecture into clean, structured notes in real time — not a raw transcript, but headings, key points, and definitions you can actually study from.

  • Live notes form as the professor speaks
  • Jump to any moment with linked timestamps
  • Ask follow-up questions about the lecture later

Flashcards

100+ flashcards from your notes in seconds

Drop in a PDF, slide deck, or lecture recording and Eightball builds a complete study deck instantly — pulled straight from your material, never generic internet content.

  • Generated from your own notes, slides & textbooks
  • Every card cites the exact source page
  • Smart spaced-repetition surfaces what you keep missing
app.eightball.ai/flashcards Cellular Respiration · 8 cards
🧬Cellular RespirationBiology 101 · auto-generated
Card 1 of 8
QuestionWhat drives ATP synthase in the electron transport chain?Tap to reveal
AnswerThe proton (H⁺) gradient across the inner mitochondrial membrane. Lecture 9 · slide 31

It helped students learn so well they tried to call it cheating.

Eightball won first place at Emory University's startup competition. The school celebrated it as student innovation — then, months later, tried to expel its founders for building a “cheating tool.”

So they sued, won, and proved what they'd said all along: Eightball was never built to do your work for you. It was built to make you learn.

🏆 1st place · Emory Startup Prize📈 329K+ views on the story

Featured in

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Jason Koebler on X: Students at Emory University built an AI study tool, won grand prize and $10,000 to build it — then the school's Honor Council suspends them for cheating.
Andrew Chen on X: Ok how do I get in touch with these college students so that I can fund them?
Andy Berman on X: I am an Emory alum and I coached the startup prize for Eightball. I voted to award the team $10,000. This is just wrong.

Questions

Do I need to pay to get started?

No, we offer a free trial. You can try all features before deciding to upgrade.

Will it make stuff up like ChatGPT?

No. Eightball only answers from your uploaded materials. Every response shows exactly where it came from — page number, slide, or timestamp.

How do I add my course materials?

Drag and drop PDFs, slides, or recordings. Or connect Canvas to auto-import everything from your classes.

Does my school need to be partnered with you?

No. Eightball works with any school. Just upload your materials and you're ready to go.

MMaya R.
Got an A on my orgo final and I genuinely think Octo carried me 😭
2dReply
♥ 512
SSam
Recorded my whole bio lecture and had clean notes before I even left the room.
4dReply
♥ 902
NNoah
The flashcards pull straight from my professor's notes. that's the cheat code.
3dReply
♥ 312
MMaya R.
Got an A on my orgo final and I genuinely think Octo carried me 😭
2dReply
♥ 512
SSam
Recorded my whole bio lecture and had clean notes before I even left the room.
4dReply
♥ 902
NNoah
The flashcards pull straight from my professor's notes. that's the cheat code.
3dReply
♥ 312
JJordan
Made 100 flashcards from one lecture recording in like 30 seconds. unreal.
1dReply
♥ 3.1k
AAaliyah
Honestly the only study app that uses MY slides and not random internet stuff.
14dReply
♥ 1.5k
BBea
Practice tests felt scarier than the real exam lol. walked in ready.
6dReply
♥ 410
JJordan
Made 100 flashcards from one lecture recording in like 30 seconds. unreal.
1dReply
♥ 3.1k
AAaliyah
Honestly the only study app that uses MY slides and not random internet stuff.
14dReply
♥ 1.5k
BBea
Practice tests felt scarier than the real exam lol. walked in ready.
6dReply
♥ 410
PPriya
The citations are everything. I can actually trust the answers for once.
8dReply
♥ 99
CChris
Asked it a question at 2am and it pointed me to the exact slide. wild.
4dReply
♥ 156
IIris
Octo is the reason I'm passing physics. that's it that's the review ✨
2dReply
♥ 88
PPriya
The citations are everything. I can actually trust the answers for once.
8dReply
♥ 99
CChris
Asked it a question at 2am and it pointed me to the exact slide. wild.
4dReply
♥ 156
IIris
Octo is the reason I'm passing physics. that's it that's the review ✨
2dReply
♥ 88
DDevon
I stopped re-reading 200 pages the night before. practice tests fixed me.
7dReply
♥ 233
LLena
Went from a C to an A- in calc 2 this semester. not even exaggerating.
9dReply
♥ 144
TTariq
Uploaded my syllabus and it just… knew my whole class. love it here.
5dReply
♥ 36
DDevon
I stopped re-reading 200 pages the night before. practice tests fixed me.
7dReply
♥ 233
LLena
Went from a C to an A- in calc 2 this semester. not even exaggerating.
9dReply
♥ 144
TTariq
Uploaded my syllabus and it just… knew my whole class. love it here.
5dReply
♥ 36

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