NOVA · AI Tutor
Free AI tutor · 501(c)(3) nonprofit
Ask NOVA anything about AI.
NOVA explains, asks you questions and quizzes you, out loud or on screen, at the level that fits you.
- Answers grounded in 3,000 free guides
- Type or talk, in 40 languages
- No account, no ads, no paywall
NOVA · online
What would you like to understand?
Start anywhere. I’ll meet you at your level, explain unfamiliar words, and help you build real understanding—not just memorize an answer.
Or start with a question
Or take a guided lesson
Meet NOVA
A free AI tutor you can talk to
NOVA is AI Understanding's AI tutor. Ask about anything in AI, from how ChatGPT works to what a token is or how to write a better prompt, and NOVA explains it in plain language, out loud and on screen, in your language.
- 3,000free guides behind NOVA’s answers
- 40languages, with the whole deck translated
- 3ways to learn: Explain, Socratic and Practice
- 4levels, from Kid to Expert
- $0No account, no ads, no paywall
One question, three ways to learn
Explain makes an idea clear. Socratic asks you questions so you reason it out yourself. Practice gives you exercises until it sticks.
What is a token?
A token is a small chunk of text: a short word, part of a longer word, or a punctuation mark. Language models read and write in tokens rather than letters, so a long word like “unbelievable” may be split into a few pieces.
Tokens matter because every model can only handle a limited number at once, and many AI services charge by the token. Quick check: why might a very long document not fit into one chat?
Everything a great tutor does
Grounded in 3,000 guides
NOVA answers from AI Understanding's own library of 3,000 guides and shows which ones it used, so you can read further or take the full quiz.
Quiz me, instantly
Tap Quiz me after any answer for a multiple-choice question about what you just learned. Pick an answer, see why, and keep going as the questions get harder.
Talk, don't type
Tap Voice mode and just speak. NOVA answers out loud, lights up each word as it says it, then listens for your next question.
Pitched at your level
Choose Kid, Beginner, Comfortable or Expert. NOVA changes its words and depth to match, from playground analogies to the maths under the hood.
40 languages
Switch the site language and NOVA answers in it, with the whole deck translated. In most languages NOVA also speaks the answer aloud.
Private by design
Your conversation is saved in your own browser, not in our learner database. Sign in only if you want it on your other devices too.
A hologram you can play with
Up to 480,000 particles and a glowing neural core whose synapses fire while NOVA thinks. Drag it a full 360°, scroll to zoom, dive inside the face, scatter it into a nebula, or change its colour.
How learning with NOVA works
Ask
Type a question, tap a starter, or turn on Voice mode and say it.
Understand
NOVA explains in plain language, with examples, and points you to a guide when one helps.
Apply
Ask for a real-world example, switch to Practice, or let NOVA quiz you.
Bring NOVA to your classroom
A free, ready-to-teach lesson has students question NOVA, then fact-check its answers against the guides it cites. Classroom mode needs no logins and starts with the voice off.
NOVA is free because people chip in.
NOVA is free for everyone, with no account needed. It is built by AI Understanding, a 501(c)(3) nonprofit funded by donations.
Questions about NOVA
Is NOVA free?
Yes. NOVA is free to use and you don't need an account. It is run by AI Understanding, a 501(c)(3) nonprofit supported by donations.
What can I ask NOVA?
Anything about artificial intelligence: how ChatGPT and other large language models work, machine learning basics, writing better prompts, choosing AI tools, and AI safety and ethics. If you ask about something else, NOVA answers briefly and brings you back to learning about AI.
Can NOVA quiz me?
Yes. After any answer, tap Quiz me and NOVA writes a multiple-choice question about what you just covered. Choose an answer to see whether you were right and why, then ask for the next one, which gets a little harder each time. NOVA keeps your score for the session.
Where do NOVA's answers come from?
NOVA runs on large language models chosen by AI Understanding, and every answer is grounded in the most relevant of the 3,000 guides in our free library. The guides it used are listed under the answer so you can check them and read more.
Is NOVA a real person?
No. NOVA is an AI tutor that runs on large language models chosen by AI Understanding. Like any AI, it can make mistakes, so check important information.
How do I talk to NOVA with my voice?
Tap Voice mode under the hologram and speak. NOVA answers out loud and in writing, then listens again, so you can keep the conversation going hands-free. Tap the button again to stop. Voice input works in browsers with speech recognition, such as Chrome, Edge and Safari.
Which languages does NOVA speak?
NOVA answers in all 40 of the site's languages. Choose your language from the flag in the menu. In most of them NOVA also reads its answers aloud; where a voice isn't available, your browser's own voice is used if it has one.
What happens to my conversation?
The messages needed to answer you are sent to the AI provider that powers NOVA. AI Understanding does not store raw tutor conversations in its learner database; your chat is kept in your browser until you clear it.
Your first question is one tap away.
Prefer to read? Start with our free AI guides, test yourself with AI quizzes, or earn the free AI certificate.