Best AI study tools

Decision table

The 5 tools on the same fields

Gemini Notebook

• Best for: Students who already have notes, slides and readings and want study material built from them.
• Main limitation: It is only as good as the sources you add; it will not teach a topic you have no material for.
• Price or plan limits: Free tier allows 100 notebooks and 50 sources per notebook; Google AI Plus raises that to 200 and 100, and AI Pro to 500 and 300.
• Data and age terms: Google says uploads are not used for training unless you give feedback; the browser version is open to users above the age of consent in their country.

Gemini Notebook's free plan allows 50 sources per notebook, according to Google's Gemini Notebook plans help page checked 17 October 2026.

ChatGPT study mode

• Best for: Working through math, science and reading problems with hints, questions and knowledge checks.
• Main limitation: OpenAI's study mode help article says it can still give a direct answer and that it is not available in Temporary Chats, GPTs or Projects.
• Price or plan limits: Study mode is on every plan, including Free, and uses the same message and rate limits as normal chat. ChatGPT Plus costs $20 per month, billed monthly only.
• Data and age terms: The OpenAI terms of use set a minimum age of 13 and require parent or guardian permission under 18; you can opt out of model training.

ChatGPT study mode is available on every plan, and Plus costs $20 per month, according to OpenAI's help center checked 17 October 2026.

Gemini Guided Learning

• Best for: College students who want a tutor mode plus quiz and flashcard generation in the main Gemini app.
• Main limitation: Google's learning tools help page says the OpenStax textbook features are US and English only and closed to users under 18 or on school accounts.
• Price or plan limits: The free tier includes Guided Learning. The Gemini subscriptions page lists AI Plus at $4.99 and AI Pro at $19.99 per month (US prices).
• Student offer: The Gemini for Students page offers AI Pro free for one year to eligible US college students aged 18 and over, redeemable until 31 December 2026, then $19.99 per month unless cancelled.

Google AI Pro is free for one year to eligible US college students aged 18 and over, per Google's Gemini for Students page checked 17 October 2026.

Quizlet

• Best for: Memorizing terms, definitions and diagrams with flashcards, Learn mode and practice tests.
• Main limitation: Ask Quizlet, its AI study assistant, is limited to US users aged 14 and over, and chat history resets when you leave it.
• Price or plan limits: The Quizlet Plus upgrade page lists $19.99 per year. Ask Quizlet accepts up to 3 files at a time, with a 25 MB cap per file on mobile.
• Study method: Learn mode, included with Plus, builds a personalized study path.

Quizlet Plus costs $19.99 per year, according to Quizlet's upgrade page checked 17 October 2026.

Khanmigo

• Best for: Middle and high school learners who need a tutor tied to Khan Academy content, with a parent watching.
• Main limitation: Learner and parent plans require a billing address in the 50 US states or the District of Columbia.
• Price or plan limits: The Khanmigo pricing page lists $4 per month or $44 per year for learners and for families, plus sales tax; teacher tools are free.
• Age and oversight: Khan Academy's Khanmigo sign-up requirements say you must be 18 or have a parent or guardian sign you up; the family plan shows children's chat history and moderation alerts.

Khanmigo costs $4 per month or $44 per year for learners and families, according to Khan Academy's Khanmigo pricing page checked 17 October 2026.

Academic integrity and what the research says

The biggest risk with AI study tools is not cheating detection. It is learning less. A field experiment with nearly 1,000 high school math students, published in PNAS in 2025 by Bastani and colleagues, compared a plain chatbot with a tutor version built to give hints instead of answers. The PNAS study record reports that the plain chatbot raised practice scores by 48 percent, but once access was removed those students scored 17 percent lower than students who never had it. The hint-based tutor raised practice scores by 127 percent and largely avoided the drop.

Use study mode, Guided Learning or Khanmigo for practice, and close the tool before you test yourself. For graded work, your school's academic integrity policy and your instructor's syllabus decide what is allowed. If a course allows AI, keep a note of what you used and how, and check any sources a tool cites with our guide to checking AI citations.

Age limits and student data

ChatGPT accepts users from 13 with parent permission under 18. Ask Quizlet starts at 14 and only in the US. Khanmigo requires an adult or a parent sign-up. The Gemini student offer is limited to US college students aged 18 and over, and some Gemini learning features are closed to under 18s. Gemini Notebook in the browser is open above the age of consent in your country.

On data, Google states that Gemini Notebook uploads are not used for training unless you send feedback, and that Workspace for Education users are never reviewed by humans. OpenAI lets you opt out of training in settings. Before you upload class material that includes classmates' names or graded feedback, run through our AI tool privacy checklist.

How to choose

1. List the job: memorizing terms, understanding concepts, or turning notes into review material.
2. Check the age and region rules above against your own situation.
3. Upload one week of notes to Gemini Notebook and generate flashcards and a quiz.
4. Take one homework problem to ChatGPT study mode or Gemini Guided Learning and ask for hints only.
5. After a week, close the tools and quiz yourself cold. Keep the tool whose practice carried over.
6. Pay only when you hit a limit. Our breakdown of when free AI plans are enough helps with that call.

If your main material is long PDFs, compare our PDF chat tool rankings, and for quick reading summaries see the best AI summarizers.

How we rank

We compared each tool on study features (flashcards, quizzes, tutor modes, source grounding), free tier limits, paid plan prices, student offers, minimum ages, regional limits and data training terms. Every price and limit comes from the vendor's own pricing, help or terms page as listed on 17 October 2026, and prices are in US dollars. Teachers choosing tools for a class should also read our AI tools for educators page. Our full method is on the how we rank page.

Frequently asked questions

Is Gemini Notebook free for students? Yes, the free tier includes 100 notebooks and 50 sources per notebook. Eligible US college students aged 18 and over can also claim Google AI Pro free for one year, which raises the source limit to 300 per notebook.

Is ChatGPT study mode free? Yes, study mode is available on every ChatGPT plan, including Free. It uses the same message limits as normal chat, so heavy users may hit caps that ChatGPT Plus at $20 per month raises.

How much does Quizlet Plus cost in 2026? Quizlet Plus costs $19.99 per year on Quizlet's upgrade page as of 17 October 2026. It includes Learn mode and ad-free studying.

Can a 13 year old use AI study tools? Yes, but only some of them. ChatGPT allows users from 13 with parent permission, Khanmigo works through a parent account, and Ask Quizlet requires users to be 14 or older.

Will my teacher allow AI study tools? It depends on your school and your instructor, so read the course syllabus and your school's academic integrity policy.

Do AI study tools actually help you learn? They help when they make you do the thinking. The 2025 PNAS study found students using a plain chatbot scored 17 percent lower once it was removed, while a hint-based tutor largely avoided that drop.

Does Gemini Notebook train on my uploaded notes? No, not by default. Google says your data is not used to train Gemini Notebook unless you send feedback, and Workspace for Education uploads are not reviewed by humans.

Is Khanmigo worth $4 a month? Yes, for younger learners who need oversight. The family plan shows parents their children's chat history and moderation alerts.