ChatGPT vs Root Tutor for IB: Which Should You Study With?

Quick answer

• Root Tutor: the all-in-one AI tutor built for the IB by an IB student. It plans your study sessions, teaches the way you think, remembers every subject and gets you ready for every test with examiner-marked practice papers.
• Root remembers your learning, not just facts about you: one tutor per unit, with your past sessions, weak spots and files.
• Root runs the parts ChatGPT leaves to you: check-ups on old units, examiner-marked practice papers and a plan for every study session.
• Neither should write your IA, EE or TOK essay. The IB treats AI-produced work as not your own.
• ChatGPT: fine for quick questions outside your courses, but it starts every chat without your IB subjects.

It's Sunday night. You have a Chemistry HL test on Thursday, an English IA draft due Friday, and a vague sense that you've forgotten most of Year 1 Maths. You open a chat window and type "help me revise". The chat has no idea what you studied, what you got wrong last month, or what else is due this week. You spend twenty minutes explaining your own life to it before you learn anything.

Root Tutor is the better choice for IB students who want to study their courses, not just ask questions. It keeps every subject in one place, remembers your past sessions and weak spots, checks what you still remember, and runs examiner-marked practice papers. ChatGPT is a general assistant: useful for quick answers, but the IB structure is left to you.

Every claim about ChatGPT below comes from OpenAI's own help pages or published research, checked on 10 October 2026.

ChatGPT vs Root Tutor at a glance

The real problem: the IB is six subjects for two years

The IB recommends 150 teaching hours for each Standard Level subject and 240 for each Higher Level one (IB DP curriculum). Add the Extended Essay, TOK and CAS, and the hard part is not understanding one topic tonight. It is keeping forty-odd topics alive across six subjects, deciding what to study each evening, and noticing what has faded before a test finds it for you.

A chat window answers the question you type. It does not know which question you should be asking. That is the gap Root is built to close.

Why temporary chats don't work for the IB

The Diploma is not a course you can revise one topic at a time and then forget. If you came from the MYP, you are used to learning a unit and being assessed on it soon after. In the DP, exams "form the basis of the assessment for most courses" (IB: DP assessment and exams), and you sit them at the end of the two-year course, so what you learn in September of Year 1 is what you are expected to know in May of Year 2.

That is why a pile of separate ChatGPT chats lets you down. Each one is a conversation you have to find again, scroll through and piece back together, and none of them knows what the others covered.

Root works as one study system instead. Every tutor session lives in a unit for that class, with the exact topics you covered, the parts you got stuck on and your notes, files and flashcards. Then the units build on each other:

• Tutor teaches a topic and saves it to the unit, along with your weak spots.
• Revision mode uses those same units to check what you still remember, months later, and shows what is Remembered, Shaky or Not yet.
• Test prep builds practice papers from your units' topics, in your exam's style.
• The Planner plans your study sessions around all of it, so old topics come back before the exam does.

Nothing you learn in Year 1 disappears into an old chat. By May of Year 2, you have two years of organised work to revise from, not two years of chat history.

Where Root Tutor is different

It remembers how you learn, subject by subject

In Root, everything lives in units: one block of a class, holding its tutor chats, topics, files, notes and flashcards. Each unit has its own tutor that remembers your past sessions, your weak spots and your files, so your HL Biology tutor already knows you mixed up transcription and translation last week. Drop in your syllabus, a study sheet or a photo, and Root pulls out the topics.

ChatGPT does have a memory feature, and OpenAI recommends turning it on to get the most from study mode (OpenAI: study mode). But remembering facts about you is not the same as a record of what you've learned and where it went wrong in each subject.

It teaches instead of answering

Tutor works step by step. It asks you to try, finds where your reasoning breaks, and teaches that gap, rather than handing over a finished answer. It won't do your homework for you, because you'll be alone with the paper in May. It double-checks its maths (a wrong sum is re-done before you see it) and draws the diagram or graph when a picture helps.

This matters more than it sounds. In a 2025 PNAS study by Bastani and colleagues, nearly 1,000 high school maths students were given either a standard ChatGPT-style tutor or one with learning guardrails. The standard group did better on practice problems, then scored worse on a later exam without the tool than students who never had it. The guardrailed tutor largely prevented that drop. A 2025 Harvard trial (Kestin et al., Scientific Reports) found the opposite effect for a tutor that gave one step at a time: students learned significantly more in less time than in an active-learning class.

To be fair to ChatGPT, its study mode is OpenAI's answer to this exact problem, and it is free. You still have to remember to switch it on, and it still starts without your courses.

It checks what you still remember

Revision mode keeps every unit you've studied, by class, with search and a month filter. Pick one of four ways to revise (Quick recap, Weak spots, Full review or Your topics) and Root runs a check-up, one question at a time. You finish with a report: Remembered, Shaky, and Not yet (learn these next). One tap sends the gaps to Tutor, which builds a study plan starting with them.

Turn on spaced review for a unit and topics come back on set days after you learn them (3, 7, 16, 35 and 70 days, depending on how often you choose). It is off until you switch it on. Spaced practice and practice testing are the two techniques rated "high utility" in Dunlosky and colleagues' 2013 review of study methods.

It runs practice papers and marks them

Test prep builds a practice paper in your exam's style from your topics, your teacher's material and your exam board, and it gets harder as you go. Every answer is checked by a second solve before you see the paper. You get a timer, a calculator, hints (with a warning you won't have them in the exam) and photos of your working, and the paper is marked like an examiner would, against a mark scheme. Then Root shows your strengths, what needs work and what to study next, and sends that to the tutor and into your plan.

It plans your week

The Planner plans every study session around your classes, free time and busy nights, keeps every subject going each week, and plans the run-up to each test. Homework, projects and assignments sit on the same board, so an IA deadline and a Chemistry test can't ambush each other. Tell it "busy Thursday" and it moves things; you confirm before anything changes.

IA, Extended Essay and TOK: the rules apply to both

The IB will not ban AI tools, but it says it does not regard work produced by them, even in part, as the student's own. Any AI-generated text, image or graph you include must be credited in the body and in the bibliography (IB statement on ChatGPT and AI).

So neither tool should write your coursework. Root won't: it will help you understand the content, test a research question and question your argument. ChatGPT will write paragraphs if you ask, which is exactly the risk. For doing each piece properly, see our guides to IA tips, the Extended Essay and the TOK essay.

Where ChatGPT is the better pick

ChatGPT is broader. For a question with nothing to do with your courses (a university personal statement brainstorm, a coding bug, a recipe), it is the right tool, and its study mode is free on every plan. Root only does school.

Which should you use?

Doing it all with a chatbot means keeping your own records: which topics you've covered in six subjects, which ones you got wrong, when to revisit them, and what to study tonight. Root keeps that for you. Read what Root does, mode by mode, or try it free with no card.

For the other IB tools worth knowing, see our ranking of the best AI tutors for IB and the best apps for IB students. For a general (not IB-specific) comparison, there's ChatGPT vs Root for revision, and everything we've written for IB students is in the complete IB Diploma guide.