ChatGPT vs Claude vs Gemini for learning: study modes, voice and reading in October 2026
Each of the three big chatbots launched a learning mode in 2025, and fourteen months later only Gemini's is still where it was put. ChatGPT's left the menu in April and came back behind a typed shortcut. The help article for the Claude feature that held its Learning mode now returns "Uh oh. That page doesn't exist." For an adult learning something hard, the one you already pay for is enough. They differ most in voice and in how much of a long PDF the free plan can read. I have tested only ChatGPT. I have run no tests of Claude or Gemini, and what I say about them rests on their makers' own pages.
I build Understand, a voice tutor for adults, so I have a stake in this comparison. My ChatGPT tests are written up in my Study Mode review. Everything about the other two comes from Anthropic's and Google's help centres and pricing pages, which I read on October 4, 2026, and from tests other people published. These products change monthly, so treat every limit below as true on that date.
ChatGPT vs Claude vs Gemini for learning, in one table
| ChatGPT | Claude | Gemini | |
|---|---|---|---|
| Learning mode | Study mode, typed as @study, on every plan | Learning mode, described on the page for universities; no help page for the consumer setting | Guided Learning, under More tools, for any signed-in account |
| How it is built | Instructions on the normal model | Launched as a style, which is a set of instructions | On LearnLM, models fine-tuned for learning |
| Voice | Web, iOS, Android; 3 hours per 24 on Plus | Beta on every plan, on phone, desktop and web | Gemini Live, in the phone and tablet apps only |
| A document in voice | Cannot reach your Library; a file "may" attach by hand | Help page silent on files | Help page silent on files; takes camera and screen |
| A PDF in text | 512 MB a file; pictures inside it discarded outside Enterprise | 1,000 pages; figures read up to 100 pages | 100 MB a file; 32k-token window without a plan |
| Memory you can inspect | A summary you can correct | A list of topics you can edit or delete | Ask it in chat; delete chats to remove |
| Free plan | Unlimited text chats; 3 file uploads a day; limited voice | Voice, memory, 5 projects; Sonnet and Haiku models | Guided Learning, quizzes, flashcards; standard limits |
| Paid | Go $8, Plus $20, Pro from $100 | Pro $20, Max from $100 | AI Plus $4.99, AI Pro $19.99, Ultra from $99.99 |
| Published learning trial | None | None | One, run by Google |
Learning modes: ChatGPT study mode, Claude's Learning mode, Gemini Guided Learning
ChatGPT's study mode is on every plan and every model. OpenAI's launch post says it "is powered by custom system instructions", so it is the ordinary model told to ask questions and give hints. The help page lists as a limitation that "there may be times when it gives a direct answer". When I asked it to solve a quadratic, it gave me the roots on my second "just give me the answer". It has grown study tools since: quizzes in August 2026 and flashcards in September.
Anthropic introduced Learning mode on April 2, 2025 as part of Claude for Education, where it works inside Projects and asks "How would you approach this problem?" before it solves anything. On August 14, 2025 Engadget reported that every Claude.ai user would find "a new option within the style dropdown menu titled 'Learning.'" Styles have since been retired. Adam Davidson wrote in How-To Geek on June 2, 2026 that Anthropic was "removing the styles feature from Claude and migrating all current styles to skills". Anthropic's personalization page now lists instructions, project instructions and skills, and no styles.
Anthropic's page for universities still says "Claude's learning mode works like a good tutor: it asks questions that help you find the answers yourself." I found no help article that tells a person on a Free or Pro plan how to turn it on today, and I have not opened the app to look. Project instructions exist to "define roles or perspectives Claude should adopt within the project", and a sentence such as "ask me one question at a time and do not give me the answer" fits there. I have not tested how well Claude holds to it.
Gemini's Guided Learning sits where it launched on August 6, 2025: gemini.google.com, Add files, More tools, Guided Learning. The help page asks only that you be signed in. Google's announcement describes "probing and open-ended questions" and answers with "images, diagrams, videos and interactive quizzes". Google also claims something the other two do not. Its team "found that simply improving prompting wasn't enough", and built LearnLM, "a family of models fine-tuned for learning".
Voice: ChatGPT voice, Claude voice mode and Gemini Live
ChatGPT Voice is the most thoroughly documented. Its Live option "can listen and speak at the same time", so you can interrupt it. Plus gets 3 hours in a rolling 24-hour period, the $100 Pro tier 15 hours, and Free gets "limited access" to a smaller model. The page is plain about documents: "Live cannot currently find or add files from your ChatGPT Library. You may still be able to attach a supported file to the chat manually, depending on your account." The study mode page mentions voice only as dictation.
Claude voice mode is "a beta feature available to all plans (Free, Pro, Max, Team, and Enterprise)" on phones, the desktop app and the web. It counts against your normal usage limits. It runs on the same models as text chat, and you can move between typing and talking in one conversation, where "your previous context carries over". The page says nothing about uploaded files. Under safety it says Claude "is designed to generate original responses rather than reproduce text exactly", which is the opposite of reading you a paper.
Gemini Live needs the Gemini app on a phone or tablet. The page says "for now, Gemini Live isn't available in the Gemini web app". It names no paid plan. You can interrupt it, show it your camera and share your screen, which is one way to put a page in front of it. The page does not mention uploaded files, and it does not say whether Guided Learning runs inside Live.
So none of the three companies documents a learning mode that works in a spoken conversation, and none documents reading a text aloud to you word for word. My one first-hand observation is from ChatGPT. I asked its voice mode how much of an article it could see, and it said a high-level summary, or the first few sentences.
Reading a PDF or a long article
Claude's upload page allows PDFs of up to 1,000 pages. It "analyzes both text and visual elements" in PDFs of 100 pages or fewer and reads text only above that. Anthropic's pricing page shows a context window of "up to 1M" tokens, varying by model, in the column for every plan including Free. A help page puts the largest window on paid plans, so I would not count on it without paying.
ChatGPT's file page allows 512 MB and 2 million tokens per file. Outside Enterprise it "will extract digital text from the file and discard any images". In my test on a Plus account, study mode quoted section 3.2.1 of "Attention Is All You Need" word for word from an uploaded PDF.
Gemini's limit is the one a free user will hit. Google's limits page gives accounts without a plan a context window of 32,000 tokens, AI Plus 128,000 and AI Pro a million. Its upload page says a million tokens is "up to 1,500 pages of text". By Google's own ratio the free window holds about 48 pages. Past the window, the same page warns, answers may "miss connections or details throughout the content".
The only published side-by-side I found of the three modes on a document is Daniel Nest's, from August 21, 2025. He uploaded a research paper and typed "Explain this research paper to me." ChatGPT and Claude each summarised it at once. Gemini "gives me the gist and then proposes a step-by-step exploration". All three have changed models since. For reading a hard text without any of them, there is Adler's method.
Memory across sessions
ChatGPT's memory draws on saved memories and past chats, and it "does not retain every detail from every conversation". You can correct a summary of it. In my test a new study-mode chat quoted the mistake I had made the day before, found by searching my chat history.
Claude's memory is on the Free plan too, and it is the easiest to inspect. "Everything Claude remembers is listed under Topics", where you can read, edit or delete each one. It can also search past chats and cites the ones it used.
Gemini remembers past chats for adults on personal accounts. To check, Google suggests asking "Did you use any info from past chats?" To delete something it knows, you delete every chat that contains it. The page lists Live chats among the features where memory is not available.
All three remember facts about you. None of the pages describes a record of what you have learned, such as the ideas you explained correctly. OpenAI listed "goal setting and progress tracking across conversations" as future work in July 2025, and its help page still describes none.
Free tiers and prices
ChatGPT Free has unlimited text chats, with limits on uploads, voice and memory. Go is $8 a month and "may include ads", Plus is $20, and Pro starts at $100.
Claude Free includes voice mode, memory, web search and up to five projects, on the Sonnet and Haiku models. Pro is $20 a month, or $200 for a year, and adds the Opus models. Max starts at $100.
Gemini without a plan gets Guided Learning, quizzes, flashcards and all three of its model tiers, under "standard limits" that refresh every five hours. Google AI Plus is $4.99 a month for twice those limits, AI Pro $19.99 for four times, and Ultra starts at $99.99.
Evidence that any of them teaches
Nobody has published a trial that compares the three for learning. I searched for one and found tests by raters and reviewers, and no measured outcomes.
The study this blog leans on is Bastani and colleagues in PNAS. Nearly a thousand high school students in Turkey practised maths with GPT-4. A plain chat interface raised practice scores 48% and left them 17% below the control group on the exam without it. A version given the teachers' hints raised practice 127% and left the exam level with the control group. It tested none of the three learning modes. I go through the rest of that literature in the post on cognitive debt.
Google is the only one of the three with a trial of its own mode. In a pre-registered study in Sierra Leone, students whose teachers used Guided Learning in class gained 0.258 standard deviations in maths over eight weeks. Teachers designed the lessons, and Google reports that students who started with stronger maths gained most. An adult alone with the app is a different case.
Google also ran the only head-to-head. In its "arena for learning", 189 educators role-played learners in blind pairs of conversations and 206 experts judged them. Leaving out ties, they preferred Gemini 2.5 Pro in 73.2% of match-ups against Claude 3.7 Sonnet, GPT-4o and o3. Google ran it, I read only the abstract, and every model in it has been replaced.
Chase DiBenedetto of Mashable tested all three modes in September 2025 with real exam questions. She preferred Gemini for maths and called Claude "the only AI tutor that actually did what it promised", with sessions that had "no end in sight". ChatGPT "would frequently give the answers, unprompted".
Anthropic has published how students use Claude. Its education report analysed 574,740 student conversations and found that about 47% sought "answers or content with minimal engagement". OpenAI promised "a deeper analysis" of study mode at launch, and I could not find one.
Claude vs ChatGPT vs Gemini for learning, by kind of learner
If you already pay for one of them, stay. Type @study, or pick Guided Learning, or write the instruction into a Claude project. The gap between the three is smaller than the gap between asking for answers and asking to be questioned.
A visual subject and no budget point to Gemini, whose diagrams, videos and quizzes are free. Paste long readings in pieces, or pay $4.99.
For learning by talking on a walk, ChatGPT documents the most, and Claude's voice also runs in a browser. Neither promises its learning mode there.
A 300-page PDF goes to Claude, whose limits are the highest on paper. Its topic list is also the clearest view of what an assistant believes about you.
Understand, and my bias
I think of Understand as the better ChatGPT for learning and reading. That is the builder's view.
On learning, it answers directly, and after an idea that is new to you it asks one question that takes the idea to answer. What you say is written to a record of the ideas you have shown you understand, which you can open and correct. The big three document memories about you and no such record.
On reading, it reads a PDF or a saved article aloud word for word, and stops when you ask a question. It answers and resumes at the same sentence. Anthropic's voice page says Claude is built to avoid reproducing text exactly.
The big three do far more. They write and run code, make images, quizzes and flashcards, and run on Android. Claude reads the figures in a PDF, and Gemini Live looks through your camera. Understand has no courses, no problem sets, no spaced repetition and no Android app. It reads only PDFs with real text, and no trial has evaluated it. It is free for now. If one of the three already does what you need, it is enough.
I compare more tutors in the best AI tutors in 2026 and Google's document tool in the Gemini Notebook post. Whether remembering is even the right goal is the subject of how to remember what you read.
Questions people ask
Which is best for learning: ChatGPT, Claude or Gemini?
No trial has compared them. Gemini has the only learning mode with a published study, Claude the highest PDF limits, and ChatGPT the most fully documented voice.
Does Claude have a learning mode?
Anthropic's page for universities describes one. The consumer version launched in August 2025 as a style, styles have been retired, and I found no current help page for it.
Does Claude voice mode work on the free plan?
Yes. Anthropic lists it as a beta on every plan, and it counts against your usage limits.
Is Gemini Live free?
Google's help page names no paid plan. It requires the Gemini app on a phone or tablet.