The best AI tools for learning a new topic in 2026

If you have a topic and nothing else, start with a tool that researches it and gives you an order to learn it in, such as Gregator. For one specific question, Perplexity gives a fast answer with citations. For a tutor that questions you, ChatGPT study mode and Gemini Guided Learning both work on free plans, and once you have your own reading, Gemini Notebook (formerly NotebookLM) is the strongest tool to study it.

Disclosure: Gregator is our product. We put it where we think it fits, and we say where other tools do the job better.

Quick picks

Learn a topic from scratch, with sources: Gregator
Get a fast, cited answer to one question: Perplexity
One assistant for everything, with a study mode: ChatGPT
A free step-by-step tutor with diagrams and video: Gemini Guided Learning
Study a reading list or notes you already have: Gemini Notebook (NotebookLM)
A quick course with videos, at a low price per course: Brainmunk
Learn with your own documents and email in the loop: Claude

How we chose

We looked at what a person needs in the first weeks of a new subject:

Structure. Does the tool give you an order to learn things in, or only answers?
Sources. Can you see where a claim comes from and open the page?
Practice. Are there quizzes or questions that check what you know?
Continuity. Can you come back tomorrow and pick up where you stopped?
Price. What the free plan gives you and what paid plans cost.

We read each product's official pricing and help pages in October 2026 and list only what those pages say. We did not give the tools one overall score, because the best tool depends on what you bring to it: a bare topic, a question, or a pile of reading.

The best tools, by use case

Gregator: best for learning a topic from scratch with sources

Gregator turns a topic into a course. It plans 1 to 12 Chapters sized to the topic, researches the open web across seven search providers including arXiv and Wikipedia, and writes each Chapter from its 7 most relevant sources, with a cap on domain and perspective so one site does not dominate. Chapters run about 700 to 1,200 words, use inline footnotes, and end with key takeaways and a Sources list.

Strengths: a course you read in order; a trust overview that shows the mix of source types behind the course; up to 5 quiz questions per Chapter plus a final quiz, where a wrong answer links back to the section; Greg, a tutor that has read your Chapters and can add a deep-dive Chapter; progress tracking and suggestions for what to learn next.
Limits: English-first. No uploads of your own files. No PDF export, only Markdown. No native mobile app; it runs as an installable web app. Narration needs a paid plan.
Pricing (as of October 2026): Free for 3 courses in total. Starter $9.99/month for 5 courses a month. Pro $19.99/month for 20.

Perplexity: best for a fast, cited answer

Perplexity is an answer engine. On a new topic, it settles the small questions that come up while you read: what a term means, who a name is, what a number refers to. Its pricing page says every answer carries citations, including on the Free plan. Pro adds a Research mode for in-depth reports and raises the limited Free allowance for uploads of documents, audio, video, and images.

Strengths: speed; the cited links are a quick way to find your first good pages on a subject; work over your own files on paid plans.
Limits: ten questions give you ten answers in a thread, but no order to learn them in. Its pages do not describe quizzes or progress tracking, so nothing tells you what you still do not know.
Pricing (as of October 2026): Free; Pro $17/month billed annually; Max $167/month billed annually.

See Gregator vs Perplexity.

ChatGPT: best all-round assistant with a study mode

ChatGPT's study mode is on every plan, including Free. For the continuity a new subject needs, OpenAI says its lessons remember past sessions and track your progress, and they adjust to your level as you go. It teaches with questions and hints, then checks you with quizzes and open-ended questions. Deep research writes longer, source-based reports.

Strengths: you can come back tomorrow and continue; the same app also helps with the writing, coding, or voice practice a topic may need; file uploads; apps on web, iOS, and Android.
Limits: on a bare topic, you decide what to cover and in what order. You build the reading list yourself, or ask deep research for a report, which is limited on Free.
Pricing (as of October 2026): Free; Go $8/month; Plus $20/month; Pro from $100/month.

See Gregator vs ChatGPT.

Gemini Guided Learning: best free tutor with visuals

Guided Learning is a mode in the Gemini app, and it suits the first concept in a new subject that does not click. Google says it breaks problems down step by step and asks open-ended questions. A Google blog post describes it checking your understanding after each concept and drawing on diagrams, images, and YouTube videos. The app also makes quizzes, flashcards, and study guides on request.

Strengths: free with a Google account; a picture or a video often helps more than a paragraph when a field is new to you.
Limits: Google's Guided Learning pages do not describe citations for each answer. It is a conversation, not a saved course, so the map of the subject stays in your head.
Pricing (as of October 2026): Free; Google AI Plus $4.99/month, Pro $19.99/month, and Ultra from $99.99/month raise limits (US prices).

See Gregator vs Gemini.

Gemini Notebook (NotebookLM): best once you have sources

Google renamed NotebookLM to Gemini Notebook in July 2026. It is the tool for the second stage of a new topic, when you have collected reading and want to work through it. It takes sources you add: PDFs, Google Docs, slides, web pages, YouTube videos, audio, and more. Deep Research can browse the web for you, and you choose which results to import. From your notebook it makes Audio Overviews in more than 80 languages, Video Overviews, flashcards, and quizzes.

Strengths: the best tool on this list for studying material you already have; audio summaries to review a subject away from a screen; many languages.
Limits: on day one you may not know what to read, and you assemble the sources yourself. It does not plan a curriculum from a bare topic.
Pricing (as of October 2026): Free with a Google account; higher limits on Google AI plans.

See Gregator vs NotebookLM.

Brainmunk: best for quick courses with videos

Brainmunk also turns a topic into a course from web research, with cited sources, curated YouTube videos inside lessons, and quizzes. You set your experience level, and its homepage says the course is calibrated to it.

Strengths: videos in each lesson; a level setting; 10 courses a month on its paid plan, twice Gregator Starter's 5 for the same price.
Limits: its homepage does not describe source ratings or narration. Its chat is capped at 5 questions a month on Free and 50 on Premium.
Pricing (as of October 2026): Free for 3 courses; Premium $9.99/month for 10 courses a month.

See Gregator vs Brainmunk.

Claude: best when your own documents matter

Claude is a general assistant. It fits a new topic that you learn for your job, where half the context sits in your own documents and email. Paid plans add Research, which runs a series of searches across the web and connected tools such as Gmail and Google Docs. Anthropic's education page also describes a learning mode that "works like a good tutor: it asks questions that help you find the answers yourself."

Strengths: research that can read your workspace next to the web; memory across chats, so you can return to a topic; strong writing and analysis.
Limits: Research needs a paid plan. As with ChatGPT, you create the structure of the subject yourself.
Pricing (as of October 2026): Free; Pro $20/month, or $17/month billed annually; Max from $100/month.

See Gregator vs Claude.

Comparison table

Tool	Best for	What you get	Citations	Free plan
Gregator	Learning a topic from scratch	A saved course of 1 to 12 Chapters	Inline footnotes and a Sources list per Chapter	3 courses in total
Perplexity	One question, fast	An answer or report in a thread	In every answer	Yes
ChatGPT	All-round help with study mode	Chat and deep research reports	Web search; source-based reports	Yes, with study mode
Gemini Guided Learning	Step-by-step tutoring	A tutoring chat, quizzes, flashcards	Not described per answer	Yes
Gemini Notebook	Studying sources you have	Answers, audio, video, flashcards	Built from your notebook	Yes
Brainmunk	Quick courses with videos	Lessons with videos and quizzes	Inside each lesson	3 courses
Claude	Learning with your own context	Chat, research, documents	Web search; Research on paid plans	Yes

Which AI tool should you use to learn something new?

A simple setup is two tools: one for structure and one for questions. Use Gregator or Brainmunk for a first course on a topic. Use Perplexity for a quick fact along the way. Use ChatGPT, Gemini, or Claude when you want to be questioned through a hard idea. When you have collected papers and notes, move them into Gemini Notebook.

If you study in a language other than English, or you need to learn from your own files, Gregator is the wrong tool for that job. Gemini Notebook, ChatGPT, and Claude all accept uploads.

Frequently asked questions

What is the best free AI tool for learning a new topic?

For guided practice, ChatGPT study mode and Gemini Guided Learning are both on free plans. For a structured, cited course, Gregator's free plan gives you 3 courses in total, and Brainmunk's gives you 3.

Can AI teach me a subject from scratch?

It can give you a structure, explanations, and practice. Open the sources it cites for the claims you depend on, and use quizzes to test what you remember instead of rereading.

Which AI tools show sources for what they say?

Perplexity cites every answer. Gregator puts inline footnotes in each Chapter and a Sources list at the end. Gemini Notebook works from sources you choose.

Is ChatGPT good for learning a new topic?

Yes, for questions and guided practice. It does not give you a saved, multi-chapter course with a Sources list per chapter; you build that structure in the chat.