How it works
From YouTube URL to
knowledge graph in 60s
mapifast uses a three-agent AI pipeline to convert any YouTube video into an interactive, research-grounded mind map with spaced-repetition quizzes.
Try it free →The three-agent pipeline
Each agent is a specialist. Together they produce better results than any single AI model.
The Architect
Structure extraction
Reads the transcript and builds the hierarchical concept tree. Identifies main topics, sub-topics, key claims, and relationships.
The Researcher
Academic grounding
Searches arXiv and peer-reviewed databases for each node. Synthesises a research report grounding every concept in evidence.
The Quizmaster
Active recall
Generates spaced-repetition quizzes from the concept map. Grades answers using LLM-as-judge and adapts difficulty over time.
How to convert a YouTube video to a mind map — step by step
STEP 01
Drop a YouTube link (or PDF)
Paste any YouTube URL — a lecture, podcast, tutorial, or talk — into the mapifast input box. Or upload a PDF, EPUB, or paste an article URL. mapifast handles any long-form content.
Supported: YouTube, PDF, EPUB, web articles up to 3 hours / 300 pages.
STEP 02
The Architect builds your knowledge map
The Architect agent reads the full transcript using GPT-5 and identifies the hierarchical structure of ideas: main topics, sub-topics, key claims, and supporting evidence. The result is a tree of concepts rendered as an interactive React Flow canvas.
Average time: 8–15 seconds for a 60-minute video.
STEP 03
The Researcher grounds every node in evidence
Click any node on your map and the Researcher agent searches arXiv, Semantic Scholar, and the open web for peer-reviewed papers that support or challenge that concept. You get a synthesised research report — not a list of links.
Per-node research runs on-demand so you pay only for the depth you need.
STEP 04
The Quizmaster locks it into memory
The Quizmaster agent generates spaced-repetition flashcards from your map. You answer in plain English; the AI grades your response and tracks which concepts need more review. Retention improves by up to 90% vs. passive rewatching.
Quizzes sync across devices. You can review on mobile, export to Anki, or share with classmates.
STEP 05
Export your notes everywhere
One click sends your full mind map — structure, citations, and notes — to Notion, Obsidian, Markdown, or PDF. Formatting is preserved. Your knowledge base stays searchable and interconnected across all your maps.
Notion and Obsidian export are available on the free plan.
See it in action — free
No credit card required. 10 mind maps free every month.