Every tool in this category is free. What differs is which part of the job it charges for, and the answer is almost never generation, which is the cheap part now. The charge lands on one of four things:
- How many maps you may keep (three is the usual number).
- Whether you can get the map out — export locked, or watermarked.
- Whether it works offline and whether your text is uploaded.
- Whether you can edit what the AI produced, or only regenerate it.
Read any free tier by those four questions and the comparisons get short. A tool that generates unlimited maps but won’t let you export one has not given you anything; a tool with a three-map cap and a clean export has.
The comparison
Free-tier terms change constantly and often silently, so treat this as where to look rather than as a quote. Verify the export before you commit any real thinking to a tool, because that is the term that most often turns out to be worse than advertised.
| Tool | Free tier gives you | Where it stops | Data |
|---|---|---|---|
| ChatGPT / Claude + Markmap | Unlimited, full control | You assemble it yourself | Uploaded |
| Xmind | Full desktop editor, generous free use | AI features and some exports are paid | Local files, AI is not |
| Whimsical AI | A handful of AI generations, polished output | Board count, then AI runs out fast | Uploaded |
| Miro AI | Works inside a real whiteboard | Board limit; AI credits are metered | Uploaded |
| MindMeister | A small number of maps | Three maps, then paid; export limited | Uploaded |
| Coggle | Unlimited public maps, clean UI | Private maps are paid; AI is thin | Uploaded |
| Taskade | AI plus task management | Monthly AI credits | Uploaded |
| GitMind | Generous free maps, many templates | Watermarked exports, ad-heavy | Uploaded |
| Smart Mind | Unlimited maps, six export formats | Mobile only; a few free AI generations, then Pro; ads in the free version | Maps on device, AI prompts online |
Everything above the last row keeps your maps on a server, which is the correct default for a collaborative whiteboard and the wrong one for a map of something you shouldn’t be pasting anywhere. Every AI generator, Smart Mind included, sends the text you ask about to a model online; the difference is whether the finished map stays there too.
The option most comparisons leave out
You already have an AI. Ask it for a Markdown outline instead of a mind map:
Give me a Markdown outline of <topic>, three levels deep,
headings and nested bullets only, no prose.Then paste that into any of these, all free:
- markmap.js.org — paste Markdown, get an interactive map instantly, export SVG. No account.
- Obsidian with the Enhancing Mindmap plugin, if the notes should live somewhere permanent.
- Xmind, Smart Mind or MindMeister — all import Markdown or OPML directly.
This is the highest-ceiling free route by a distance: no map cap, no watermark, no credits, and the outline is portable to anything. What it costs you is a two-step workflow and a layout nobody designed. For a map you’ll act on and discard, that is a fine trade. For one you’ll present, it isn’t.
The same trick works with Mermaid syntax if the map is going into a
repository or a wiki. GitHub, GitLab and Notion all render mindmap blocks
natively, so the map lives in version control as text.
What AI generation is actually good at
Worth being specific, because the demos oversell it.
It is good at the blank-page problem: turning “plan a product launch” into twenty branches you can react to. Reacting is much faster than generating, and that is the real win. It is also good at expanding one branch you’re stuck on, and at restructuring an existing list into a hierarchy.
It is bad at knowing what you actually meant. Generated maps are generic by construction: ask for a marketing plan and you’ll get the same eight branches anyone gets. The output is a starting scaffold, and the value is entirely in what you do to it afterwards.
Which makes the fourth question above the decisive one. A tool where AI output arrives as ordinary editable text is a different product from one where it arrives as a locked artefact you can only regenerate.
Choosing
- Collaborating with a team, in a browser — Miro or Whimsical. You are paying for the whiteboard; the AI is a feature of it.
- Serious desktop mind mapping, long-lived maps — Xmind. It has been the standard for a decade for good reason, and its free tier is a real editor rather than a demo.
- Maximum free ceiling, willing to do two steps — ChatGPT or Claude to Markdown, then Markmap.
- Thinking on a phone, or maps you’d rather keep off a server:
- A map that lives in a repo or a wiki — Mermaid
mindmapblocks, rendered by the platform.
Questions to ask before you commit
- Export the very first map you make. Before you invest anything in the tool. If the export is watermarked, locked or missing a format you can re-import, you’ve learned it cheaply.
- Can you import? A tool that reads OPML or Markdown can absorb your existing maps; one that can’t is a one-way door.
- Is generation metered separately from everything else? “Free forever” and “20 AI generations a month” are frequently the same plan.
- Where does the text go? Meeting notes, client work, anything under an NDA: the answer matters, and it is in the privacy policy rather than on the pricing page.
If you’re generating from meeting notes specifically, there’s a method that works better than pasting the whole transcript in: how to turn meeting notes into a mind map.