How to Make a Mind Map with ChatGPT (or Claude)

To make a mind map with ChatGPT, ask it for the map as text, then paste that text into a tool that draws it. ChatGPT writes a Markdown outline or Mermaid code, and a mind map tool like Markmap, Xmind or the Mermaid Live Editor turns it into branches you can see, fold and export.

The worked example in this guide is a founder’s Q4 growth plan: a booking app for small fitness studios, with branches for goals, channels, product and content. Every prompt below is copy-paste ready, and every vendor fact was checked on the vendor’s own pages on November 9, 2026. Claude follows the same routes, with one extra: it can draw the map beside the chat.

A pasted map is a snapshot. If you want the map to stay open while your agents keep adding to it, Context Board, the board app we build, has a Mind maps board where Claude or Codex reads the map and adds whole branches where they belong. That route comes last.

The prompt that gets ChatGPT to write a usable mind map

A mind map tool reads structure. A chat answer often comes back as paragraphs with bold labels, and that imports flat. So the prompt fixes the shape before it asks for ideas.

Copy this, swap the bracketed parts for your own, and paste your notes at the end. The more ChatGPT knows about your numbers and last quarter, the fewer generic branches you get.

I run [a booking app for small fitness studios]. Make a mind map of my Q4 growth plan.

Return it as a Markdown outline, no commentary:
- First line: "# Q4 growth plan"
- 4 to 6 main branches as "## " headings
- Under each branch, 3 to 5 ideas as "- " list items
- Sub-ideas indented two spaces under the idea they belong to
- Every idea under 8 words, written as a noun phrase, no full sentences

Use what I know. My notes:
[paste notes, last quarter's numbers, what customers ask for]

For the studio founder, ChatGPT comes back with something like this. It’s example output, and yours will differ.

# Q4 growth plan
## Goals
- 400 paying studios by December 31
- Monthly churn under 3 percent
## Channels
- Studio owner Facebook groups
- Partnerships with gym software resellers
- Referral program
  - One free month per referred studio
## Product
- Group bookings
- Waitlist for full classes
## Content
- Customer stories
- Pricing page rewrite

That outline is the map. The next two sections are two ways to see it drawn.

Route 1: paste the outline into a mind map tool

Markmap and Xmind both read Markdown, because headings and indented lists already say which idea sits under which.

Markmap. The quickest look. Open the Markmap editor, delete the sample text, and paste the outline. The map draws as you paste. In the words of Markmap’s own site, you write an outline the way you already do, and it “turns it into an interactive map you can fold, zoom, share and export.” Exports are SVG, PNG and one offline HTML file.

Xmind. Pick this when you want to keep editing the map in a mind map app. Save ChatGPT’s answer as a .md file, then follow Xmind’s Markdown guide:

1. Open Xmind on the desktop or the web.
2. Choose File, then Import, then Markdown (.md).
3. Pick the file. The first line becomes the central topic.
4. Check the levels. Xmind maps headings to levels, up to six, and list indentation to which idea sits under which.

Xmind’s guide also says you can skip the file and paste Markdown straight onto the canvas, where valid Markdown becomes topics and plain text stays plain text.

A launch map from this route pairs well with our product launch checklist for founders: map the ideas first, then work the list in order.

Route 2: ask ChatGPT for Mermaid mindmap code

Mermaid is a text format for diagrams, and it has a mind map type. Use it when the map has to end up as an image in a doc, a deck or a README.

Mermaid’s mindmap docs set the rules ChatGPT has to follow. A map starts with the word mindmap. Indentation sets the levels, so a line indented further than the one above it sits under it. Brackets and parentheses around a node’s text set its shape: square, rounded, circle, cloud, bang or hexagon. The docs also say mindmaps are experimental, so the syntax could change.

Paste this in the same chat, after the outline:

Turn this outline into Mermaid mindmap syntax.
Start with the line "mindmap". Put the topic as root((Q4 growth plan)).
Use two spaces per level. Remove any brackets, parentheses or quotes
from the idea text. Return one code block, no commentary.

The answer looks like this:

mindmap
  root((Q4 growth plan))
    Goals
      400 paying studios by December 31
      Monthly churn under 3 percent
    Channels
      Studio owner Facebook groups
      Partnerships with gym software resellers
      Referral program
        One free month per referred studio
    Product
      Group bookings
      Waitlist for full classes
    Content
      Customer stories
      Pricing page rewrite

Keep the line about brackets. In Mermaid, brackets and parentheses are how a node gets its shape, so a stray one inside an idea, like “Pricing (annual)”, can break the code.

To see it drawn, open the Mermaid Live Editor and paste the code into the Code panel. Mermaid’s getting started guide says the preview updates as you edit, and the Actions section saves the diagram as PNG, SVG or Markdown. The same guide says the editor’s history is stored in your browser, so export anything you want to keep.

OpenAI’s help pages we read don’t describe Mermaid drawing inside a ChatGPT chat, so plan on pasting the code somewhere that draws it.

How to make a mind map with Claude

Every prompt above works in Claude as written. Paste the outline prompt, then the Mermaid prompt, and paste the results into Markmap, Xmind or the Mermaid Live Editor the same way.

Claude has one shortcut. Anthropic’s file creation FAQ says you can still create artifacts such as “HTML or react apps, markdown documents, mermaid diagrams, SVGs”. So you can ask for the map drawn beside the chat:

Draw this outline as a Mermaid mind map artifact, with Q4 growth plan as
the root in a circle. Keep each idea under 8 words.

What you need for it to work:

• Artifacts turned on. Anthropic’s artifacts article says they need cloud code execution and file creation on in your settings, and it lists diagrams and flowcharts among the things Claude makes into an artifact.
• A plan that has them. The same article lists Free, Pro, Max, Ultra, Team and Enterprise, plus Claude Code on any plan that includes it.

Want branches you can click open and shut? HTML apps are another kind of artifact on Anthropic’s list, so you can ask Claude for a small page that draws the outline as a map you fold by clicking. Test it before you share it, since a page Claude writes can come out different each time. Our guide to Claude Artifacts covers where artifacts are saved, how sharing works and where they stop.

A mind map you and your agents keep growing

Each route so far ends with a picture of the map on the day you made it. When the plan changes in week three, you go back to the chat, ask again and paste again. A map you keep for a quarter wants a home your agents can read and write.

That’s the job of the Mind maps board in Context Board, a web app at board.contextbolt.com where your agents keep your boards current. Context Board is ours, so weigh the bias.

What the board does, from our own docs:

• The map lays itself out. The topic sits in the middle, branches split left and right, each in its own color, and the layout follows as the map grows.
• Your agent grows it. A connected agent reads the map and adds, renames, moves, folds, connects and removes ideas. New ideas glow as they arrive, and each change is one Undo.
• Fold and focus. Fold a branch and it shrinks to a small +N. Focus on one idea and it takes the middle, with a trail back to the whole map.
• An outline, both ways. The same map reads as an outline you can write in, and downloads as Markdown from the Outline or the More menu. On a phone, the outline is how the map shows.
• Room to grow. Up to 2,000 ideas, each up to 280 characters, one picture per idea, and connectors that link ideas across branches.

How the studio founder would use it:

1. Make the board. Choose New board, then Mind map, and type Q4 growth plan in the middle. Add a few ideas with Tab (an idea inside) and Enter (an idea beside it).
2. Connect your agent once. For Claude Code or Codex, link your computer with the one line from Connect. For the Claude app, add the board’s address as a custom connector and click Allow. Anthropic’s custom connector guide lists Free, Pro, Max, Ultra, Team and Enterprise, with Free limited to one custom connector.
3. Bring the ChatGPT outline over. Paste it into Claude and ask: “Put this outline on my Q4 growth plan map.” The board’s map tool takes an indented list and adds it as whole branches in one go.
4. Ask for a branch. “Add ideas for a referral program under Channels.” Claude reads the map, puts Referrals under Channels with three ideas, and they glow as they land.
5. Turn ideas into work. Ask Codex: “Turn the Product branch into a plan board.” It makes a Plan board with a step for each Product idea.
6. Get it out when you need it. Download the outline as Markdown, and it opens in Markmap, Xmind or a new ChatGPT chat.

Can ChatGPT do the writing itself? It depends on the plan. OpenAI’s custom MCP server guide says custom MCP server connections and full MCP support, including write actions, are available for ChatGPT Business and Enterprise/Edu on the web, and on Business an admin or owner adds the server. Its FAQ says Pro users can connect custom MCP servers with read and fetch permissions. So on Business and Enterprise/Edu, ChatGPT can grow the map; on other plans, Claude, Claude Code or Codex does. Our ChatGPT setup page has the steps.

If you build with the board’s own chat, it runs on the Claude Code or Codex plan you already pay for, so there are no AI credits to buy. Context Board is free for 3 days, then $12 a month for every kind of board.

Which route to pick

Pick by where the map has to end up.

The first four are good for a one-off: a brainstorm before a call, a picture for a planning doc. The fifth is for a map you’ll come back to every week, like a quarter’s plan or a launch.

What the board doesn’t do. The map lays itself out, so you can’t drag an idea to any spot you like: you move it inside another idea or reorder it. It’s a mind map for you and your agents, and a freeform team whiteboard is a different tool. Context Board vs Miro covers that split.

More prompts for a founder’s mind map

These work in ChatGPT or Claude, on any outline from the sections above.

Grow one branch.

Here is my mind map as a Markdown outline. Add 3 to 5 ideas under
"Channels" for reaching studio owners who don't use Facebook.
Return the full outline, with each new idea ending in "(new)".

Find the gaps.

Read this mind map as a skeptical investor. Which branch is thin,
which ideas overlap, and what is missing? Answer in a short list,
then give the corrected outline.

Map a launch instead of a quarter.

I'm launching [product] on [date]. Make a mind map with branches for
Audience, Message, Channels, Launch day, and After launch. Same format
as before: # topic, ## branches, indented - ideas under 8 words.

Turn a branch into tasks.

Turn the "Product" branch into a task list. One line per task,
with a week number from 1 to 13 and what "done" looks like.

On a Context Board map, the last one is a job for your agent: ask Codex to turn the branch into a plan board, and the steps land on a board of their own. For where a mind map sits beside your notes and saved reading, see our roundup of second brain apps.

When the map comes out wrong

The map is flat in Xmind. Xmind’s guide ties levels to headings and list indentation. If ChatGPT gave you bold labels or numbered paragraphs, ask again: “Use # for the topic, ## for branches and indented - list items for ideas.”

Mermaid shows a syntax error. Paste the error message back into the chat with the code and ask for a fix. The usual causes are brackets or parentheses inside idea text and mixed indentation. Mermaid’s docs say it attaches an unclear line to the closest parent above it, so one wrong indent can move a whole branch.

Too many ideas to read. Cap it in the prompt: 4 to 6 branches, 3 to 5 ideas each, under 8 words per idea. Ask for a second map for any branch that needs more.

Generic ideas. With nothing to go on, ChatGPT tends to fill gaps with stock advice. Paste your real numbers, your customers’ words and last quarter’s results before you ask.

The map goes stale. A pasted map doesn’t change when your plan does. Download it, paste it back with what changed, and ask for an update, or keep it on a Mind maps board and ask Claude to add this week’s ideas where they belong.