Diagram FAQ
What Diagram is, which AI tools work with it (Claude, ChatGPT, Codex, Cursor, Gemini CLI), what it costs, who can see your diagrams, and how it compares to screenshots.
What is Diagram?
A home for diagrams your AI tools draw. Ask Claude, ChatGPT, Codex, Cursor, or another AI tool for a diagram, and Diagram gives it a link that always shows the latest version.
Which AI tools work with it?
Coding agents (Claude Code, Codex CLI and app, Gemini CLI, OpenCode), editors (Cursor, VS Code with Copilot, Windsurf, Cline, Zed, JetBrains), and chat apps (Claude desktop, claude.ai, ChatGPT, and any app that takes an MCP connector). Setup is one paste. See Getting started.
Does it cost anything?
The free plan covers 5 projects with up to 100 diagrams each, which is plenty for most people. Pro is $5/month for 100 projects of 1000 diagrams each, plus orgs. The limits keep the site free of spam. See pricing.
Who can see my diagrams?
Only you, until you share them. You can add people by email, share with your org, or make a single diagram public. See Sharing and privacy.
Why not paste a screenshot?
A screenshot is out of date the moment things change. A Diagram link always shows the latest version, stays sharp and interactive, and can be updated by the same tool that changed the code.
Can I edit a diagram on the website?
No. You change a diagram by asking your AI tool, which keeps the diagram next to the code it describes.
Can I delete a diagram?
Yes. Ask your tool to delete it. The diagram and all its versions are removed and the link stops working.
Is it safe to open someone's diagram?
Yes. Diagrams run in a sealed-off sandbox and can't see your account or act as you.
Is there an API?
Yes, for developers and agents. See the developer reference.