DiagramGPT

What is DiagramGPT?

DiagramGPT is a free text-to-diagram tool made by the team behind Eraser, a documentation and diagramming product for engineering teams, using OpenAI's models. You describe a process or system in plain English, a nested list or a code snippet, and it draws a diagram without needing an account to generate one. It supports five diagram types: BPMN, sequence, cloud architecture and entity relationship diagrams, plus flowcharts. To keep the result, click Save and Edit Diagram, which opens it in Eraser where you can refine it with diagram-as-code, the visual editor, or further AI prompts, and export to PDF, PNG, SVG or Markdown. Eraser's paid plans add API access, private files, SAML SSO and an MCP server for agents in Claude, Cursor, VS Code and ChatGPT. Eraser pricing starts free; Starter is $15 per member per month billed annually ($20 monthly) and Business is $45 ($60 monthly).

Use cases

• Generate a flowchart from a description
• Draw an entity relationship diagram
• Sketch a cloud architecture diagram
• Create a sequence diagram from text
• Visualize a codebase from a Git repository
• Turn call transcripts into diagrams

Who it's for

• Software engineers
• Solution architects
• Technical writers
• Engineering teams

Why use DiagramGPT

• A first draft appears from a short description, so you skip the blank canvas.
• Edits can be made as code, in the visual editor or through further AI prompts.
• You can start without an account, then move to Eraser when you want to keep and share the diagram.
• Neither Eraser nor its model provider uses your data to train models.
• Teams can ground diagrams in their own icon libraries and private repositories.

DiagramGPT features

• Prompt to diagram in plain English, lists or code
• Flowcharts, ER, cloud architecture, sequence and BPMN diagrams
• Free generation with no sign-up
• Save and edit in Eraser with diagram-as-code
• Reference libraries to ground AI in company building blocks
• Private Git repository integration for architecture diagrams
• AI refinement with clarifying questions
• Export to PDF, PNG, SVG and Markdown
• API for generating diagrams on paid plans
• MCP server for create, read, update and export

DiagramGPT integrations

• GitHub
• Notion
• Confluence
• VS Code
• Claude
• Cursor
• ChatGPT
• OpenAI

How to get started with DiagramGPT

1. Open the DiagramGPT page and choose a diagram type.
2. Type a prompt, paste a nested list, or paste a code snippet.
3. Review the generated diagram.
4. Choose Save and Edit Diagram to continue in Eraser.
5. Refine it with diagram-as-code or AI edits, then export or share it.

DiagramGPT limitations

• The generator offers five diagram types
• Editing, saving and export need a free Eraser account
• The Free Eraser plan has 3 files and 3 AI diagrams
• The API is available only on Starter, Business and Enterprise plans

DiagramGPT pricing

Yes, DiagramGPT has a free plan. Paid plans start at $15 per month, according to the official pricing page on 24 Oct 2026.

DiagramGPT plans

• Free

  $0/member/month

  free forever

  • 3 files
  • 3 AI diagrams
  • 7-day version history
  • Unlimited guests
  • Diagram-as-code

• Starter

  $15/member/month

  billed annually, or $20 monthly

  • Unlimited files
  • 40 AI diagrams
  • 90-day version history
  • Private files
  • 20 custom icons
  • API calls

• Business

  $45/member/month

  billed annually, or $60 monthly

  • Unlimited files
  • 250 AI diagrams
  • Unlimited version history
  • SAML SSO
  • 100 custom icons
  • Reference diagrams

• Enterprise

  Custom

  • Unlimited AI diagrams
  • Flexible deployments
  • Customer success manager
  • ACH and wire transfer
  • Usage reporting

Plans as listed on the official pricing page on 24 Oct 2026. Prices can change and may vary by country or exclude tax. Check the official pricing page.

DiagramGPT alternatives

The main DiagramGPT alternatives listed on Debuly are Napkin, FigureLabs, Stitch with Google, Whimsical AI, Sloyd and Banani. The table compares pricing and platforms; order is A–Z.

1. 

   Banani

   AI UI design tool that generates editable multi-screen app and web designs from prompts, images or PRDs.

   DesignCoding
   FreemiumVisit Banani (official site)
2. 

   FigureLabs

   AI figure generator for researchers that turns text, documents or sketches into editable scientific illustrations, flowcharts and plots.

   DesignImage generationResearch and search
   FreemiumVisit FigureLabs (official site)
3. 

   Napkin

   AI tool that turns pasted text into editable diagrams, infographics and slides, with free and paid plans based on AI credits.

   DesignProductivityWriting
   FreemiumVisit Napkin (official site)
4. 

   Sloyd

   AI creation platform that turns text and images into game-ready 3D models, with rigging, animation, texturing and plugins for Unity, Unreal and Blender.

   DesignImage generationDeveloper platforms
   FreemiumVisit Sloyd (official site)
5. 

   Stitch with Google

   AI interface design tool that turns text prompts, sketches and mood descriptions into UI screens, Figma files and HTML/CSS code.

   DesignCoding
   Visit Stitch with Google (official site)
6. 

   Whimsical AI

   Chat-based AI agent inside Whimsical that builds flowcharts, mind maps, wireframes and sequence diagrams from a text description.

   DesignProductivityAutomation and agents
   FreemiumVisit Whimsical AI (official site)

DiagramGPT FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from eraser.io · fetched 23 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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