# Eraser

> AI diagramming and docs canvas for engineering teams

Eraser is a diagramming tool for engineering teams. Each file pairs an infinite canvas with a Markdown note editor, and diagrams can be drawn by hand, written as diagram-as-code, or generated by AI from a prompt, an image, a file or a connected Git repository. It covers architecture, sequence, flowchart, ERD and BPMN diagrams, integrates with GitHub, Notion, Confluence and VS Code, and offers a REST API and an MCP server for AI agents.

- **Category:** Whiteboards & Mind Maps
- **Made by:** Eraser Labs, Inc.
- **Website:** https://www.eraser.io
- **Runs on:** Web
- **Facts last checked:** Oct 6, 2026

## Pricing

Eraser has a free plan. Paid plans start at $15 per member / month, billed annually.

- **Pricing model:** Free plan
- **Free plan:** 3 files, 3 AI diagrams and 7-day version history, with unlimited guests, diagram-as-code, Markdown notes and the GitHub, Notion, Confluence and VS Code integrations. No private files.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Free | $0 | 3 files, 3 AI diagrams and 7-day version history, with unlimited guests, diagram-as-code and Markdown notes. |
| Starter | $15 per member / month, billed annually ($20 billed monthly) | Unlimited files, 40 AI credits a month, 90-day version history, private files, 20 custom icons and usage-based API calls. |
| Business | $45 per member / month, billed annually ($60 billed monthly) | Everything in Starter, plus 250 AI credits a month, unlimited version history, SAML SSO, 100 custom icons and reference diagrams. |
| Enterprise | Custom | Unlimited AI diagrams, flexible deployment including single-tenant and self-hosted, usage reporting, a customer success manager and payment by ACH or wire. |

Read from https://www.eraser.io/pricing on Oct 6, 2026. Prices change, so confirm with Eraser before buying.

## Ways to pay less

- **25% less with annual billing** (Annual discount): Starter is $15 per member a month billed annually against $20 billed monthly, and Business is $45 against $60, which works out 25% cheaper on both plans. Source: https://www.eraser.io/pricing
- **Education discount on request** (Education): Eraser's docs say discounts are available to education users, who request one by filling out a form. The size of the discount is not published. Source: https://docs.eraser.io/discounts
- **Nonprofit discount on request** (Nonprofit): Non-profit users can request a discount through the same form linked from the pricing page FAQ and the docs. The size of the discount is not published. Source: https://docs.eraser.io/discounts

## Key features

- **AI diagram generation:** A prompt, an image or a file such as Terraform or a database schema is turned into an editable diagram, which can then be refined through AI chat or by hand in the visual editor.
- **Diagram-as-code:** Architecture, sequence, flowchart, ERD and BPMN diagrams each have a text syntax, so a diagram can be read, compared and edited as code. It is included on every plan.
- **Canvas with Markdown notes:** A file holds one infinite canvas and a note editor with Markdown support. Figures from the canvas can be embedded in the document, and files export to PDF, PNG, SVG or Markdown.
- **Codebase diagrams and Eraserbot:** Diagrams can be generated from a connected Git repository. Eraserbot watches chosen files and comments on pull requests with updated diagrams when they change.
- **REST API and MCP server:** The API renders a diagram from a prompt or from Eraser's diagram code. The MCP server lets Claude, Cursor or ChatGPT create, search, update and export diagrams.
- **Real-time collaboration and guests:** Members edit together in real time and leave comments and mentions. Guests are free on every plan and can edit or comment only on files they are invited to.

## Good for

- Engineering teams documenting system architecture
- Developers who prefer to write diagrams as code
- Keeping diagrams in step with a Git repository
- Embedding live-updating diagrams in Notion or Confluence

## Worth knowing

- The Free plan stops at 3 files and 3 AI diagrams, keeps 7 days of version history and has no private files.
- AI use beyond a plan's monthly credits costs $60 per 100 credits, and only on paid plans with usage-based pricing switched on.
- API calls are billed by usage on top of a paid plan: $80 per 100 prompt-to-diagram calls and $20 per 100 code-to-diagram calls.
- The vendor's site lists no desktop or mobile app; Eraser runs in a browser, and SAML SSO needs the Business plan.

## Works with

GitHub, Notion, Confluence, VS Code, AWS, Azure, Google Cloud, ServiceNow

**Tags:** Diagrams, AI features, Real-time collaboration, Markdown, Documents, Public API

## Alternatives

- [Lucidchart](https://toolgpa.com/tools/lucidchart): Browser-based diagramming for flowcharts, org charts and systems. [Compare](https://toolgpa.com/compare/eraser-vs-lucidchart)
- [draw.io](https://toolgpa.com/tools/draw-io): Free diagram editor that saves files to storage you choose. [Compare](https://toolgpa.com/compare/draw-io-vs-eraser)
- [Mermaid](https://toolgpa.com/tools/mermaid): Text-based diagramming platform with AI and a visual editor. [Compare](https://toolgpa.com/compare/eraser-vs-mermaid)
- [Excalidraw](https://toolgpa.com/tools/excalidraw): Open-source whiteboard for hand-drawn style sketches and diagrams. [Compare](https://toolgpa.com/compare/eraser-vs-excalidraw)
- [Whimsical](https://toolgpa.com/tools/whimsical): Whiteboard for flowcharts, wireframes, mind maps and docs. [Compare](https://toolgpa.com/compare/eraser-vs-whimsical)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 6, 2026:

- https://www.eraser.io/pricing
- https://www.eraser.io/
- https://www.eraser.io/product/integrations
- https://www.eraser.io/use-case/brainstorming
- https://docs.eraser.io/
- https://docs.eraser.io/what-is-eraser
- https://docs.eraser.io/plans
- https://docs.eraser.io/usage-based-pricing
- https://docs.eraser.io/billing
- https://docs.eraser.io/discounts

Page: https://toolgpa.com/tools/eraser
Listed by ToolGPA (toolgpa.com).