Eraser AI
Technical diagramming and docs tool whose AI turns prompts, code and repositories into editable architecture, sequence, flow and ER diagrams
FreemiumFree plan
Decision snapshot
Fast-read signals for fit, pricing, and trust.
- Category
- Business & Productivity
- Best for
- ai diagram generator
- Pricing
- Freemium
- Access
- Free plan available
What is this tool?
Eraser earns its place on engineering teams that keep architecture and sequence diagrams next to their code: its AI drafts a diagram from a prompt, code or a repository, the result stays editable by chat, on the canvas and, for most types, in code, and on a paid plan with usage-based pricing turned on Eraserbot can update it on pull requests. Plan AI use in credits - 40 a month on Starter and 250 on Business, with more only through usage-based pricing - because the Free plan is an evaluation tier of 3 files with a small AI allowance that Eraser's pricing page and docs state differently.
By QT Desk
Read full overviewHide full overview
Eraser runs in the browser at app.eraser.io, with sign-in by Google, Microsoft, email or SSO. A VS Code extension previews and edits diagram-as-code files, the MCP servers connect AI agents, and Enterprise customers can choose single-tenant or self-hosted deployment.
Paid plans are billed per member, admins included, monthly or annually; annual billing charges the year up front for the members on the team at purchase, with pro-rated charges or credits as members change, and guests are free on every plan. Subscriptions renew automatically, and under the terms cancelling stops renewal but fees for the current period are not refunded, with other refunds at Eraser's discretion. Beyond the monthly AI credits, admins on paid plans can turn on usage-based pricing: extra AI credits cost $60 per 100, AI diagram generation through the API $80 per 100 calls and rendering diagram code through the API $20 per 100 calls, billed by calendar month against a spend limit that blocks further use until the next month once reached.
Under Eraser Labs' terms you keep sole ownership of the content you post and grant Eraser a licence only to provide the service; the terms do not separately address AI-generated diagrams, and users must be over 18. Eraser is SOC 2 Type 2 certified and penetration-tested annually, with reports available through its Trust Portal, and SAML SSO starts on Business. The operator is Eraser Labs, Inc. of San Francisco.
Is this right for you?
Quick fit check against how you actually work.
Choose this if
- Your diagrams describe software - cloud architecture, service sequences, data models - and you want a draft generated from Terraform, a schema or a repository rather than drawn box by box
- You want diagrams kept as editable text beside your docs, synced with GitHub and, where usage-based pricing is turned on, updated by a bot on pull requests
- Your team writes in Notion or Confluence and wants diagrams embedded there that update when the source changes
- Engineers on your team use AI coding agents and want them to create or edit diagrams through an MCP server
Consider alternatives if
- Your repositories are not on GitHub: Git sync works with GitHub only, and Eraserbot's pull-request updates cover GitHub and GitLab
- Your security review needs one named AI sub-processor: Eraser's AI FAQ names Anthropic's Opus 4.5, while its security page and AI page name OpenAI
- You expect heavy AI use: Starter and Business include 40 or 250 AI credits a month (Enterprise is described as unlimited), and more costs $60 per 100 credits through usage-based pricing
- You need SAML SSO below the Business plan or self-hosting below Enterprise
What people say
Aggregate community sentiment, summarized — not native reviews.
Common praise
Four YouTube commenters under three videos (May 2024 to June 2025) say the AI produced a useful diagram. Three describe their own material going in: one had a JavaScript automation script turned into a sequence diagram, one a paragraph about a two-year project into a simple high-level diagram, and one notes into a labelled flow chart; the fourth praised the flowchart it generated. Two of the three videos are Eraser's own uploads, so these are viewers' reports rather than independent reviews.
Key features
What you can actually do with this tool.
Diagrams from prompts, code or repositories
A plain-language description, pasted code such as Terraform or a schema, an uploaded file or image, or a connected Git repository becomes an editable architecture, sequence, flow-chart, entity-relationship or BPMN diagram.
Three ways to edit
Results are refined by chatting with the AI, changed directly in the visual editor, or edited as diagram-as-code text that can be read and diffed like any other file. Eraser's AI-diagrams docs add that AI architecture diagrams and flowcharts come out as freeform diagrams unless the team's diagram format is set to code (DSL).
Grounded in your own conventions
Templates, reference architectures, rules and custom styles steer generation toward how your systems actually look; reference diagrams start on the Business plan.
Docs and diagrams in one file
Markdown documents sit beside diagrams in the same file, Eraser AI drafts document outlines, and GitHub sync pulls from the main branch and pushes changes to a branch you choose, optionally opening a pull request.
Diagrams that follow the code
Eraserbot watches chosen files in a GitHub or GitLab repository and updates the related diagrams on pull requests, leaving a comment when a change is not relevant to the diagram. It needs usage-based pricing, which only paid plans offer.
Agents and API
A remote MCP server (OAuth) and a local one (API key), plus agent skills, let MCP-compatible coding agents create and edit diagrams within the plan's AI credits. Paid plans add a REST API billed through usage-based pricing.
Integrations
Tools and platforms this connects with.
GitHubGitLabNotionConfluenceVS Code
Plans & pricing
Pricing tiers and what's included in each.
Free
Free
- Up to 3 files and 7 days of version history
- Unlimited guests; GitHub, Notion, Confluence and VS Code listed
- A small AI allowance that Eraser's pricing page and docs state differently
- No API calls
Starter
$15 per member a month billed annually, or $20 billed monthly
- 40 AI credits a month
- Private files, 20 custom icons and 90 days of version history
- API calls and extra AI credits through usage-based pricing
Business
$45 per member a month billed annually, or $60 billed monthly
- 250 AI credits a month
- SAML SSO, reference diagrams, 100 custom icons and unlimited version history
- API calls and extra AI credits through usage-based pricing
Enterprise
Custom pricing
- Described by Eraser as unlimited AI
- Self-hosted or single-tenant deployment, custom contracts and a customer success manager
Official pricing pagePricing may have changed. Always verify before purchasing.
Frequently asked
Common questions about this tool, answered.
Is Eraser AI a photo object-removal tool?
No. Eraser drafts and edits technical diagrams and docs for software teams, and 'Eraser AI' is its name for the AI features that draft diagrams and document outlines. It is unrelated to photo editors that erase objects from images.
How many AI diagrams does the Free plan include?
Eraser states it two ways: the pricing page lists 3 AI diagrams and the docs plans page says up to 5. Paid plans include monthly AI credits instead: 40 on Starter and 250 on Business.
Can I export to PDF on the Free plan?
Eraser's pages disagree. The pricing comparison lists export to PDF, PNG, SVG and Markdown on every plan, including Free, while the export docs say PDF export, along with Visio, draw.io, PowerPoint and Google Slides export and removal of the Eraser watermark, needs a paid plan. PNG, SVG and Markdown export on Free are not disputed.
Does Eraser train AI models on my diagrams?
Eraser states that neither it nor OpenAI, the provider those statements name, trains models on your data, though Eraser may analyse usage to improve its AI feature, and that OpenAI keeps requests for up to 30 days. Its AI FAQ also says the current model is Anthropic's Opus 4.5 and gives no training or retention terms for Anthropic.
Do guests count toward per-member billing?
No. Guests are free and unlimited on every plan; paid plans are billed for each team member, admins included.