Eraser

Eraser positions itself as an AI co-pilot for technical design and documentation, a category that has seen growing interest as teams seek to reduce the friction between writing code and maintaining clear, up-to-date diagrams. The tool’s core value proposition is straightforward: use natural language to generate technical diagrams, auto-create diagrams from codebases, and manage everything as code with version history. For enterprise architects, DevOps engineers, and software developers who regularly produce architecture diagrams, data flow maps, or infrastructure visuals, Eraser promises to cut down the manual effort of drawing and updating these artifacts. The question is whether it delivers enough depth to justify a paid plan, and where its practical limits lie.

Eraser’s standout feature is its ability to generate diagrams from AI prompts. You describe what you need in plain English, and the tool produces a diagram that can be edited further. This is particularly useful for early-stage design sessions or when you need a quick visual to communicate an idea. The quality of these AI-generated diagrams is generally good for standard architectural patterns, but complex or highly specific layouts may require manual adjustment. The premium AI diagram tier, available on paid plans, likely offers better fidelity or more advanced generation capabilities, though Eraser does not publicly detail the exact difference between standard and premium AI diagrams. The free plan includes 10 standard and 2 premium AI diagrams per month, which may be enough for evaluation but could frustrate heavy users.

More compelling for ongoing use is the codebase diagram feature. Eraser can connect to a code repository and generate diagrams that reflect the current state of the code. When the code changes, the diagrams can update automatically. This is a significant time-saver for teams that struggle to keep documentation in sync with rapidly evolving codebases. The feature works best with well-structured repos and is likely most reliable for infrastructure-as-code or microservices architectures. However, users should expect some manual tweaking for complex dependencies or legacy code.

The diagram-as-code approach, where diagrams are defined in a markup language and stored alongside code, fits naturally into developer workflows. Combined with markdown notes, Eraser allows documentation to live close to the code, making it easier to review changes via pull requests. Version history, available from 7 days on the free plan to unlimited on business and enterprise, adds a safety net for collaborative editing.

Integrations with Confluence, Notion, VS Code, and GitHub are practical but vary in depth. The VS Code extension lets you create and edit diagrams without leaving the editor, which is a strong productivity boost. Confluence and Notion integrations allow embedding live diagrams in pages, though the update mechanism may require manual sync depending on the plan. The diagramming API, available on business and enterprise plans, opens possibilities for custom automation, such as generating diagrams in CI/CD pipelines.

Eraser’s pricing starts at free, with paid plans at $10 and $25 per member per month, plus enterprise pricing. The free plan is limited to 5 files and 7-day version history, which is restrictive for serious use. The Starter plan at $10 removes file limits and extends version history to 90 days, but still caps AI diagrams. The Business plan at $25 unlocks unlimited version history, SAML SSO, and API access. For teams that rely heavily on AI-generated diagrams, the caps on premium and standard diagrams may be a bottleneck. The enterprise plan offers unlimited AI diagrams and flexible deployments, but pricing is custom.

Who benefits most from Eraser? Enterprise architects who need to maintain a living set of architecture diagrams will find the codebase diagram and version history features valuable. DevOps engineers automating infrastructure documentation can use the API and GitHub integration to embed diagram generation into their workflow. Software engineers who prefer documenting as they code will appreciate the VS Code integration and diagram-as-code approach. Non-technical users may find the AI diagram generation accessible, but the tool’s core workflow is geared toward developers and technical documenters.

Limitations to consider: AI diagrams are not unlimited even on paid plans, which may be a dealbreaker for teams that generate many diagrams. The codebase diagram feature works best with certain languages and project structures; it may not handle all codebases gracefully. Eraser’s documentation does not list specific use cases or job roles, which suggests its positioning is broad but still maturing. For a buyer evaluating Eraser, the key decision criteria are: how many AI diagrams your team needs per month, whether the codebase diagram feature reliably handles your tech stack, and whether the integrations match your existing tools. If your primary need is a simple diagramming tool without AI, cheaper alternatives exist. But for teams that want to automate diagram creation and maintenance, Eraser offers a focused, developer-friendly solution that addresses a real pain point.