Diagrams · AI-assisted · Private by design

Diagrams that
stay alive.

Most diagramming tools produce dead artifacts — stale the moment the system changes. Sutra draws semantic, living diagrams: typed components you can bind to a source of truth, laid out for you by AI from a plain-English description.

Open Sutra How it works
Features

Semantic first.
AI when you want it.

Prompt-to-diagram

Describe a diagram in plain English and a frontier model — Claude, GPT, Gemini, or any OpenAI-compatible endpoint — turns it into a laid-out, fully editable canvas.

Chat with the canvas

Iterate conversationally — "add a payments service", "make the error path explicit". Each edit applies to the live diagram and can be reverted with one click.

Bring your own key

Keys stay in your browser and prompts go straight to the provider you chose — there's no Sutra server in between. No account, no tracking, nothing stored remotely.

Seven diagram types

Architecture graphs, flowcharts, swimlanes, ER diagrams, mind maps, user journeys, and Gantt timelines — for engineering and product audiences alike.

Architecture insights

"Explain this architecture", single points of failure, fan-in hotspots, orphans, unbound components — computed locally over the semantic graph, no AI required.

Present & export

Full-screen presentation mode on F5, and downloads with control over padding, scale, and background: PNG, SVG, or a re-importable .sutra.json you can share.

How it works

Describe. Refine. Present.

01

Describe it

"Swimlane for client, middleware and server — client requests product info." One sentence in, a laid-out diagram out. Or skip AI entirely and build from scratch.

02

Refine it

Drop typed components from the palette, drag to connect, tidy up with auto-layout, undo with Ctrl/Cmd+Z, and reach everything from the Ctrl/Cmd+K command palette.

03

Share it

Present full screen, or export PNG, SVG, or .sutra.json — the recipient can keep refining with their own key, or none at all.

Tech stack

Typed nodes on an infinite canvas.

React 19 TypeScript Vite React Flow BYOK AI · Claude / GPT / Gemini localStorage persistence html-to-image export

Your architecture, alive.

Free, no account, keys stay with you.

Open Sutra