Show HN: Sysmodeler.ai cuts safety-critical modeling from weeks → minutes (Beta)
I’m Tawhid. I spent ~14 years at Ford & GM building safety-critical systems and dreading the part where we had to draw SysML diagrams for audits. Even good teams lose weeks clicking around Cameo or Rhapsody before real design starts.
Since July 2024 I’ve been bootstrapping SysModeler with a small team (14 people, mostly engineers/interns I trained). Goal: make a browser tool that gets you a correct first draft in minutes, then stays out of your way so you can edit by hand.
What it does Accepts plain English or code snippets → generates all nine SysML diagram types (block defs, activity, sequence, …).
Runs in the browser; nothing to install, works on Linux/Win/Mac.
Manual drag-and-drop still works; you can ask the helper to clean up or refactor but it never overwrites without confirmation.
(Upcoming) Early checks for consistency and traceability; spits out a PDF package for audits.
Why bother Compliance isn’t optional in automotive / aerospace, but the modelling step is still a time sink. Most engineers use today’s tools only because the spec says they must—so they rush, and quality suffers. I’d rather shorten the grind and let teams iterate earlier.
Stack (nutshell) React + React-Flow editor, Python/FastAPI backend, LLM calls (OpenAI / Gemini) behind an API, deployed on Azure AKS. No user data is reused for training.
Free beta No credit card.
Looking for feedback Anything confusing in the editor?
Performance pain on large models?
Must-have integrations we’re missing (Git, req-tools, etc.)?
Odd SysML edge cases we should support?
Demo: https://youtu.be/zAdmf5Muq-0
Happy to answer questions or open the hood on any part of the stack. Thanks for taking a look.
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