Do I Need an Account or My Own API Key for AI Draw?
Short answer: no
No, you don’t need an account, and you don’t need your own API key. Open AI Draw, type what you want in plain language, and you’re done. The free tier gives you 3 diagrams a day with zero sign-up, zero config.
How the free tier works
The app runs on its own model provider, so there’s nothing for you to set up or pay for up front. Free users just open the page and go. Three diagrams per day is the whole limit. Want a flowchart, a UML sequence diagram, a cloud architecture sketch, or an org chart? Same flow every time: describe it, get a real, editable draw.io diagram back.
Pro Pass is a code, not an account
When you hit the daily cap, the Pro Pass removes it: $9.90 for 30 days. The access code arrives by email, and you paste it into Settings. That’s the entire process — no registration, no password, no profile to manage. You can read the full details on the pricing page.
BYOK: optional, mostly for heavy users
There’s also a bring-your-own-key option in Settings. Paste your own AI API key and you get unlimited use, with the bill going to your provider’s account instead of through us. Honestly, this is aimed at people who already run their own keys and want the cap gone without buying a pass. To be fair, it also means you’re now managing your own billing and key safety. Depends on whether that tradeoff is worth it to you.
The honest tradeoff: no account means browser-only
Here’s the part people don’t expect. Because there’s no account, your diagrams live in the browser you made them in — stored in localStorage. Open a private window, switch computers, or clear your browser data, and those diagrams are gone. In my experience, the fix is to export as you go. Grab the PNG, the SVG, or the .drawio source file, which opens in any draw.io-compatible tool, and keep it somewhere safe. Export early, export often — it’s the one habit that saves you. The daily counter is tied to the browser too, so a fresh browser can feel like starting over even mid-day.
Honest about privacy, too
Let’s be straight about the edges. Your prompt text does get sent to the AI model provider (DeepSeek) to generate the diagram — it isn’t processed entirely on your device. Uploaded images, screenshots, or PDFs (the replicate-a-diagram feature) are used only for that request and aren’t kept. No data resale, no content mining. But browser-only storage is a limitation as much as a feature: it means privacy by default, yet zero sync between your machines. If you diagram from several devices, build the export habit now.