One paid tier — Line9 Pro. Per seat, with a floor of one: $12 a month, or $120 a year (two months free) — half price while we're early. A workspace with one member is just a workspace; the team-shape is there if and when you need it.
The web viewer plus a personal-use CLI.
Commercial-use CLI, published diagrams, premium themes.
Stays $10 for as long as you're subscribed. Closes to new sign-ups when the keyboard-first editor ships.
| Feature | Free | Pro |
|---|---|---|
| Web viewer + custom rendering | Yes | Yes |
| Standard themes | All | All |
| Premium themes (Print, Slides, Dense) | — | Yes |
| SVG / PNG export | Yes | Yes |
| URL-hash sharing | Yes | Yes |
| Published share URLs (line9.ai/d/…) | — | Yes |
| Watermark on rendered output | Visible | Removed |
| CLI for personal use | Yes | Yes |
| CLI for commercial use | — | Yes |
| Embed-ready output | — | Yes |
| Workspace + team seats | — | From 1 seat |
The personal-use EULA grants a brief commercial-evaluation window so you can render diagrams at work before going Pro. No key, no countdown, no tracking — just honest cover for the natural "try it before we buy" flow.
See the EULA for the exact terms.