What is included in the Free plan versus the Pro plan.
IOModel has a Free plan you start with and a Pro plan that adds the tooling for connecting the model to your editor, your pipeline, and the real system.
Free does not mean every feature
IOModel Studio is available on the Free plan, but not all of its features are free. Core editing, collaboration, diff, and merge are free; some in-Studio capabilities — running the Compiler and Validator — are part of the Pro plan.
Free vs Pro
| Component | Free plan | Pro plan |
|---|---|---|
| IOModel Studio — edit, collaborate, diff, merge | Yes | Yes |
| Cloud project branches (per project) | 1 | Unlimited |
| Model & spec format | Yes | Yes |
| IDE Extension (preview, IntelliSense, inline compiler) | — | Yes |
| IOModel Compiler (consistency checks) — incl. inside Studio | — | Yes |
| IOModel Validator (model vs reality) — incl. inside Studio | — | Yes |
| IOModel Collector (digital twin in CI) | — | Yes |
Studio itself is free, but only for core authoring, collaboration, and review. Pro features such as the Compiler and Validator are still gated when used inside Studio.
On the Free plan, each cloud project includes one active branch (typically main). Additional branches require the Pro plan.
Start on the Free plan with Studio to build and review the model collaboratively. Upgrade to the Pro plan when you want the model checked against your code and your running system automatically.
What the Pro plan unlocks
Author next to code
The IDE Extension brings preview, IntelliSense, and the compiler into VS Code and Cursor.
Keep the model consistent
The Compiler runs in the editor and CI to catch structural problems early.
Keep the model honest
The Collector builds a digital twin in CI and the Validator flags drift from the design.
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