Choose by the size of your company.
To get started, hosted effortlessly.
When you work as a team.
What your IT department expects.
What the auditor and the CISO require.
What’s yours is never billed.
The full core of Kastel, on your infrastructure. Your data behind your walls, and you decide who sees them.
Install on your serverFrequently asked questions
Two options, both on your own infrastructure and in your own region: host Kastel Core yourself on your own servers, the full core, for free, or Kastel Enterprise (paid) for compliance, audit and SSO. Your data stays with you, wherever you are. Our managed hosting is in Europe: that is the only mode we operate ourselves. Everywhere else, you operate it, and that is exactly what makes your sovereignty verifiable.
Never. Your data and your context belong to you. A full export in one command, at any time, and you take back control by hosting your Kastel yourself on your own servers whenever you want.
You do, with your own keys (BYOK). Kastel never resells inference and takes no margin on it. Our bill covers hosting and operation, not your model usage.
Monthly, no commitment, cancel any time. And the full core self-hosted stays free.
In Europe, on an isolated instance dedicated to your company, with a sovereign European host. We never have access to your data.
What each plan unlocks.
The core is free and complete; Managed and Enterprise add collaboration, scale governance and compliance.