An open-source control plane for governed ModelOps.
Fine-tune, evaluate, promote, and serve models as single governed commands — cost-capped before the GPU spins up, policy-gated, paused for human approval where it matters, and audited end to end.
Self-hosted by default: your keys, your GPUs, your logs, nothing leaving your perimeter. A managed cloud is in private beta for teams who would rather not run it themselves — the engine is the same either way.
The failures that hurt are the silent ones — data leakage found after the GPU bill, an eval regression that ships because nothing blocked it, a model in production with no record of who approved it. cairn turns each of those into a loud, gated, audited stop, on the same command you already run.
| cairndev.sh | Overview and early-access waitlist |
| docs.cairndev.sh | Architecture, CLI reference, governance model |
| cairn | The control plane — source opens at release, Apache 2.0 |
cairn is in early access. Join the waitlist for access and release updates, or to ask about the managed private beta.