Four engineering teams at different scales, using Cinnamon for slightly different things.
Our flake rate went from about 12% of PRs blocked by flakes to under 2% in six weeks. Cinnamon's quarantine flow gave us permission to move flakes out of the critical path without pretending we'd fix them Right Now. The quarantined tests are now on a specific board with named owners; we're actually fixing them at a healthy cadence.
We cut our GitHub Actions bill by £3,400 a month by moving four specific jobs to self-hosted runners, based on Cinnamon's cost breakdown. Nobody on the team had realised those specific jobs — three integration test suites and one nightly e2e — were 40% of the bill. The finance team now checks the Cinnamon monthly cost PDF instead of the GitHub invoice.
We used to lose an hour a day between us to reading GitHub Actions logs. Cinnamon's PR-comment failure summary reduced that to about ten minutes total. The team also stopped context-switching to the browser to check CI — everything they need is in the PR they were already looking at.
We're regulated, so anything watching our CI has to sit in our infrastructure. Cinnamon's Enterprise self-hosted deployment took a week of our platform team's time to stand up, then it's been running for eleven months without our team having to touch it. Their onboarding call was properly technical — no sales fluff.
Free for teams under 10 developers, forever. First flake surfaces within a week.