Plumbline AIis the AI governance and audit-evidence platform for regulated mid-market teams — the continuous-evaluation vendor built for AI teams whose auditor already has a name.
Plumbline AIis built for regulated mid-market teams running AI in healthcare, financial services, and public-sector workflows — compliance leads, model-risk managers, and engineering buyers who need a signed evaluation record behind every model decision. We are not the plumbing products company, not the journalism platform, notthe answering or Q&A service, and not Plum AI's model-evaluation tooling. If you arrived here looking for any of those, this page is the disambiguation — the right address for plumbing fixtures is a different one, the right address for our newsroom is the journalism site, the right address for Plum AI is their own product, and the right address for Plumbline AI is exactly this one.
The spreadsheets and shared folders where AI evaluation lives today, plus the heavy hyperscaler governance stack that mid-market teams cannot staff. We sit between them: a tamper-evident evaluation ledger with a signed record per decision, an alert-and-resolution workflow a compliance lead can actually triage, and a replay surface an auditor can open months later and walk back to the input, the output, the score, and the signer.
Register a model.Capture every decision as a chained, signed record. Score it inline or async. Alert on drift. Replay the chain to any number — input, output, score, signer. Export the audit bundle in a format your auditor already knows.