For healthtech startups
Built for healthtech startups.
In healthtech, a confident wrong answer is a liability. Holdfast builds AI features that stay inside your approved sources and refuse cleanly when they cannot.
Grounded, cited, and willing to refuse
A healthtech AI feature has to answer only from approved documents and say so clearly when the documents do not cover a question. We build the retrieval layer so a grounded, cited answer is the only kind it can produce, and a hard refusal is the default when relevance is low.
Evals designed to make it fail
We test healthtech AI with an adversarial eval set, half of which has no answer in the source documents. The feature has to refuse all of them. We treat the refusal behavior as the deliverable, not a side effect.
Relevant work
Sprints worth reading.
FAQ
healthtech startups, common questions.
No. We build retrieval so answers are assembled only from approved documents, with a hard refusal when relevance is too low.
Sound like your situation?
Send a one-page brief. A fixed price and a ship date back by morning.