Expert capacity, built for AI programs

The problem

Frontier and vertical models now fail in professionally recognizable ways. The output is fluent. The error is a missed contraindication, an invalid legal inference, a model that does not reconcile, a citation that does not support the claim, or a patch that does not solve the ticket. Those errors are cheap to ship if the people scoring the work cannot see them.

Why marketplaces are a weak fit

Traditional freelancer marketplaces make enterprise teams individually find and manage professionals. That can work when the buyer needs one contractor for a bounded deliverable. It becomes an unofficial recruiting desk when the buyer needs a dozen licensed nurses, a jurisdiction-specific legal panel, or a rotating set of senior engineers on a weekly hour commitment.

Why traditional staffing is a weak fit

Traditional staffing is designed around hiring people into jobs. AI training and evaluation programs usually need project capacity: a written expert profile, a qualification bar, a start date, and a way to replace or scale without opening requisitions. The researcher should keep the methodology. Someone else should keep the workforce mechanics.

What this company does

Stratum provides managed expert workforces for AI training, evaluation, data annotation, benchmark creation, and post training across medicine, law, finance, science, engineering, and software.

The buyer defines the expertise, credentials, experience, geography, volume, duration, and evaluation requirements. We source from a professional network, verify, qualify, onboard, contract, coordinate, replace, and monitor. The client retains control of data, evaluation methodology, rubrics, quality thresholds, AI systems, and final acceptance. We are not a freelancer marketplace or traditional staffing company.

What we do not claim

This page does not publish a headcount of professionals, a customer logo wall, revenue figures, turnaround guarantees, or compliance certifications. Those statements will appear when they are true and inspectable. Until then, the offer is a process: a specification in, a managed cohort out, with the client still in control of the work product.

Who the site is for

The site is written for buyers: AI companies, data companies, research labs, enterprise AI teams, and vertical model developers who already know they need professionals. It is not written for people looking for annotation jobs. If that channel is added later, it will be kept off the primary buyer information architecture.