Mercor review: the best way to buy AI training data from real professionals?
Answer in brief: Mercor is the strongest buy-route choice when your data has to come from credentialed professionals: physicians, lawyers, engineers, accountants and consultants. It says it has 5M+ experts, publishes APEX benchmarks built on real professional work, and shows a $90/hr average contracted expert rate. It works more like a marketplace than a managed data factory, so plan to run task design and QA yourself.
Professional-grade expert data. Mercor's site lists open roles such as oncologists at $350–$450/hr. That is the level of expertise it recruits for.
Independent research, checked against Mercor's official site and TechCrunch on 2026-11-09. We have not tested the service.
Where Mercor fits in the five routes
Buy: human data, evals and RL environments made by vetted professionals. License: Mercor also sells off-the-shelf data, and runs a data-monetization program in which enterprises license their workflow data. It says automated anonymization masks 60+ categories of sensitive identifiers and that the business keeps control over what is shared.
Who it fits
- Labs that need expert judgment in law, medicine, finance, accounting or engineering.
- Enterprises building evals against professional standards.
- Teams with their own staff to design tasks and grade output.
Strengths
- Published benchmarks: APEX-SWE (built with Cognition), APEX-Accounting, APEX-Agents, Harvey LAB (1,749 attorney-built legal tasks across 24 practice areas) and Sierra's τ³-Banking.
- Transparent expert rates: a $90/hr average contracted rate, 725k roles created and $4M+ in daily payouts, by Mercor's figures.
- Funding: a $350M Series C at a $10B valuation in October 2025, led by Felicis (TechCrunch). In July 2026 TechCrunch reported talks at a $20B valuation; that was not a completed round.
Honest drawbacks
- A marketplace model: you may need to manage task design and quality control yourself.
- Its revenue figures include payouts to contractors. The CEO's claim of more than $2B in annualized revenue, reported by TechCrunch in July 2026, is a gross figure, not audited.
- No public price list for enterprise data work.
Pricing model
Custom quotes. Costs depend on the expert hourly rates for your domain.
Best alternatives
- Surge AI: managed frontier data with published training results.
- Handshake AI: a large U.S. expert and generalist network.
- Labelbox: the Alignerr network of 2.6M+ contributors.
FAQ
How much do Mercor experts cost?
Mercor's site shows a $90/hr average contracted rate. Specialist roles are listed higher, for example $350–$450/hr for oncologists.
What is Mercor's valuation?
$10B after its $350M Series C in October 2025. In July 2026 it was reported to be in talks at $20B; that round was not reported as completed.
Can my company sell its data through Mercor?
Yes. Mercor's data-monetization program licenses business workflow data, with automated anonymization and the company keeping control over what is shared.
Sources
- mercor.com
- Mercor APEX
- TechCrunch (2025-10-27)
- TechCrunch (2025-09-09)
- TechCrunch (2026-07-09)
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