Benchmarkconfirmed
APEX
An expert-authored benchmark of economically valuable tasks in finance, consulting, law, and medicine.
Public / Open
EnvIndex catalog pageIncumbentCatalog available · 1
Mercor
Expert marketplace powering evals and RL environments for frontier labs
Mercor connects AI labs with vetted domain experts for model training, evaluations, and RL environments across coding, healthcare, law, and other domains. Customers include OpenAI, Meta, and Anthropic, and it reached a ~$450M run rate in 2025. It has acquired RL-environment startups Sepal AI and Deeptune.
APEX benchmark; reported in talks (July 2026) to raise $500M at $20B valuation; founders became youngest self-made billionaires
| Website | mercor.com |
|---|---|
| Domains | Multi-Domain, Data Labeling, RLHF |
| Location | San Francisco |
| Team size | 250+ |
| Founded | 2023 |
| Funding | Series C, $350M at $10B valuation (Oct 2025) |
| Raising | Reported yes · re-verification required |
| Founders | Brendan Foody @BrendanFoody, Adarsh Hiremath, Surya Midha |
Capability coverage
Focus areas and technical capabilities are shown separately. Missing technical evidence remains Unknown.
Catalog-evidenced technical capabilities
Expert authoredHuman in the loop
Capability catalog
Products and services supported by official company materials. Reviewed 2026-08-16.
Environments & datasets
Verified public artifacts and documented private commercial inventory.
Benchmark
APEX
An expert-authored benchmark of economically valuable tasks in finance, consulting, law, and medicine.
Mercor · 100% completeConfirmed
Sources
- 1. Mercor Research - APEX ↗Mercor · accessed 2026-08-16
- 2. APEX dataset ↗Mercor · accessed 2026-08-16
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