Mercor
AI talent marketplace that screens experts and supplies them to AI labs
Last reviewed 2026-06-19
Mercor is an AI talent marketplace connecting specialized human experts (engineers, doctors, lawyers, bankers, scientists, consultants) with organizations needing expert knowledge work. It launched as an AI-powered recruiting platform: candidates complete a roughly 20-minute AI interview that assesses skills and builds a profile, and Mercor's models match and rank candidates against open roles, refining predictions with collected performance data. The company has since pivoted its primary business toward supplying vetted human experts to frontier AI labs for model training and evaluation (data labeling, RLHF, reinforcement-learning environments). As of late 2025 it reportedly managed 30,000+ contractors, with reported clients including OpenAI and Anthropic. Mercor also runs APEX, a research and benchmark suite measuring AI productivity on real economic tasks. Its audience spans enterprises and AI labs on the buy side and skilled professionals on the supply side.
What it can do
Run AI candidate screening interviews
SupervisedConducts an automated roughly 20-minute AI interview that evaluates skills and generates a structured candidate profile.
sourceMatch and rank candidates
CopilotParses job descriptions and ranks qualified candidates, refining predictions with collected performance data.
sourceSource experts for AI model training
AssistantRecruits and deploys domain experts to label data and train or fine-tune models for AI labs.
sourceBuild model evaluation pipelines
AssistantConstructs evaluation pipelines and reinforcement-learning environments using expert-generated tasks.
source
Strengths
- +Deep, vetted expert supply (30,000+ contractors) with marquee AI-lab clients
- +Combines AI screening and matching with human expertise, cutting manual sourcing for buyers
- +Strong, fast-growing business backed by top-tier investors
Limitations
- −Major 2026 data breach and multiple class-action lawsuits represent a serious trust and security mark
- −Heavy revenue concentration in a few frontier AI labs creates client-dependency risk
- −AI-interview screening raises fairness and bias questions, and contractor reviews report a stressful environment
Overview
Mercor is an AI talent marketplace founded in 2023. It began as an AI recruiting platform where candidates take a short AI interview and are matched and ranked by models, and has pivoted its primary business to supplying vetted human experts to frontier AI labs for model training and evaluation.
What it does
Mercor's AI interview assesses skills and builds a profile; its models match and rank candidates against roles. For AI labs, it sources domain experts for data labeling, RLHF, and reinforcement-learning environments, and builds evaluation pipelines. It also publishes APEX, a benchmark suite measuring AI productivity on economic tasks, including an agents leaderboard.
Integrations & setup
Its stack includes Stripe for payouts, Hugging Face for dataset hosting, and Calendly for scheduling. No broad public ATS/HRIS connector catalog or public API spec was found.
Pricing
Enterprise and deal-based. Experts reportedly earn $85+/hour on average; there is no public self-serve price.
Best for / not for
Best for AI labs and enterprises that need vetted expert labor at scale, and for skilled professionals seeking flexible expert work. Buyers should weigh the 2026 breach and lab-concentration risk.
Traction and incident
Mercor raised a reported $350M Series C in October 2025 at a $10B valuation (led by Felicis, with Benchmark and General Catalyst). In 2026 a supply-chain attack reportedly exposed a large volume of contractor data, leading to multiple class-action lawsuits; these are reported facts attributed to their sources.
Alternatives
micro1 is the closest AI-interview and human-data competitor; Paradox targets high-volume recruiting automation.
What people are saying
We aggregate real LinkedIn discussion into sentiment for the agents people search most. Mercor isn't tracked yet, want it added? Request tracking.
FAQ
What does Mercor do?+
It runs an AI talent marketplace: candidates take an AI interview and Mercor's models match and rank them for roles. Its primary business is supplying vetted human experts to frontier AI labs for model training and evaluation.
Was there a data breach?+
Yes. A 2026 supply-chain attack reportedly exposed a large volume of contractor data, including interview recordings and personal information, prompting multiple class-action lawsuits. Some clients reportedly paused work in response.
Sources
- Mercor quintuples valuation to $10B with $350M Series C (TechCrunch) · accessed 2026-06-19
- Mercor raises $100M at $2B valuation (TechCrunch) · accessed 2026-06-19
- Mercor (Wikipedia) · accessed 2026-06-19
- AI recruiting platform faces lawsuits over data breach (HR Dive) · accessed 2026-06-19
Last reviewed 2026-06-19