Mercor
Expert marketplace powering AI training with vetted domain professionals.
What is Mercor?
Mercor is a marketplace that connects vetted domain experts (legal, finance, biotech, consulting, engineering) with AI labs and enterprises that need human intelligence for model training, evaluation, and specialized tasks. The company publishes the APEX benchmark suite (APEX-Agents, APEX-SWE) measuring AI productivity against expert work. Contractors are paid daily.
Recruiting, HR, payroll, talent intelligence, interviewing, onboarding, and people operations tools.
See the full Recruiting & HR guide to compare more tools, buyer criteria, and related workflows.
Use cases to evaluate
Recruit licensed attorneys to red-team a legal AI assistant against jurisdiction-specific edge cases
Hire PhD biologists to grade frontier-model responses on molecular biology benchmarks
Source management consultants for structured reasoning evaluation datasets
Run domain-expert SFT and RLHF pipelines for vertical AI products
Fit to evaluate
AI labs running post-training and evaluation pipelines
Vertical AI startups in legal, medical, or finance verticals
Enterprise AI teams needing licensed-professional review of model outputs
Researchers benchmarking agents against expert-level human baselines (APEX)
Business fit
Right for you if you're building or fine-tuning AI models and need PhD-level or licensed-professional labelers (lawyers, doctors, quants) rather than generic crowd workers. The APEX benchmark provides credibility on talent quality. Skip if you need standard data annotation at commodity prices, or if you're hiring full-time employees rather than contracting specialized evaluation work.
How to evaluate Mercor
Use this category when hiring, onboarding, or HR administration needs more consistency.
Confirm the exact workflow
Map Mercor to one concrete workflow first, such as recruit licensed attorneys to red-team a legal ai assistant against jurisdiction-specific edge cases. Avoid buying before the owner, trigger, output, and success metric are clear.
Check category fit
Compare applicant tracking, interview workflows, payroll, onboarding, and analytics.
Compare practical alternatives
Shortlist Mercor against RemoteOK, Nomads.com, Ashby so the decision is based on fit, effort, and workflow ownership rather than brand recognition alone.
Validate cost and rollout effort
No public buyer-side pricing. Contractor compensation is published as $60-$200/hr for Generalist Experts, $90-$200/hr for Management Consultants, and $100-$150/hr for Senior Legal Experts. Enterprise buyer rates are negotiated directly with Mercor sales. Also confirm implementation time, support needs, and whether the medium setup matches your team.
Compare Mercor with alternatives
Use this quick comparison before booking demos or moving data into a new system.
| Primary workflow | Recruit licensed attorneys to red-team a legal AI assistant against jurisdiction-specific edge cases, Hire PhD biologists to grade frontier-model responses on molecular biology benchmarks |
|---|---|
| Best-fit team | AI labs running post-training and evaluation pipelines, Vertical AI startups in legal, medical, or finance verticals |
| Implementation effort | Medium setup and maintenance profile |
| Pricing check | Contact sales |
| Closest alternatives | RemoteOKNomads.comAshbyGreenhouse |
Mercor pricing
| Model | Contact sales |
|---|---|
| Snapshot | No public buyer-side pricing. Contractor compensation is published as $60-$200/hr for Generalist Experts, $90-$200/hr for Management Consultants, and $100-$150/hr for Senior Legal Experts. Enterprise buyer rates are negotiated directly with Mercor sales. |
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Common questions about Mercor
What is Mercor?
Mercor is a marketplace that connects vetted domain experts (legal, finance, biotech, consulting, engineering) with AI labs and enterprises that need human intelligence for model training, evaluation, and specialized tasks. The company publishes the APEX benchmark suite (APEX-Agents, APEX-SWE) measuring AI productivity against expert work. Contractors are paid daily.
What is Mercor used for?
Common use cases: Recruit licensed attorneys to red-team a legal AI assistant against jurisdiction-specific edge cases; Hire PhD biologists to grade frontier-model responses on molecular biology benchmarks; Source management consultants for structured reasoning evaluation datasets; Run domain-expert SFT and RLHF pipelines for vertical AI products.
How much does Mercor cost?
No public buyer-side pricing. Contractor compensation is published as $60-$200/hr for Generalist Experts, $90-$200/hr for Management Consultants, and $100-$150/hr for Senior Legal Experts. Enterprise buyer rates are negotiated directly with Mercor sales.
Who is Mercor best for?
Mercor fits AI labs running post-training and evaluation pipelines, Vertical AI startups in legal, medical, or finance verticals, Enterprise AI teams needing licensed-professional review of model outputs, Researchers benchmarking agents against expert-level human baselines (APEX). Right for you if you're building or fine-tuning AI models and need PhD-level or licensed-professional labelers (lawyers, doctors, quants) rather than generic crowd workers. The APEX benchmark provides credibility on talent quality. Skip if you need standard data annotation at commodity prices, or if you're hiring full-time employees rather than contracting specialized evaluation work.
What are alternatives to Mercor?
Common alternatives to Mercor include RemoteOK, Nomads.com, Ashby, Greenhouse, Lever, Workable.