Mercor
Marketplace for domain experts powering AI model evaluation, $60-$180/hr
Mercor delivers on high-paying, AI-focused expert work but the 2026 breach and narrow niche limit broader appeal. Ideal for domain experts seeking flexible $100+/hr gigs; AI companies get vetted talent fast. Consider Upwork or Invisible Technologies for alternatives.
- AI companies needing on-demand domain experts for model training and evaluation
- Highly skilled professionals (lawyers, doctors, engineers) seeking $100+/hr AI-adjacent freelance work
- Organizations requiring specialized expertise in legal, medical, or engineering for short-term projects
- Consultants from MBB/Big 5 firms looking for flexible, high-paying project work
- Entry-level or general freelancers seeking diverse, lower-skill projects
- Companies needing full-time, long-term employees rather than project-based contractors
- Professionals in non-STEM fields like arts or humanities (limited opportunities)
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Skip Mercor if you are an entry-level freelancer or a company needing full-time employees.
Buyers must contact sales for pricing; no self-serve tiers.
Mercor's pay is premium ($60-$180/hr) but only for specialized experts. For buyers, pricing is opaque and likely volume-based. Cheaper alternatives include Upwork (variable rates) or Appen (bulk data labeling). Mercor fits AI labs needing rare domain expertise, not budget-conscious teams.
In short
Mercor — Marketplace for domain experts powering AI model evaluation, $60-$180/hr. Best for AI companies needing on-demand domain experts for model training and evaluation, Highly skilled professionals (lawyers, doctors, engineers) seeking $100+/hr AI-adjacent freelance work, Organizations requiring specialized expertise in legal, medical, or engineering for short-term projects. Contact Sales pricing.
What's new in Mercor
Checked 14 days agoAcross the latest 10 updates: 4 feature updates, 1 launch and 5 news mentions.
Update on Mercor security incident
Mercor disclosed a security incident affecting its platform.
Agent Eval Systems
Mercor launched Agent Eval Systems for enterprise AI evaluation.
Why I joined Mercor – Kevin Shiau
Kevin Shiau announced joining Mercor as part of team growth.
The Image Was Normal. AI Saw a Heart Attack.
Research showing AI detecting heart attacks from normal images.
When volume grew 10x in a month and we had one week to fix it
Engineering post on scaling infrastructure to handle rapid volume growth.
When you go from $2 million a month to $2 million a day
Engineering scaling challenge as revenue grew 30x to $2M/day.
AI can't read an investor deck
Research highlighting limitations of AI in understanding investor decks.
Generalization results from training on the APEX-Agents dev set
Research on how 2,000 expert tasks improved tool use and reasoning.
Introducing Mercor Enterprise AI
Mercor launched Enterprise AI product for business customers.
Introducing the AI Productivity Index for Software Engineering
Mercor published a benchmark index for AI productivity in software engineering.
Viability Score
How likely is Mercor to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- Marketplace for domain experts in AI, legal, medical, engineering
- AI Productivity Index (APEX) with APEX-Agents and APEX-SWE
- Hourly pay $60-$180/hr for high-skill roles
- Daily payouts for completed work
- Fast hiring process with hundreds hired recently
- Enterprise data partnerships for custom datasets
- Roles for ChatGPT Power Users and Research Ops
- Management & strategy consultant positions (MBB/Big 5)
- Clinical research experts (chemistry & biology)
- Mechanical engineer expertise roles
- Private equity expert opportunities
- Office-suite experts & administrative roles
- Voice sample collection
- Project-based assignments with flexible scheduling
About Mercor
Mercor is a curated marketplace connecting AI companies with top-tier domain experts for high-skill tasks such as model evaluation, training data generation, and research. Experts in medicine, law, engineering, and consulting can earn $60-$180/hr on project-based assignments, with daily payouts and fast hiring. The platform features the AI Productivity Index (APEX) with APEX-Agents and APEX-SWE sub-benchmarks for benchmarking AI agents. Mercor has created over 1,000 roles and processes daily payouts, with recent openings including Emergency Medicine Expert ($130-$180/hr) and Management & Strategy Consultants ($100/hr). The platform targets AI-adjacent work, attracting professionals from MBB/Big 5 firms and specialized fields. AI companies use Mercor for model validation and evaluation requiring deep expertise. A 2026 data breach affecting 40,000 contractors raises security concerns, but the company is investigating and implementing additional measures. Compared to Upwork for generalist work or Invisible Technologies for managed pipelines, Mercor focuses on high-skill, AI-specific expert roles.
Behind the Verdict
Mercor's niche is both its strength and its weakness. The platform clearly excels for specialists in medicine, law, engineering, and consulting who want high hourly rates with daily payouts — but if you're a general freelancer or in the humanities, opportunities are sparse. The APEX benchmarks are a smart differentiator for AI companies, but the 2026 data breach affecting 40k contractors is a serious red flag for security-conscious users. Compared to Upwork's vast project pool, Mercor offers far higher rates and faster onboarding, but with fewer total roles and less project diversity. In practice, we'd recommend Mercor for domain experts with in-demand skills (especially healthcare, legal, or MBB consulting) who can tolerate the risk of another breach. For AI companies, the vetted talent pool is valuable for model evaluation, but you'll pay a premium. Alternatives like Invisible Technologies provide more managed pipeline control, while Upwork offers lower-cost options for less specialized tasks.
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Real-world workflow fit
Concrete scenarios for the personas Mercor actually fits — and what changes day-one when you adopt it.
Create an account, post a task for board-certified physicians, review applicants, assign a test project, and get feedback within days.
Outcome: Receive expert evaluation of chatbot responses for accuracy and clinical safety, improving the product before launch.
Sign up, pass vetting (submit credentials), browse available roles like 'Legal Expert — Transactional/Corporate', apply, and start labeling contracts for AI training.
Outcome: Earn $100-$150/hr with daily payouts, working on flexible project chunks.
Apply for 'Management & Strategy Consultant' role, complete a brief assessment, then evaluate AI-generated strategy reports for a tech company.
Outcome: Leverage consulting skills to earn $100/hr, with work available on an ongoing basis.
Use Cases
- Label legal documents for AI document understanding systems.
- Provide expert feedback on medical AI to improve clinical decision support.
- Evaluate model-generated equity research reports for accuracy.
- Generate high-quality training data for AI agents in software engineering.
- Assess model performance on professional tasks like consulting analysis.
Models Under the Hood
as of 2026-07-06
Limitations
- Mercor is a marketplace connecting domain experts with AI evaluation projects; work is project-based and not guaranteed.
- The platform disclosed a security incident in July 2026.
- Experts must pass a vetting process, and roles depend on demand from frontier AI labs.
as of 2026-06-24
Where the pricing makes sense
The company stage and team size where Mercor's pricing actually pencils out — and where peers do it cheaper.
Mercor's pay is premium ($60-$180/hr) but only for specialized experts. For buyers, pricing is opaque and likely volume-based. Cheaper alternatives include Upwork (variable rates) or Appen (bulk data labeling). Mercor fits AI labs needing rare domain expertise, not budget-conscious teams.
Setup time & first value
How long it actually takes to get something useful out of Mercor — broken out by persona, not the marketing-page minute.
For experts: sign-up and credential verification takes 1-3 business days. Once approved, you can apply to roles immediately and start within a week. For buyers: account creation and posting a task takes under an hour; hiring can happen in 1-2 days if applicants are available.
Switching to or from Mercor
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From Upwork: Mercor offers higher pay rates ($60-$180/hr vs. variable) and daily payouts, but narrower focus.
- →From Appen: Mercor pays more and targets higher-skill tasks, but has fewer projects.
- →From direct hiring: Mercor reduces recruitment overhead for short-term expert projects.
- ↗To Upwork: If Mercor lacks enough projects in your domain, Upwork offers broader variety.
- ↗To Invisible Technologies: For managed AI training pipelines with more consistent work.
- ↗To Toptal: If you prefer long-term consulting engagements with similar pay.
Resources & Guides
Official links
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