Cognition
Medium (~300)
Mercor
Small (~200)
Best For
Cognition
Best for: Elite engineers who want to build frontier AI coding agents and own a meaningful equity stake
Mercor
Best for: Engineers who want to build AI hiring infrastructure at a $10B rocketship with extreme ownership and MIT-founder energy
Ratings
CognitionMercor
3.8
3.9
Overall
3.2
3.9
Work-Life Balance
3.9
3.6
Culture & Values
3.8
4.0
Comp & Benefits
3.6
3.5
Senior Mgmt
3.6
3.7
Career Opps
👍 76% Recommend
👤 80% CEO Approval (Scott Wu)
👍 74% Recommend
👤 82% CEO Approval (Brendan Foody)
Culture Values
Cognition only
🎯 Direct Product Impact
Mercor only
🤝 Flat Hierarchy
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate💎 Strong Comp & Equity
Pros & Cons
Cognition
- Elite engineering team with strong equity
- Cutting-edge AI agent work
- High-intensity startup pace
- In-person SF expectations
Mercor
- Massive impact at an AI company growing at breakneck speed
- Top-tier compensation with strong equity at $10B valuation
- Intense 9/9/6 work schedule — long hours are the norm
- Work-life balance is a real sacrifice at this stage
Bottom Line
Cognition
Choose Cognition if you want world-class AI agent research (makers of Devin) with strong equity upside — but expect top-tier intensity and mandatory in-person in San Francisco.
Mercor
Choose Mercor if you want outsized impact on AI-era hiring at a tiny, fast-moving team — but the 9/9/6 schedule is real, and work-life balance is genuinely sacrificed for speed.
Open Roles
Cognition — 62 jobs
💻 Engineering
21
💼 Sales / GTM
10
📊 Data
3
⚖️ Legal
2
⚙️ Operations
2
💰 Finance
1
👤 HR / People
1
📣 Marketing
1
🧠 ML / AI
1
Mercor — 49 jobs
💻 Engineering
20
🧠 ML / AI
6
💼 Sales / GTM
5
👤 HR / People
3
📊 Data
2
📣 Marketing
2
📋 Product
2
🎨 Design
1
⚙️ Operations
1
Summary
Cognition scores 3.8/5.0 on Glassdoor with a 3.2 work-life balance rating. Mercor scores 3.9/5.0 overall with a 3.9 WLB. That’s a 0.1-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate, Strong Comp & Equity. Cognition also emphasizes Direct Product Impact. Mercor also emphasizes Flat Hierarchy.
On the hiring front, Cognition has 62 open roles and Mercor has 49 open roles.