Cognition
Medium (~300)
Synthesia
Mid (~660)
Best For
Cognition
Best for: Elite engineers who want to build frontier AI coding agents and own a meaningful equity stake
Synthesia
Best for: Engineers who want to build cutting-edge generative AI video at a fast-scaling London unicorn with a genuinely low-ego culture
Ratings
CognitionSynthesia
3.8
4.4
Overall
3.2
4.2
Work-Life Balance
3.9
4.5
Culture & Values
3.8
4.4
Comp & Benefits
3.6
4.2
Senior Mgmt
3.6
4.2
Career Opps
👍 76% Recommend
👤 80% CEO Approval (Scott Wu)
👍 88% Recommend
👤 92% CEO Approval (Victor Riparbelli)
Culture Values
Cognition only
💎 Strong Comp & Equity
Synthesia only
🌱 Learning & Growth🤝 Flat Hierarchy🧩 Wears Many Hats
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate🎯 Direct Product Impact
Pros & Cons
Cognition
- Elite engineering team with strong equity
- Cutting-edge AI agent work
- High-intensity startup pace
- In-person SF expectations
Synthesia
- Low-ego supportive culture with genuine trust and ownership
- Fast-paced growth with real opportunity to develop and lead
- R&D and Product teams feel intense pressure and WLB suffers
- Promotions rare internally — new roles favor external hires
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.
Synthesia
High-growth AI company with strong culture ratings and real employee trust, though R&D teams feel the pace and promotions skew toward external hires.
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
Synthesia — 76 jobs
💼 Sales / GTM
24
💻 Engineering
11
🎨 Design
6
🧠 ML / AI
6
📣 Marketing
4
📊 Data
3
👤 HR / People
3
📋 Product
2
🎧 Support
2
⚙️ Operations
1
Summary
Cognition scores 3.8/5.0 on Glassdoor with a 3.2 work-life balance rating. Synthesia scores 4.4/5.0 overall with a 4.2 WLB. That’s a 0.6-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate, Direct Product Impact. Cognition also emphasizes Strong Comp & Equity. Synthesia also emphasizes Learning & Growth, Flat Hierarchy, Wears Many Hats.
On the hiring front, Cognition has 62 open roles and Synthesia has 76 open roles.