Lambda
Mid (~500)
Scale AI
Large (~1,200)
Best For
Lambda
Best for: Professionals interested in Lambda
Scale AI
Best for: Ambitious builders who want critical AI infrastructure work serving top-tier clients
Ratings
LambdaScale AI
3.6
3.5
Overall
3.7
2.7
Work-Life Balance
3.7
2.9
Culture & Values
3.6
3.5
Comp & Benefits
3.4
2.8
Senior Mgmt
3.4
3.6
Career Opps
👍 72% Recommend
👤 76% CEO Approval (CEO)
👍 56% Recommend
👤 60% CEO Approval (Alexandr Wang)
Culture Values
Lambda only
💎 Strong Comp & Equity
Scale AI only
🌱 Learning & Growth
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate🎯 Direct Product Impact
Pros & Cons
Lambda
- Building the GPU cloud that powers the world’s top AI labs — genuinely impactful infrastructure
- Smart engineering team with strong technical culture and good WLB on most teams
- Management style described as top-down; strategy clarity could be better
- Internal politics and coordination overhead slow things down for some teams
Scale AI
- Building critical AI data infrastructure used by OpenAI, Meta, Microsoft, and the US government
- Strong compensation for engineers — competitive base + equity
- Work-life balance rated 2.7/5 — long hours common during client deadlines
- Culture and values scored 2.9/5 — inconsistent management quality
Bottom Line
Lambda
Lambda — check Glassdoor for detailed reviews.
Scale AI
Choose Scale AI if you want to build data infrastructure for OpenAI and the US government — but expect long hours and inconsistent management.
Open Roles
Lambda — 32 jobs
💻 Engineering
14
💰 Finance
6
📋 Product
4
👤 HR / People
2
⚖️ Legal
1
Scale AI — 175 jobs
💻 Engineering
64
🧠 ML / AI
25
📋 Product
16
💼 Sales / GTM
14
⚙️ Operations
7
⚖️ Legal
5
📣 Marketing
4
📊 Data
2
💰 Finance
2
👤 HR / People
2
🎨 Design
1
🎧 Support
1
Summary
Lambda scores 3.6/5.0 on Glassdoor with a 3.7 work-life balance rating. Scale AI scores 3.5/5.0 overall with a 2.7 WLB. That’s a 0.1-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate, Direct Product Impact. Lambda also emphasizes Strong Comp & Equity. Scale AI also emphasizes Learning & Growth.
On the hiring front, Lambda has 32 open roles and Scale AI has 175 open roles.