Anthropic
Mid (~1,500)
Sierra
Large (~500)
Best For
Anthropic
Best for: Safety-minded researchers who want mission-driven work with top-tier comp
Sierra
Best for: Builders who want to work with proven Salesforce and Google leadership on enterprise AI agents
Ratings
AnthropicSierra
4.4
4.0
Overall
3.7
3.5
Work-Life Balance
4.5
4.1
Culture & Values
4.8
4.0
Comp & Benefits
4.2
3.8
Senior Mgmt
4.0
3.8
Career Opps
👍 95% Recommend
👤 93% CEO Approval (Dario Amodei)
👍 80% Recommend
👤 84% CEO Approval (Bret Taylor)
Culture Values
Anthropic only
🤖 Ethical AI / Safety💜 Mission-Driven
Sierra only
🚀 Ship Fast & Iterate
Shared
🌱 Learning & Growth💎 Strong Comp & Equity⚙️ Engineering-Driven
Pros & Cons
Anthropic
- Mission-driven to the core — the safety focus is genuine and deeply embedded
- Incredible autonomy and ownership, even for mid-level engineers
- High-intensity environment — extended work hours are common during peak periods
- Processes still catching up to hypergrowth; some things feel ad-hoc
Sierra
- Elite founders with proven track records
- Strong equity at $10B valuation
- In-person-first culture
- Competitive intensity may not suit everyone
Bottom Line
Anthropic
Choose Anthropic if you want genuine AI safety mission, elite comp, and high autonomy — but expect intense hours.
Sierra
Choose Sierra if you want elite founders (Bret Taylor, Clay Bavor) and strong equity at a $10B enterprise AI company — but it's in-person-first and the competitive intensity won't suit everyone.
Open Roles
Anthropic — 447 jobs
💼 Sales / GTM
122
💻 Engineering
119
🧠 ML / AI
49
📣 Marketing
24
📋 Product
19
⚙️ Operations
17
⚖️ Legal
12
💰 Finance
7
📊 Data
5
👤 HR / People
4
🎨 Design
3
🎧 Support
2
Sierra — 134 jobs
💻 Engineering
42
💼 Sales / GTM
27
📋 Product
15
👤 HR / People
7
🎨 Design
5
⚖️ Legal
5
📣 Marketing
5
⚙️ Operations
5
📊 Data
2
💰 Finance
1
Summary
Anthropic scores 4.4/5.0 on Glassdoor with a 3.7 work-life balance rating. Sierra scores 4.0/5.0 overall with a 3.5 WLB. That’s a 0.4-point gap on overall satisfaction.
Both companies share these culture values: Learning & Growth, Strong Comp & Equity, Engineering-Driven. Anthropic also emphasizes Ethical AI / Safety, Mission-Driven. Sierra also emphasizes Ship Fast & Iterate.
On the hiring front, Anthropic has 447 open roles and Sierra has 134 open roles.