PolyAI vs Sierra: Revenue, Funding & Team Size Compared
PolyAI generates $35M in revenue; Sierra generates $200M. Sierra is 5.7× bigger than PolyAI by revenue. The table below compares PolyAI and Sierra on funding, valuation, customers, team size and headquarters — every figure GetLatka has verified for each company.
| Company |  PolyAIThis company |  Sierra |
|---|---|---|
| Revenue | $35M | $200M |
| Valuation | $525M | $15.8B |
| Funding raised | Not disclosed | $1.6B |
| Team size | 248 | 700 |
| Growth | 250% | 100% |
| Founded | 2023 | 2023 |
| HQ | London, United Kingdom | San Francisco, United States |
Want the full dataset? GetLatka tracks revenue, funding and team history for thousands of SaaS companies, with charts, growth rates and founder interviews.
PolyAI at a glance
PolyAI generates $35M in revenue with 248 employees, headquartered in London, United Kingdom.
- Revenue
- $35M
- Valuation
- $525M
- Team size
- 248
- Founded
- 2023
The leading provider of enterprise AI agents for customer service.
Sierra at a glance
Sierra generates $200M in revenue with 700 employees, headquartered in San Francisco, United States.
- Revenue
- $200M
- Valuation
- $15.8B
- Funding
- $1.6B
- Team size
- 700
- Founded
- 2023
Sierra is the conversational AI platform for businesses. We help companies elevate their customer experience with AI.
Other PolyAI alternatives
PolyAI competes with more than the companies on this page. Browse the full alternative lists to compare revenue, funding and team size across the category.
PolyAI vs Sierra: frequently asked questions
Is PolyAI or Sierra bigger?
Sierra is the bigger company by revenue, at $200M against $35M for PolyAI.
How much revenue does PolyAI make?
PolyAI generates $35M in annual revenue with a team of 248.
How much revenue does Sierra make?
Sierra generates $200M in annual revenue with a team of 700.
How much funding has Sierra raised?
Sierra has raised $1.6B in total funding since it was founded in 2023.