Sierra vs Vapi: Revenue, Funding & Team Size Compared
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Sierra generates $200M in revenue; Vapi generates $8M. Sierra is 25× bigger than Vapi by revenue. The table below compares Sierra and Vapi on funding, valuation, customers, team size and headquarters — every figure GetLatka has verified for each company.
| Company |  SierraThis company |  Vapi |
|---|---|---|
| Revenue | $200M | $8M |
| Valuation | $15.8B | $500M |
| Funding raised | $1.6B | $50M |
| Team size | 700 | 100 |
| Growth | 100% | 77.8% |
| Founded | 2023 | 2023 |
| HQ | San Francisco, United States | San Francisco, United States |
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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.
Vapi at a glance
Vapi generates $8M in revenue with 100 employees, headquartered in San Francisco, United States.
- Revenue
- $8M
- Valuation
- $500M
- Funding
- $50M
- Team size
- 100
- Founded
- 2023
Voice AI for developers.
Other Sierra alternatives
Sierra competes with more than the companies on this page. Browse the full alternative lists to compare revenue, funding and team size across the category.
Sierra vs Vapi: frequently asked questions
Is Sierra or Vapi bigger?
Sierra is the bigger company by revenue, at $200M against $8M for Vapi.
How much revenue does Sierra make?
Sierra generates $200M in annual revenue with a team of 700.
How much revenue does Vapi make?
Vapi generates $8M in annual revenue with a team of 100.
How much funding has Sierra raised?
Sierra has raised $1.6B in total funding since it was founded in 2023.
How much funding has Vapi raised?
Vapi has raised $50M in total funding since it was founded in 2023.