AI/ML
Sierra
Sierra raises $175M Series C at $4.5B valuation
$175M
Total Raised
Series C
Latest Round
2023
Founded
200+
Employees
San Francisco, CA
1 min read
Quick Facts
Valuation
$4.5B
Latest Round Size
$175M
Latest Round Date
September 2025
Sierra: Series C Funding Round
Sierra has successfully raised $175M in Series C funding, reaching a valuation of $4.5B.
Company Overview
Conversational AI platform for enterprise customer service
Funding Details
The Series C round was led by Thrive Capital, with participation from Sequoia, Benchmark.
Company Information
- Headquarters: San Francisco, CA
- Founded: 2023
- Employees: 200+
- Category: AI/ML
Investment
Sierra plans to use the funds to accelerate product development, expand its team, and scale operations globally.
About the Investors
- Thrive Capital: Verified investor in Series C
- Sequoia: Verified investor in Series C
- Benchmark: Verified investor in Series C
Key Investors
Thrive Capital
Lead Investor
Verified investor in Series C
Sequoia
Investor
Verified investor in Series C
Benchmark
Investor
Verified investor in Series C
About the Author
Editorial Team
Curated funding news from verified sources
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