Position in SVTR
Snapshot 2026-10-20- Startup Signals#8of 2,252–
- Enterprise Software#1of 146–
- Customer Support#1of 30–
About
Sierra, founded in 2024 in the United States, provides enterprises with an AI customer service agent platform called Agent OS, serving hundreds of enterprise clients including SoFi, Ramp, and Brex across financial services, healthcare, telecommunications, and retail industries.
Full tier & rationale — an SVTR Intelligence benefit
Timeline
- 2026-07-23M&AAcquired Takeoff
- 2026-05FundingNew funding round$950M
- 2025-09FundingC轮$350M
Public events aggregated from this page; rating changes are member-only.
Capital graph
Founders / core team
Investors
Funding history
- 2026-05$950M
Investors · GV、Tiger Global
- 2025-09Series C$350M
Investors · Greenoaks、Iconiq Capital、Thrive Capital
Source · SVTR Weekly #121 - 2024-10$175M
Investors · Greenoaks、Iconiq Capital、Thrive Capital
Source · SVTR Weekly #077 - 2024-02$110M
Investors · Benchmark、Sequoia Capital
Source · SVTR Weekly #040 - 2024-01$85M
Investors · Sequoia Capital
Source · SVTR Weekly #037 - 2023-06Seed$20M
Investors · Sequoia Capital、Benchmark
Source · SVTR Weekly #007
Comparable companies· by market
In commonSame subsector: Customer service
United States
Latest roundTotal raisedDateChina
Latest roundTotal raisedDateEurope
Latest roundTotal raisedDateConfirmed rounds only. Matched on subsector, sector, stage and funding scale — each verifiable on the company profiles.
M&A deals
- 2026-07AcquirerTakeoffAcquisition
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Investors that may fit
Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.