Sierra

Business/Productivity Software · San Francisco, CA · Founded 2023 · Privately Held (backing)

Developer of a conversational artificial intelligence platform intended to empower enterprises with AI agents. Sierra is based in San Francisco, CA and was founded in 2023. It was valued at $10 billion at its later-stage round in Sep 2025, the last priced event on record. It has raised $635 million across 1 recorded round; the latest was a $175 million Series C in Nov 2024.

PMV mark · valuation
$10.0B
Oct 2026
Priced at
its later-stage round
Sep 2025
Total raised
$635.0M
Last round
Later Stage VC (Series C)
Nov 2024

Who backs Sierra?

12 investors
InvestorType
Sequoia CapitalVenture capital
SV AngelVenture capital
SoftBank Investment AdvisersGrowth equity
Thrive CapitalVenture capital
Greenoaks Capital PartnersVenture capital
ICONIQ GrowthVenture capital
Benchmark Capital HoldingsVenture capital
Conviction PartnersVenture capital
Comcast VenturesVenture capital
Singtel Innov8—
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Sierra investors

12 investors are on record for Sierra, including Sequoia Capital, SV Angel, SoftBank Investment Advisers and Thrive Capital. By type, the record holds 9 venture capital firms, 1 family office and 1 growth equity firm. The Series C in Nov 2024 drew 5 investors.

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