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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
What is Sierra worth?
$10.0BPrivateMarketView mark · Oct 2026

Valued at $10.0B at its later-stage round, Sep 2025. Nothing has traded since.

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Valuation timeline

0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026
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Sierra funding history

1 rounds
DateRoundRaisedPost-money
Nov 2024Later Stage VC (Series C)$175.0M▮
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Sierra valuation

Sierra was valued at $10 billion at its later-stage round in Sep 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Sierra raised?

Sierra has raised $635 million in total; 1 of its rounds is on record. The largest on record was a $175 million Series C in Nov 2024.

Comparable companies

Comparable business/productivity software names by valuation on PrivateMarketView: Notion ($11 billion), Anaplan ($10.4 billion) and Gusto ($9.3 billion).

How Sierra's valuation is determined

Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.

For Sierra, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by its last priced round. Question about this number? Full methodology →

Frequently asked about Sierra

What is Sierra worth?
Sierra is valued at $10.0B as of Oct 2026. Valued at $10.0B at its later-stage round, Sep 2025. Nothing has traded since.
How much has Sierra raised?
Sierra has raised $635.0M in total funding across 1 recorded rounds.
When did Sierra last raise?
Sierra last raised in Nov 2024 (Later Stage VC (Series C)), raising $175.0M.