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
Team — not yet on record
No current team members for Sierra are on record yet. People surface from round filings, company disclosures, and coverage sessions.
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·The complete investor list: 12 names
·Watch Sierra: the Monday email on marks, rounds and moves
