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The Late Stage 50 · 2026 edition · #46 of 50

Sierra

Sierra helps businesses build customer experiences with AI agents.

Access late stageBack to the list
US$150m+ARR · Feb 2026
—growth not disclosed
#46rank by disclosed revenue

The figure

Revenue
over $150 million
ARR · Feb 20261Sierra · 6 Feb 2026
In US dollars
US$150m+
as stated
Standing
stated
Company stated
Published
6 Feb 2026
accessed 17 Oct 2026
Evidence
“kicking off our third year with over $150M in ARR.” — as read on the source page1Sierra · 6 Feb 2026
Growth
—
no comparable year-on-year figure: rates over periods shorter than a year, or built on floors or approximations, are not shown

Context

Sector
AI applications
AI customer service agents
IA40 2026
Late · #4
first appearance, 20262IA40 · 19 Oct 2026
Website
sierra.ai
Status
Private as of 17 October 2026
Sitemap blog slugs and about page opened; no IPO of Sierra seen (it acquired Fragment, Opera Tech, Receptive AI, Takeoff).3status check · 17 Oct 2026

Market context

Last round · Forge
Series E (05/04/2026): $81.52 per share, $15.8B post-money valuation, $800M raised
4Forge Global · 20 Aug 2026
Clarity Price
$95.07 per share
6M return +69.37%5Clarity (formerly Hiive)
Last round · Clarity
Series E (May 2026): $15.8B post-money, $81.51 per share, $950M raised
5Clarity (formerly Hiive)

Secondary-market indications are published by Forge Global and Clarity (formerly Hiive) on the dates shown; ratings and margins marked “estimate” are a third party's estimates as reported by the named outlet. None is an offer, and none is part of the ranking.

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References

Every figure on this page, by source.

  1. 1Sierra · 6 Feb 2026sierra.ai/blog/year-two-in-review
  2. 2IA40 · 19 Oct 2026www.ia40.com/the-list/
  3. 3status check · 17 Oct 2026sierra.ai/blog
  4. 4Forge Global · 20 Aug 2026forgeglobal.com/sierra-ai_stock/
  5. 5Clarity (formerly Hiive)www.clarity.com/browse-companies/sierra-stock

Every link was opened on 17 October 2026 and the figure read on the page. Secondary-market indications, where shown, are provided by Forge Global and Clarity (formerly Hiive), are not offers, and play no part in the ranking.