Sierra at a glance
As of- [1] Latest valuation: CNBC, May 4, 2026
- [2] Equity raised: Sum of the 2 sourced equity rounds in the funding history below (debt, tender offers and rumored rounds excluded), May 4, 2026
- [3] Lead investors: CNBC, May 4, 2026
- [4] Founded: Wikipedia (retrieved September 5, 2026)
- [5] Headquarters: Sierra (official site) (retrieved September 27, 2026)
Ranked on: #23 Largest Series C+ Rounds of 2026 (Ranked) · #29 Most Valuable Private Companies 2026 · Get your badge →
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Company Snapshot
Sierra is based in San Francisco, California, USA, founded 2023 by Bret Taylor, Clay Bavor.
Recent changes
- Jun 17, 2026Jun 17, 2026Sierra Raises $350M at $10B -- Bret Taylor's Agent Company Triples in a Year Pulse story
- May 4, 2026May 4, 2026Raised $950M Series E at a $15.8B valuation CNBC
- May 4, 2026May 4, 2026New investor: Tiger Global Management CNBC
- May 4, 2026May 4, 2026New investor: Google Ventures (GV) CNBC
- May 4, 2026May 4, 2026Valuation rose from $10B to $15.8B CNBC
Earlier changes (5)
- Sep 4, 2025Sep 4, 2025Raised $350M Series C TechCrunch
- Sep 4, 2025Sep 4, 2025New investor: Greenoaks TechCrunch
- Sep 4, 2025Sep 4, 2025New investor: Iconiq Capital TechCrunch
- Sep 4, 2025Sep 4, 2025New investor: Thrive Capital TechCrunch
- Sep 2025Sep 2025First reported valuation: $10B CNBC
Funding history
2 equity events · newest first · sources dated per row| Date | Round | Amount | Valuation | Lead investors | Source |
|---|---|---|---|---|---|
| May 4, 2026 | Series E | $950M | $15.8Bpost-money | CNBC | |
| Sep 4, 2025 | Series C | $350M | — | — | TechCrunch |
Equity only. “Equity raised” above sums the rounds with a dated, linked source; rumored rounds, tender offers and secondary sales are listed but not counted, and debt financing is listed separately.
Investors
Latest Pulse
- Aug 11, 2026Decagon Crosses $100M ARR Betting Against Forward-Deployed EngineersDecagon, a three-year-old AI customer-service agent startup valued at $4.5 billion, crossed $100 million in annualized revenue while deliberately avoiding the forward-deployed engineer model rivals like Sierra use to customize deployments.→
- Jun 17, 2026Sierra Raises $350M at $10B -- Bret Taylor's Agent Company Triples in a YearSierra, the customer-service AI agent company from ex-Salesforce co-CEO Bret Taylor, raised $350M at a $10B valuation -- roughly 3x its mark from a year ago. Enterprises are paying for agents that actually resolve tickets, and Sierra is the clearest commercial proof that vertical agents, not chatbots, are where the money is.→
- Jun 16, 2026Salesforce Buys Fin (formerly Intercom) for $3.6B to Supercharge AgentforceSalesforce agreed to acquire Fin -- the AI customer-service agent business formerly known as Intercom -- for $3.6B, folding it into its Agentforce platform. It's a direct bid to own the AI customer-service category before vertical agent startups like Sierra run away with it.→
Coverage Timeline
newest firstAll Coverage
AI
Decagon Crosses $100M ARR Betting Against Forward-Deployed Engineers
Decagon, a three-year-old AI customer-service agent startup valued at $4.5 billion, crossed $100 million in annualized revenue while deliberately avoiding the forward-deployed engineer model rivals like Sierra use to customize deployments.
DEEP DIVE
Sierra Raises $350M at $10B -- Bret Taylor's Agent Company Triples in a Year
FUNDING$350M
Sierra Raises $350M at $10B -- Bret Taylor's Agent Company Triples in a Year
Sierra, the customer-service AI agent company from ex-Salesforce co-CEO Bret Taylor, raised $350M at a $10B valuation -- roughly 3x its mark from a year ago. Enterprises are paying for agents that actually resolve tickets, and Sierra is the clearest commercial proof that vertical agents, not chatbots, are where the money is.
Salesforce Buys Fin (formerly Intercom) for $3.6B to Supercharge Agentforce
BIG TECH$3.6B
Salesforce Buys Fin (formerly Intercom) for $3.6B to Supercharge Agentforce
Salesforce agreed to acquire Fin -- the AI customer-service agent business formerly known as Intercom -- for $3.6B, folding it into its Agentforce platform. It's a direct bid to own the AI customer-service category before vertical agent startups like Sierra run away with it.
Value Add Research
Related Companies
Sierra FAQ
What is Sierra's valuation?
Sierra was last valued at $15.8B in its May 2026 Series E, according to CNBC (May 4, 2026).
How much has Sierra raised?
Sierra has raised at least $1.3B in equity across 2 sourced funding rounds tracked by Value Add VC. The most recent was a $950M Series E in May 2026 at a $15.8B post-money valuation, reported by CNBC. Debt financing, tender offers and secondary sales are not counted.
Who invested in Sierra?
Lead investors in Sierra's sourced funding rounds include Tiger Global Management and Google Ventures (GV). Per round: its May 2026 Series E was led by Tiger Global Management and Google Ventures (GV).
When was Sierra founded and where is it based?
Sierra was founded in 2023 and is headquartered in San Francisco, California, USA, according to Wikipedia and Sierra (official site).
Sources & methodologyshow
Where these figures come from
- CNBCmajor outlet2 facts
- TechCrunchmajor outlet1 fact
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.