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DecagonAI customer-service agents for consumer brands; head-to-head with Sierra in the agentic-CX category
Valuation (Jan 2026 Series D)
$4.5B
tripled from $1.5B (Jun 2025) in under six months
Annualized Revenue (early 2026)
~$35M
100+ enterprise customers signed in 2025
Time Founded to Unicorn
~21 months
Apr 2023 founding to Jan 2025 Series B at $850M; among fastest in modern AI
Customer Base
100+ enterprise brands
Notion, Eventbrite, Bilt, Duolingo, Rippling, Square, ClassPass, Substack as references
Total raised: ~$481M · Latest valuation: $4.5B
| Round | Date | Amount | Valuation | Key Investors |
|---|---|---|---|---|
| Seed | 2023 | Undisclosed | - | A.CapitalAndreessen Horowitz |
| Series A | Sep 2024 | $35M | $250M | Andreessen Horowitz (lead)A.CapitalA* Capital |
| Series B | Jan 2025 | $65M | $850M | Bain Capital Ventures (lead)Andreessen HorowitzAccel |
| Series C | Jun 2025 | $131M | $1.5B | Andreessen Horowitz (lead)Bain Capital VenturesAccelSlack Fund |
| Series D | Jan 2026 | $250M | $4.5B | Coatue (co-lead)Index Ventures (co-lead)ChemistryVCDefinition Capital+6 more |
| Tender Offer | Mar 2026 | First tender | $4.5B | Employee + investor liquidity at the Series D valuation |
| Product | Type | Status |
|---|---|---|
| Decagon AI Agent | AI customer-service agent (chat + email + voice) | GA |
| Agent Lab | Visual agent design + workflow builder | GA (Mar 2025) |
| Workflows | Multi-step automated CX workflows with audit + replay | GA |
| Decagon Voice | Phone-channel voice agents (sub-second latency) | GA |
| Agent Outcomes | Outcome-based pricing tied to resolution / CSAT / containment | GA |
Seed, Series A, Series C lead investor; continued participation through Series D.
Co-led the Jan 2026 Series D at a $4.5B valuation.
First production-scale deployments in 2024; consumer-brand reference customers.
Expanded customer roster across consumer-app, payroll, payments, and fitness verticals.
Series C investor; Slack distribution + integration synergies.
Model-agnostic; routes per task between OpenAI and Anthropic frontier models.
Jesse Zhang (ex-Lawyaw, Y Combinator) and Ashwin Sreenivas (ex-Helia) launch Decagon
Bilt Rewards, Eventbrite, Notion, Substack go live with Decagon's AI customer-service agents
Andreessen Horowitz leads $35M; first priced round
Bain Capital Ventures leads $65M; 14 months from founding to near-unicorn
Visual agent design + multi-step workflow product released; targets enterprise CX teams
$131M raise; customer roster expands to 50+ enterprises including Duolingo, Rippling, Square, ClassPass
$250M co-led by Coatue and Index; triples the valuation in under six months after signing 100+ enterprise customers in 2025
Completes its first employee + investor tender at the $4.5B valuation
AI customer-support agents for digital-native companies. Customers include Notion, Klarna, Rippling. Series B raised $65M at a $650M valuation in 2024 led by Bain Capital Ventures; later marks at over $1.5B reported. Decagon was founded in 2023, is headquartered in San Francisco, CA and employs ~200.
Decagon has raised ~$481M in total at a $4.5B valuation, based on the funding rounds Sterling tracks.
Sterling groups Decagon in the AI Software sector, alongside Harvey (private), Sierra (private), SoundHound AI (SOUN), Veritone (VERI) and Axon Enterprise (AXON).
If you are researching Decagon, also look at SoundHound AI (SOUN), Veritone (VERI) and Axon Enterprise (AXON). You can compare all of them side by side or browse the full AI Software sector on Sterling.
