Overview
Decagon builds AI agents that handle customer-support conversations across chat, email and voice. On 27 January 2026 it announced a US$250 million Series D at a US$4.5 billion valuation, roughly triple its valuation six months earlier, led by new investors Coatue Management and Index Ventures[52]. Returning investors include Andreessen Horowitz, Accel, Bain Capital Ventures and Ribbit Capital[52]. The company reported more than 100 new enterprise customers in its past fiscal year, naming Avis Budget Group, Block and Deutsche Telekom, along with Oura Health, Affirm and Chime[52]. Decagon competes directly with Sierra and with established customer-service software vendors, and has not disclosed revenue.
Decagon strengths and limitations
Strengths
- Built-in testing and experimentation tools for agent behaviour
- Reference customers across airlines, telecoms and fintech
- Built-in testing and quality assurance for agent behaviour
- Covers voice as well as text channels
Limitations
- No published pricing or plan structure
- No self-serve option for smaller companies
- No public pricing
- Narrower scope than general-purpose platforms
Appears in
- Best AI Customer Service Software in 2026 #8
- Best Conversational AI Platforms in 2026 #9
- Top 50 AI Companies: 2026 Edition #46
Decagon alternatives and competitors
Alternatives to Decagon: companies ranked in the same lists.
Sierra- Salesforce Sales Cloud
- Recursion Pharmaceuticals
- MiniMax
WhiteFiber
Pony AI
Veritone- WeRide
HubSpot data enrichment
Nscale
Lovable
Skild AI
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