# Decagon raises $250M Series D at a $4.5B valuation

Canonical page: https://technooptimist.io/stories/decagon-raises-250m-series-d-at-a-4-5b-valuation-4236bc3f
Date: 27 Jan 2026
About: [Decagon](https://technooptimist.io/companies/decagon.md) · [Decagon agents](https://technooptimist.io/ai/decagon-agents.md)
Original source: https://decagon.ai/blog/series-d-announcement

Decagon raised $250 million led by Coatue and Index Ventures, tripling its valuation to $4.5 billion in under six months. It added more than 100 enterprise customers in the past fiscal year, including Avis Budget Group, Block and Deutsche Telekom.

## Key facts

- New investors ChemistryVC, Definition Capital and Starwood Capital; a16z, Accel and Bain Capital Ventures returned.
- Pitch: an always-on AI concierge across voice, chat and email.
- Procedures written as Agent Operating Procedures are its core building tool.

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