Decagon AI, backed by top venture capital firms, has raised $131 million in Series C funding, bringing its total raised to $231 million within a year after emerging from stealth mode to enhance its AI customer support agents using advanced conversational AI and natural language processing technologies.

In a market saturated with support automation tools, Decagon AI stands out by delivering full-service AI customer support agents capable of handling complex interactions across multiple channels, including chat, email, phone, and SMS. Unlike typical bots, Decagon AI’s agents go beyond scripted answers; they reason, take action, and even update internal knowledge bases, all while continuously improving based on user feedback.

These AI agents operate 24/7, providing consistent, real-time support that mirrors the responsiveness of a human agent, but at a larger scale. They integrate both natural language processing and custom business logic, offering companies unmatched control and personalization.

“It’s a completely new way for consumers to interact with every brand. We believe the future of customer experience is proactive, and more than that, it’s authentic, intelligent and truly satisfying,” said Jesse Zhang, Co-founder and CEO of Decagon.

Inside the $131M Series C Funding Round of Decagon AI

Led by venture capital giants Andreessen Horowitz and Accel, the Series C funding attracted enthusiastic participation from returning investors, including Bain Capital Ventures, BOND, and A*, alongside new backers such as Avra, Ribbit Capital, and Forerunner. The round was oversubscribed by more than 5x, reflecting high investor confidence in Decagon AI’s product-led approach and market potential.

The new funding values the company at $1.5 billion, solidifying its unicorn status and placing it among the best-capitalized startups in the AI-powered customer service space. This infusion will help grow Decagon AI’s engineering and go-to-market teams, invest in research, and expand enterprise deployments globally.

“We’re at a defining moment for AI agents, with massive demand specifically in the customer experience sector. Decagon has the technical prowess, focus, and expertise to lead this market, and this latest round is a testament to that,” said Sarah Wang, General Partner at a16z Growth.

The Power of Agent Operating Procedures (AOPs)

Central to Decagon AI’s edge is its proprietary Agent Operating Procedures (AOPs). The framework blends natural language processing with programmable logic. AOPs empower customer experience managers to adjust AI agent behavior in real-time using natural language. At the same time, engineering teams retain complete control over backend rules and logic.

This dual-layer system drastically reduces deployment timelines. Brands can launch AI customer support agents within weeks, not months, without relying on expensive professional services or system integrators. AOPs also provide businesses with real-time performance visibility, enabling safe experimentation and rapid iteration.

“Decagon’s relentless focus on customer outcomes and differentiated approach to human-agent collaboration make them a breakout leader in AI agents for customer experience,” said Ivan Zhou, Partner at Accel. “They’ve become the trusted AI partner for leading enterprises like Hertz, and are accelerating the way every company engages their customers with AI.”

Results that Speak for Themselves

Leading global brands, including Hertz, Duolingo, Eventbrite, Chime, Notion, and Bilt, already utilize Decagon AI’s technology. Chime, for instance, cut its contact center costs by over 60 percent while doubling its Net Promoter Score after deploying Decagon AI’s agents.

Over the past year, Decagon AI scaled from zero to eight figures in annual recurring revenue and quadrupled its customer base. Today, its platform powers support for tens of millions of end users, with AI agents executing critical tasks like processing refunds, handling identity verification, and managing escalations with speed and accuracy.

CEO Jesse Zhang envisions a world where every brand offers a dedicated AI agent that knows its customers deeply and acts intelligently on their behalf. With this round of Series C funding, Decagon AI will accelerate innovation and help businesses worldwide deliver personalized, scalable, and profoundly human support.

“We’ve always believed that success comes from matching execution with the right market,” said Jesse Zhang, Co-founder and CEO of Decagon. “Brands see the massive opportunity AI agents bring to customer experience, and they want a partner who can help them capture that opportunity. This funding reflects the very real, growing demand for what Decagon delivers.”

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