# PolyAI

> PolyAI builds enterprise voice assistants that answer customer calls and handle them end-to-end. The London- and San Francisco-based company spun out of Cambridge's dialogue systems lab in 2017, and now runs AI agents in 18 languages for brands like Marriott, Caesars, PG&E, FedEx and Hopper.

- **Founded:** 2017
- **Headquarters:** London, United Kingdom (US HQ: San Francisco)
- **Founders:** Nikola Mrkšić (Co-founder & CEO), Tsung-Hsien (Shawn) Wen (Co-founder & CTO), Pei-Hao (Eddy) Su (Co-founder & Chief Scientist)
- **Team size:** ~270
- **Products:** PolyAI Voice Assistants, Agent Studio, Proprietary Voice Models
- **Notable:** Resolves 50% of customer service calls end-to-end across enterprise deployments., Voice agents live in 18 languages across 100+ enterprise brands., Raised $206M+ in total funding across four rounds since 2017.

## Products & services

- **PolyAI Voice Assistants** — Customer-led voice agents that resolve inbound calls end-to-end across telephony, web and messaging.
- **Agent Studio** — A platform for designing, tuning and observing enterprise voice agents - launched April 2025.
- **Proprietary Voice Models** — In-house speech recognition, synthesis and dialogue policy stack tuned for high-volume contact centers.

## Achievements

- Resolves 50% of customer service calls end-to-end across enterprise deployments.
- Voice agents live in 18 languages across 100+ enterprise brands.
- Raised $206M+ in total funding across four rounds since 2017.
- Launched Agent Studio in April 2025 - a control plane for generative voice agents.
- Backed by NVIDIA's venture arm in the December 2025 Series D.

## Latest updates

- **2025-12** — Closed $86M Series D led by Georgian, Hedosophia and Khosla; $750M valuation.
- **2025-07** — Microsoft published case study on PolyAI's production deployment workflow on Azure.
- **2025-04** — Launched Agent Studio - a voice-first, omnichannel platform for building enterprise voice agents.

## Links

- Website: https://poly.ai
- LinkedIn: https://www.linkedin.com/company/polyai
- Twitter/X: https://twitter.com/polyaivoice
- GitHub: https://github.com/PolyAI-LDN
- YouTube: https://www.youtube.com/@polyaivoice
- Facebook: https://www.facebook.com/PolyAIVoice

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Profile page: https://yespress.io/polyai
Published by YesPress — https://yespress.io
Last updated: 2026-05-23