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PolyAI

Category: Voice / Speech AI

A leading provider of lifelike voice AI agents for enterprise customer service that builds conversational assistants to automate complex customer support interactions. PolyAI was founded in 2017. The company is led by Nikola Mrkšić. Based in London, United Kingdom. Team size: 101-250. Total funding raised: $206.0M. Latest round: Series D ($86.0M, Dec 2025). Key investors include ["Georgian","Hedosophia","Khosla Ventures","NVentures (NVIDIA)","British Business Bank","Point72 Ventures","Amadeus Capital","Passion Capital"].

Founded
2017
Headquarters
London, United Kingdom
Team size
101-250
Total funding
$206.0M

Value proposition

Automates up to 90% of customer service inquiries through natural, human-like voice conversations, reducing operational costs while delivering consistent, on-brand customer experiences at scale.

Products and solutions

["Agent Studio Platform (voice-first omnichannel conversational AI platform)","Enterprise Voice AI Agents","QA, Analyst, and Builder Agents (agentic AI team)","Conversational AI Solutions for specific industries","Integration with existing CRM and contact center stacks"]

Unique value

Voice-first approach in a chat-dominated market, combining proprietary machine learning with generative AI to create lifelike voice assistants optimized for enterprise customer service.

Target customer

Large enterprises with high-volume contact centers in regulated industries (banking, healthcare, hospitality, utilities, insurance, retail)

Industries served

["Banking & Financial Services","Healthcare","Hospitality & Travel","Utilities & Energy","Insurance","Retail & E-commerce","Telecommunications","Automotive","Manufacturing","Logistics & Transportation"]

Technology advantage

Proprietary technology combining advanced spoken language processing, retrieval and generative AI models, and enterprise-grade safety features; unique dataset of human-to-AI conversations with outcomes tailored for customer service domain.

How they differentiate

Voice-first approach with proprietary technology combining advanced spoken language processing, retrieval and generative AI models, and enterprise-grade safety features; unique dataset of human-to-AI conversations specifically tailored for customer service; end-to-end managed service model for enterprise voice AI.

Main competitors

["Replicant","Retell AI","Cognigy"]

Key partnerships

["AWS (strategic collaboration)","Microsoft (AppSource partnership)","Twilio (integration and deployment)","OpenTable (hospitality integration)","Shared Services Connected Ltd (contact center solutions)"]

Notable customers

["Marriott","Caesars Entertainment","PG&E","UniCredit","FedEx","Allstate","Foot Locker"]

Major milestones

["Series D funding of $86M in December 2025 valuing company at $750M","Recognition in multiple 2025 Gartner Hype Cycle reports for Customer Service, CRM, and Strategic Cost Optimization","391% ROI documented in Forrester Total Economic Impact study","11 patents filed according to CB Insights data","Serving 100+ enterprise customers across multiple industries"]

Growth metrics

Revenue grew from $8.9M (2024) to $15M (2025); 100+ enterprise customers; 391% ROI for customers according to Forrester study; 83% faster call routing

Market positioning

Enterprise-focused voice AI specialist for large organizations in regulated industries requiring multilingual, high-containment voice assistants that integrate with contact center infrastructures; positioned as the world's most lifelike voice AI agents for customer service.

Geographic focus

Global with strong presence in North America and Europe (headquartered in London, UK with US operations)

Patents and IP

11 patents filed (per CB Insights)

About Nikola Mrkšić

PhD in Machine Learning from University of Cambridge; first engineer at VocalIQ (acquired by Apple to improve Siri); previously worked on Apple's Siri team; expertise in natural language processing and dialogue systems

Official website: