PolyAI

Active#46 in United Kingdom

Voice AI agents that answer and resolve customer phone calls for banks, retailers, hotels and utilities.

AI›voice agents for customer service poly.ai

Founded2017

HQLondon

RaisedUSD 200M+

Last roundSeries D · Dec 2025

Country of originUnited KingdomListed in the United Kingdom ranking

Where would you invest?United KingdomJurisdiction as cited by the ranking

Uback rankings

How the AI ranks →

Ranking	Tier	Rank	Edition	Next update
United Kingdom · all sectors	Top 50	#46	Edition 0 · October 2026	3 Jan 2027

Rank historyOct 2026 · #46First edition: no movements yet.

Estimated valuation

AI · United Kingdom ranking

≈ USD 750MUSD 600–940M · Hundreds of M$

Hundreds of k$

Millions $

Tens of M$

Hundreds of M$

Unicorn

Decacorn

Hectocorn

Anchor: Last known equity round: Series D · USD 86M · Dec 2025
Published valuation: USD 750M · Dec 2025
AI adjustment: None

An indicative editorial estimate produced by AI, imperfect by nature: neither a financial valuation nor investment advice. Only the market sets a company’s value. Method

Funding history

USD 200M+ raised in total

Date	Round	Amount	Type	Investors
Dec 2025	Series D	USD 86M	Equity	Georgian, Hedosophia, Khosla, NVentures, British Business Bank, Citi

Rounds as cited by Uback’s rankings. Equity, debt and grants are shown separately; only equity rounds count towards the valuation anchor.

Independent analyses

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What the AI reads

Read by the AI at the next edition.

Comparable companies in United Kingdom

Full United Kingdom ranking →

ElevenLabs#2AI › voice generation and voice agentsDecacorn Ineffable Intelligence#8AI › reinforcement-learning research labUnicorn Synthesia#10AI › video generation for companiesUnicorn CuspAI#14AI › materials discoveryUnicorn

Investors in PolyAI: Georgian · Hedosophia · Khosla Ventures · NVentures · British Business Bank · Citi

Last updated: Oct 2026Report an error

Uback is a content publisher and an aggregator of non-binding expressions of interest. It provides no investment advice, receives no mandate and takes part in no transaction. Rankings, ranges and brackets are editorial estimates produced by AI, purely indicative.