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Prolific

Human data platform for AI — high-quality participants for model training and research.
AI 📍 London, UK Founded 2014
Current Valuation
Private
PRIVATE

IPO Outlookprivate

Is Prolific going public?
No. Prolific is private and has not filed to go public. There is no S-1 on file.
What is Prolific's valuation in 2026?
No confirmed valuation is on record for Prolific. The roster shows funding and investors where they are public; it does not estimate a mark.
Has Prolific filed an S-1?
No public S-1 is on file for Prolific.
Who are Prolific's investors?
Prolific's investors include Partech, Oxford Science Enterprises.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Prolific is a London-based human-data marketplace founded in 2014 by doctoral researchers Phelim Bradley, Ekaterina Damer, and Jim Moodie. AI developers and academic researchers use it to recruit vetted participants for training data, evaluations, and behavioral studies. Has raised approximately $33M total, with a £25M (~$32M) Series A in July 2023 co-led by Partech and Oxford Science Enterprises.

Company Profile

CEO
Phelim Bradley
Founded
2014
HQ
London, UK
Total Raised
$33.4M
Last Round
Series A — $32M (Jul 2023) · Lead: Partech / Oxford Science Enterprises
IPO Status
private

Fundraising Status

Series A · $32M · 3y 1mo ago
privateTotal raised $33.4M

Latest Funding Round

RoundAmountDateLead InvestorPost-Money
Series A$32MJul 2023Partech / Oxford Science Enterprises—

Vertical Intelligence — AI / ML

No verified Hugging Face organization found for Prolific — no attributable open-model footprint. Closed-weights labs are common; this is a distribution signal, not a capability judgment.
Checked huggingface.co as of 2026-08-19. Re-checked weekly.

Talent Signal

Hiring trend
▲ Hiring uptrend
48% of roles posted in last 30d
Open roles
27
via greenhouse
Product-build share
63%
engineering, research, product, design
Trajectory
expanding
product-led hiring — 63% of open roles build product; the rest are go-to-market and G&A.
No tracked executive churn; open roles trending up.
Open roles by month
Open roles by month27Aug '26
Open roles by function
Open roles by functionEngineering9Marketing4Other4Data & ML3Design2Product2Sales & GTM2Security1
■ product-building   ■ go-to-market / G&A
Data Analyst - SupplyEngineering ManagerHuman Data Quality Engineer (Founding Team) Human Data Quality Engineer (Founding Team) Human Data Quality Engineer (Founding Team) Lead Product Designer
Counted from Prolific's live job board as of 2026-08-17; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.

Founders & Key People

Phelim BradleyEkaterina DamerJim Moodie

Investors

Partech · Oxford Science Enterprises

Products

  • Prolific marketplace
  • Human data for AI training
  • Research participant recruitment

Competitors

Scale AI · Surge AI · Appen · Labelbox · Mercor
AIData LabelingHuman-in-the-loop
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of recent date. Refreshed quarterly.