Handshake

Career network turned human-data and RL environments provider via Handshake AI

Handshake operates the largest early-career network in the US and launched Handshake AI, a human data labs business that recruits PhD-level experts to build evals and RL environments for frontier AI labs. It leverages its network of millions of students and experts for domain-specific data.

Known for its 'Gandalf the Grader' benchmark work

Websitejoinhandshake.com/research/ai
DomainsMulti-Domain, Data Labeling, RLHF
LocationSan Francisco, New York, Bangalore, Berlin
Team size250+
Founded2014
FundingSeries F, $200M (2022, ~$3.5B valuation)
FoundersGarrett Lord

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