Does GPT-4 Pass the Turing Test?
Cameron Jones Benjamin Bergen
We evaluated GPT-4 in a public online Turing Test. The best-performing GPT-4
prompt passed in 41% of games, outperforming baselines set by ELIZA (27%) and
GPT-3.5 (14%), but falling short of chance and the baseline set by human
participants (63%). Participants' decisions were based mainly on linguistic
style (35%) and socio-emotional traits (27%), supporting the idea that
intelligence is not sufficient to pass the Turing Test. Participants'
demographics, including education and familiarity with LLMs, did not predict
detection rate, suggesting that even those who understand systems deeply and
interact with them frequently may be susceptible to deception. Despite known
limitations as a test of intelligence, we argue that the Turing Test continues
to be relevant as an assessment of naturalistic communication and deception. AI
models with the ability to masquerade as humans could have widespread societal
consequences, and we analyse the effectiveness of different strategies and
criteria for judging humanlikeness.