Two AI models pass benchmark Turing Test, blurring line between human, machine

The experiment employed a three-party design where participants engaged in simultaneous five-minute conversations with both a human and an AI system

OpenAI’s GPT-4.5 and Meta’s Llama-3.1 models have passed the Turing Test, a benchmark proposed by Alan Turing in the 1950s to assess whether machines can exhibit intelligent behaviour indistinguishable from humans that has always been held up as a sort of tipping point on the maturity and sophistication of Artificial Intelligence (AI).

An artificial Intelligence booth by Rittal Ltd. at the Hannover Messe 2025 trade fair in Hannover, Germany, on March 31, 2025. (Bloomberg)

Researchers Cameron R. Jones and Benjamin K. Bergen from the University of California San Diego, found that GPT-4.5 performed so convincingly that judges identified it as human 73%