An AI Model Has Officially Passed the Turing Test

One of the industry's leading large language models has passed a Turing test, a longstanding barometer for human-like intelligence. In a new preprint study awaiting peer review, researchers report that in a three-party version of a Turing test, in which participants chat with a human and an AI at the same time and then evaluate which is which, OpenAI's GPT-4.5 model was deemed to be the human 73 percent of the time when it was instructed to adopt a persona. That's significantly higher than a random chance of 50 percent, suggesting that the Turing test has resoundingly been beaten. The research also evaluated Meta's LLama 3.1-405B model, OpenAI's GPT-4o model, and an early chatbot known as ELIZA developed some eighty years ago. "People were no better than chance at distinguishing humans from GPT-4.5 and LLaMa (with the persona prompt)," wrote lead author Cameron Jones, a researcher at UC San Diego's Language and Cognition Lab, in an X thread about the work. "And 4.5 was even judged t ... Read full article.