Cecily Mauran / Mashable:

GPT-5's system card says gpt-5-thinking has a hallucination rate of 4.5% with browsing enabled, compared to gpt-5-main's 9.6%, GPT-4o's 12.9%, and o3's 12.7%  —  The AI company boasts state-of-the-art performance across math, coding, writing, and health advice.

Cecily Mauran / Mashable:

GPT-5's system card says gpt-5-thinking has a hallucination rate of 4.5% with browsing enabled, compared to gpt-5-main's 9.6%, GPT-4o's 12.9%, and o3's 12.7%  —  The AI company boasts state-of-the-art performance across math, coding, writing, and health advice.

Source: TechMeme
Source Link: http://www.techmeme.com/250808/p14#a250808p14