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.
Posted from: this blog via Microsoft Power Automate.