OpenAI improves ChatGPT health intelligence

OpenAI has enhanced ChatGPT's health intelligence with its GPT-5.5 Instant model, aiming to provide more accurate and understandable health information to users. This upgrade brings significant improvements in recognizing urgent care needs, requesting relevant context, explaining uncertainty, and simplifying complex medical information. The new model's performance on challenging health evaluations now rivals OpenAI's frontier models and is accessible to all free ChatGPT users. These advancements are attributed to both model capabilities and rigorous physician-led evaluations, which help define and measure progress in health-related responses. User feedback and privacy-preserving monitors show a substantial reduction in factuality issues within health responses.