ChatGPT and Google Gemini are being compared in various tests, with some outlets declaring a clear winner and others discussing the pros and cons of each. The comparisons involve different versions of the AI models, including ChatGPT-4o, ChatGPT-5, and Gemini 2.5, with some tests focusing on performance in medical exams. The outcome of these comparisons appears to be mixed, with different sources reaching different conclusions about which model performs better.