OpenAI has revamped the display of its ChatGPT o3-mini model’s chain of thought (CoT) to enhance understanding, aiming to showcase its reasoning process more clearly. However, the update has sparked criticism, with users claiming similarities to DeepSeek’s R1 model’s presentation of reasoning. OpenAI stated that revealing the model’s thought process fosters informed decision-making and trust. Despite offering the new approach to both free and paid users, feedback on X platform was mixed. Some users preferred a full chain of thought display, rather than a summarized version. Critics accused OpenAI of imitating DeepSeek’s features, triggering a debate among users. Nevertheless, many users welcomed the improved presentation of reasoning in ChatGPT o3-mini as a positive step. Additionally, some users appreciated the endearing and humorous aspects of the updated Chain of Thought feature. Overall, the new approach signifies progress for ChatGPT o3-mini in providing a more insightful reasoning process.