GPT-5 launch hit by a "Waterloo"! OpenAI announced: GPT-4o back online!

On August 8th, after ChatGPT-5 went online, OpenAI's discontinuation of the GPT-4o version sparked controversy, with users complaining about the poor experience of using GPT-5. OpenAI subsequently announced the re-launch of GPT-4o for specific users and explained that the abnormal performance of GPT-5 was due to a malfunction in the automatic switcher. CEO Sam Altman admitted underestimating users' fondness for GPT-4o and stated that they would provide more customized services in the future. While GPT-5 set records in super difficult scientific problems, users provided feedback that it lacked emotional interactions. Third-party testing showed that GPT-5's leading advantages were minimal, with AI experts pointing out diminishing returns from large models and facing limitations in data and quality, as well as computational costs.