OpenAI swiftly reinstated GPT-4 after a user backlash against its replacement, GPT-5. Following widespread complaints about GPT-5's perceived lack of personality and 'lobotomized' tone on Reddit, CEO Sam Altman responded directly to user concerns. He announced GPT-4's return, exclusively for paying Plus subscribers ($20/month), citing the unexpected strength of user attachment to the previous model. Altman acknowledged underestimating the importance of GPT-4's characteristics and pledged to improve user customization options in future models.

Prepared by Jonathan Pierce and reviewed by editorial team.