Panicked about losing GPT-4o, some ChatGPT users are building DIY versions. A psychologist explains why ‘feel-good hormones’ make it hard to let go

Passionate AI fans saved an overly agreeable ChatGPT model from the trash bin once, but now OpenAI is determined to shut it down, and users are revolting in part because of the new model’s comparatively cold personality

The AI company said last month that on Feb. 13 it would retire GPT-4o, a version of which was previously criticized for being so agreeable as to be borderline sycophantic. According to the company, 0.1% of ChatGPT users still use GPT-4o everyday, which could equate to...