OpenAI’s latest upgrade was supposed to be a leap forward. Instead, it sparked backlash—and raises big questions about whether stitching together multiple models is the path to AI’s future.

In an interview, the head of ChatGPT says ‘we have to give people some level of predictability when there’s a major change.’ After the backlash to replacing its 4o model with GPT-5, OpenAI will no longer get rid of old models without a heads up.