OpenAI launched GPT-5 during a live-stream, claiming it improves reasoning, writing, and accuracy. However, users expressed frustration over losing access to previous models, reporting shorter responses and less personality,

The launch of GPT-5 has seen OpenAI officially retire its previous-generation models (GPT-4o, o3, o4-mini and o4-mini-high) for many users, instead moving to make GPT-5 the standard option across all tiers including free accounts.

OpenAI noted that it was not totally eliminating older models like GPT-4o, which is about a year old at this point. However, these models are now limited to the developer API. For people who hopped on ChatGPT to have a conversation with their favorite AI, things are different now that GPT-5 is the default.