OpenAI started rolling out GPT-5 to ChatGPT shortly after the AI system’s introduction last week. As part of the update, the company removed several of the chatbot service’s earlier LLMs. The move reportedly drew criticism from thousands of users, some of whom complained that GPT-5 provides lower output quality than its predecessor.

ChatGPT-5 is getting improved personality after OpenAI received a slate of criticism from users saying that GPT-5 responses feel cold, compared to GPT-4o.

OpenAI has walked back a controversial decision from last week that removed user access to older ChatGPT models when GPT-5 became the new default. Following a surge of complaints across forums and social media, legacy models like GPT-4o, GPT-4.1, o3, and o4-mini are once again available—but only for paid users who know where to look.