OpenAI just quietly retired the last of the GPT-4 models — and it feels like the end of an AI era
OpenAI has officially retired the last of its GPT-4 models, marking the end of an era for this influential AI technology. The retirement includes GPT-4.5 and o3, which will no longer be available after specified sunset periods. Many users are expressing nostalgia for these models, which played a significant role in the generative AI boom.
- ▪OpenAI is retiring GPT-4.5 and o3 from ChatGPT, signaling the end of the GPT-4 era.
- ▪The retirement of these models follows a trend of phasing out older versions to focus on newer, more capable models.
- ▪Users have expressed disappointment and nostalgia for GPT-4 and its offshoots, which were seen as groundbreaking in AI development.
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AI Platforms & Assistants OpenAI ChatGPT OpenAI just quietly retired the last of the GPT-4 models — and it feels like the end of an AI era News By Graham Barlow published 29 May 2026 The GPT-4 era is coming to an end inside ChatGPT When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. (Image credit: Getty Images / VCG) Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter OpenAI is retiring GPT-4.5, the final GPT-4 model still available in ChatGPTThe move closes the chapter on the AI model that helped spark the generative AI boomSome people are already nostalgic for GPT-4 and GPT-4o, despite…
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