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OpenAI has set a retirement date for GPT-4, the groundbreaking AI model that helped cement the company's dominance in artificial intelligence. The language model will disappear from ChatGPT on April 30, making way for its more capable successor, GPT-4o.
The move marks the end of an era for a model that transformed how millions interact with AI. GPT-4 burst onto the scene in March 2023, bringing major improvements in reasoning and capabilities that caught both tech enthusiasts and skeptics off guard.
But users won't miss it much. GPT-4o, which has served as ChatGPT's default model since May 2023, outperforms its predecessor across writing, coding, and STEM tasks. Recent updates have sharpened its ability to follow instructions, tackle complex problems, and maintain natural conversations.
The retirement announcement drops amid signs that OpenAI has bigger plans brewing. Reverse engineer Tibor Blaho uncovered evidence of several new models in development, including o3, o4-mini, and variations of GPT-4.1. The company also recently previewed GPT-4.5, positioning it as a more natural conversationalist and stepping stone toward GPT-5.
API users can breathe easy - they'll keep access to GPT-4 after the April cutoff. This flexibility helps developers maintain existing applications while planning their transition to newer models.
The sunset of GPT-4 highlights how quickly AI capabilities evolve. When it launched, the model represented a massive investment for OpenAI, reportedly costing over $100 million to train. CEO Sam Altman praised its capabilities, even as he warned about potential risks and limitations.
GPT-4's retirement comes as OpenAI faces growing legal challenges. The New York Times and other publishers have filed lawsuits alleging copyright infringement, claiming OpenAI trained the model on their content without permission. OpenAI maintains that fair use doctrine protects its training practices.
OpenAI's changelog struck a nostalgic note about GPT-4's impact: "GPT-4 marked a pivotal moment in ChatGPT's evolution. We're grateful for the breakthroughs it enabled and for the feedback that helped shape its successor."
The timing suggests OpenAI wants a clean break as it pushes forward with new innovations. GPT-4.5's research preview showed improved conversational abilities, while the mysterious o3 model promises enhanced reasoning capabilities. The leaked o4-mini could signal a push toward more efficient, specialized AI models.
Why this matters:
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OpenAI just launched o3 and o4-mini, models that combine visual intelligence with deeper reasoning. For the first time, these AIs don't just see images – they think with them, manipulating photos to extract insights just as a human would zoom in or rotate a picture to understand it better.
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