OpenAI stated on its website that starting from April 30th, GPT-4 will be "completely replaced" by GPT-4o, but GPT-4 will continue to be available through API. OpenAI stated, "In face-to-face evaluations, it (4o) continues to outperform GPT-4 in writing, coding, STEM, and other areas." According to the US media The Verge on the 10th, OpenAI will unveil a series of new AI models next week, including GPT-4.1, which will be an improved version of the 4o multimodal model. OpenAI will also introduce smaller versions of GPT-4.1 mini and nano, as well as the o3 "reasoning" model and a new reasoning model called o4-mini.