Microsoft-backed OpenAI will remove its GPT-4 model from ChatGPT on April 30, the company said in a changelog update posted on Thursday. The artificial intelligence (AI) firm will fully transition to GPT-4o, which is now the default model on ChatGPT.
“Effective April 30, GPT-4 will be fully replaced by GPT-4o,” the company said. GPT-4 will continue to be available for developers via OpenAI’s application programming interface (API).
OpenAI said GPT-4o outperforms GPT-4 across a range of tasks. “In head‑to‑head evaluations, (GPT-4o) consistently surpasses GPT‑4 in writing, coding, STEM, and more,” it said. “Recent upgrades have further improved GPT‑4o’s instruction following, problem solving, and conversational flow, making it a natural successor to GPT‑4.”
OpenAI had introduced GPT-4 in March 2023. It was the first widely deployed OpenAI model with multimodal capabilities — the ability to process both text and images — and it powered both ChatGPT and Microsoft’s AI assistant Copilot. OpenAI chief executive officer Sam Altman has previously said GPT-4 cost more than $100 million to train.
GPT-4 is also part of several copyright lawsuits against OpenAI, including one filed by The New York Times. The publishers allege that OpenAI used their content to train GPT-4 without permission. OpenAI has denied wrongdoing, saying its use of publicly available data is protected under the fair use doctrine.
Meanwhile, the company has introduced a memory feature in ChatGPT, which allows the chatbot to reference previous user conversations. The move is aimed at making responses more personalised and context-aware.
“We have greatly improved memory in ChatGPT—it can now reference all your past conversations!” Altman posted on X.
“Effective April 30, GPT-4 will be fully replaced by GPT-4o,” the company said. GPT-4 will continue to be available for developers via OpenAI’s application programming interface (API).
OpenAI said GPT-4o outperforms GPT-4 across a range of tasks. “In head‑to‑head evaluations, (GPT-4o) consistently surpasses GPT‑4 in writing, coding, STEM, and more,” it said. “Recent upgrades have further improved GPT‑4o’s instruction following, problem solving, and conversational flow, making it a natural successor to GPT‑4.”
OpenAI had introduced GPT-4 in March 2023. It was the first widely deployed OpenAI model with multimodal capabilities — the ability to process both text and images — and it powered both ChatGPT and Microsoft’s AI assistant Copilot. OpenAI chief executive officer Sam Altman has previously said GPT-4 cost more than $100 million to train.
GPT-4 is also part of several copyright lawsuits against OpenAI, including one filed by The New York Times. The publishers allege that OpenAI used their content to train GPT-4 without permission. OpenAI has denied wrongdoing, saying its use of publicly available data is protected under the fair use doctrine.
Meanwhile, the company has introduced a memory feature in ChatGPT, which allows the chatbot to reference previous user conversations. The move is aimed at making responses more personalised and context-aware.
“We have greatly improved memory in ChatGPT—it can now reference all your past conversations!” Altman posted on X.
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