OpenAI to Roll Out GPT-4o as GPT-4 Replacement from April 30

OpenAI will remove its GPT-4 model from ChatGPT from April 30, according to a changelog update released on Thursday. The artificial intelligence (AI) firm will completely switch 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 stated. GPT-4 will continue to be available to developers through OpenAI's application programming interface (API).

OpenAI claims that GPT-4o outperforms GPT-4 across a variety of tasks. "In head‑to‑head evaluations, (GPT-4o) consistently surpasses GPT‑4 in writing, coding, STEM, and more," said the announcement. "Recent upgrades have further improved GPT‑4o's instruction following, problem solving, and conversational flow, making it a natural successor to GPT‑4."

OpenAI introduced GPT-4 in March 2023. It was the first widely used OpenAI model with multimodal capabilities (the ability to process both text and images), and it powered ChatGPT and Microsoft's AI assistant Copilot. OpenAI CEO Sam Altman previously stated that GPT-4 cost more than $100 million to train.

GPT-4 is also involved in several copyright lawsuits against OpenAI, including one brought by The New York Times. The publishers claim that OpenAI used their content to train GPT-4 without permission. OpenAI has denied wrongdoing, claiming that its use of publicly available data is protected under the fair use doctrine.

Meanwhile, the company has added a memory feature to ChatGPT, allowing the chatbot to reference previous user conversations. The move is intended to make responses more personalised and context-sensitive.

"We have greatly improved memory in ChatGPT—it can now reference all your past conversations!" Altman posted on X.