GPT-4 to Be Replaced by GPT-4o in ChatGPT, Says OpenAI

OpenAI has announced that GPT-4, the AI model launched two years ago, will be retired from ChatGPT on April 30, 2025.

According to a changelog posted by the company, GPT-4 will be fully replaced by GPT-4o, OpenAI’s new multimodal model. The company noted that GPT-4 will still remain available in the API.

“In head‑to‑head evaluations it consistently surpasses GPT‑4 in writing, coding, STEM, and more,” OpenAI said. “Recent upgrades have further improved GPT‑4o’s instruction following, problem solving, and conversational flow, making it a natural successor to GPT‑4.”

GPT-4 was OpenAI’s first widely deployed model with multimodal capabilities, launched in March 2023 for use in ChatGPT and Microsoft’s AI assistant, Copilot.

Earlier, OpenAI CEO Sam Altman revealed that GPT-4 cost over $100 million to train. It was later succeeded by GPT-4 Turbo in November 2023, a faster and more cheaper version.

GPT-4 is also at the center of several copyright lawsuits against OpenAI, including one filed by The New York Times. Publishers allege that OpenAI used their content to train GPT-4 without their consent. However, OpenAI states that its use of publicly accessible data is protected under the fair use doctrine.