OpenAI will soon replace the GPT-4 artificial intelligence model in its popular ChatGPT service. Instead, a new, more powerful GPT-4o model will be used for the majority of requests, the company announced in a changelog on April 10.

"GPT‑4o is our newer, natively multimodal model. In head‑to‑head evaluations it consistently surpasses GPT‑4 in writing, coding, STEM, and more," the log says.

GPT-4 will be retired from ChatGPT on April 30, 2025, but will still be available through the API.

GPT-4 was introduced in March 2023 for ChatGPT and Microsoft's Copilot chatbot on the web. Several versions of GPT-4 had multimodal capabilities that allowed them to understand both images and text, a first for the company's widely used model.

TechCrunch writes that training GPT-4 cost more than $100 million. A number of publishers, including The New York Times, have sued OpenAI for copyright infringement. They claim that OpenAI trained GPT-4 on their data without their permission. The company says the fair use doctrine protects it from liability.