GPT-4.1

GPT-4.1
DeveloperOpenAI
Year introducedApril 14, 2025 (2025-04-14)

GPT-4.1 is a large language model within OpenAI's GPT series. It was released on April 14, 2025. GPT-4.1 can be accessed through the OpenAI API or the OpenAI Developer Playground. Three different models were simultaneously released: GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano.