OpenAI is an artificial-intelligence research and deployment company founded in December 2015 and headquartered in San Francisco. Its mission is to ensure that artificial general intelligence (AGI) benefits all of humanity. OpenAI is best known for ChatGPT, the GPT family of large language models, the DALL·E image models, the Sora video model, and its developer API. The organization operates as a capped-profit company (OpenAI Global, LLC) governed by the OpenAI nonprofit, and its largest strategic partner and investor is Microsoft.