OpenAI makes ChatGPT and the GPT models behind it. ChatGPT's launch in November 2022 made AI chatbots mainstream. It also builds huge data centers through the Stargate project.
Makes ChatGPT and the GPT-5.x models. GPT-5.6 came out in July 2026.
Raised $122B at an $852B valuation in March 2026. Amazon, NVIDIA and SoftBank were the biggest investors.
Lining up tens of gigawatts of computing power through Stargate and chip deals with NVIDIA, AMD and others.