Sam Altman says OpenAI added more than $1B in annual recurring revenue in the past month “just from our API business” - OpenAI has made more than $1 billion a month from something other than ChatGPT. — That revenue comes “just from our API business,” Sam Altman said. Business Insider 2026-01-23 Lee Chong Ming API, API, Sam Altman, Sam Altman Related Coverage OpenAI's API business grew by $1 billion ARR last month The Decoder · Maximilian Schreiner Meet the Founder Whose OpenAI-Powered Startup Just Hit $100 Million in ARR Inc.com · Ben Sherry Discussion @sama Sam Altman on x We have added more than $1B of ARR in the last month just from our API business. People think of us mostly as ChatGPT, but the API team is doing amazing work!