ChatGPT has added 4.5 million paying subscribers since the end of last year, according to The Information. With 20 million subscribers paying for the service, the company is earning “at least $415 million in revenue per month,” a rough estimate that doesn’t account for corporate plans or the new $200 a month Pro tier. The report adds that this could put OpenAI “well within reach” of its revenue projection of $12.7 billion this year.