Bob Graham, Chief Market Development Officer, Ness Digital Engineering. Remember in June 2022 when OpenAI released ChatGPT 3.5, and it reached one million users in five days? By January 2023, that had grown to 100 million users and made it the fastest-growing platform in history. In May 2023, Microsoft announced the integration of ChatGPT into Bing and accelerated the bringing of GenAI into the lexicon of everyday people.