Gemini, Google's (NASDAQ:GOOG) generative AI platform, has seen its user base take off over the last six months. According to details shared during the antitrust trial in Washington, D.C., and reported by TechCrunch, Gemini's monthly active users reached 350 million by Marchup from just 9 million daily users last October.

That's a huge jump. Daily active users climbed to 35 million, which helped push the monthly numbers way up.

For context, OpenAI's ChatGPT had 600 million monthly users in March, while Meta Platforms' (NASDAQ:META) Meta AI reported close to 500 million toward the end of last year.

The trial also revealed that OpenAI CEO Sam Altman believes nearly 800 million people are now using their tech. He even mentioned OpenAI would be interested in buying Google's Chrome browser if the court orders Google to let it go.

The U.S. Justice Department wants Google to break up parts of its business to give smaller players a chance. That includes making Chrome separate and forcing Google to share more of its search data. Google says that would hurt AI development and slow innovation at a time when it's competing with China on tech breakthroughs.