OpenAI CEO Sam Altman visits "Making Money With Charles Payne" at Fox Business Network Studios in New York on Dec. 4, 2024.Mike Coppola | Getty ImagesOpenAI on Friday announced it will begin testing ads within ChatGPT in the coming weeks, a highly anticipated decision that could kickstart a lucrative new revenue stream for the artificial intelligence startup. OpenAI said its Plus, Pro and Enterprise subscriptions will not include ads, but it plans to start testing them with adult free users in t...