Darren Cullen An artist in London plastered fake OpenAI ads inside city subway cars calling attention to ChatGPT’s close ties to a series of youth suicides. The artist Darren Cullen, a Banksy-like figure who has conducted many similar “subvertising” campaigns before, posted photos of the faux advertisements on X-formerly-Twitter. The fake ads reflect OpenAI’s minimal black-and-white style, and are affixed with OpenAI’s logo next to text reading “ChatGPT.”