Tech insiders can't stop talking about "Le Chaton Fat," a supposedly world-beating AI model from Mistral. There's just one problem: It seems to be fake. The meme exploded over the past few days after a series of social media posts claimed that French AI startup Mistral had secretly developed a frontier model called "Le Gros Chaton" — French for "the fat kitten" — that outperformed rivals from OpenAI and Anthropic. The joke has spread so widely that some people outside the AI bubble have started