Yann LeCun, Turing Award winner and former Chief AI Scientist at Meta, has publicly challenged claims by Silicon Valley investor Elad Gil regarding the region's leadership in AI development. Gil asserted that Silicon Valley is significantly ahead in AI advancements, suggesting a hierarchy where top labs are months ahead of ordinary engineers, and Silicon Valley leads New York and the rest of the world by several months to a year. LeCun refuted these claims on social media, labeling them as "BS" and highlighting global contributions to AI. He pointed out that key innovations like attention mechanisms originated in Montreal, PyTorch in New York, and AlphaGo in London. He also noted that Meta's Llama models were developed in Paris and New York, and other significant advancements like DINO and JEPA were created through international collaboration. LeCun sarcastically remarked that Silicon Valley is only ahead in areas it focuses on exclusively.