A claimed AI-assisted breakthrough on the 200-year-old Navier-Stokes equations has sparked a credit dispute between Anthropic and OpenAI. A New York mathematician and an Anthropic collaborator neared the solution, but OpenAI used ~10,000 AI agents and millions of dollars to complete it. The rivalry runs deep: Anthropic was founded in 2021 by ex-OpenAI staff, including Dario Amodei, who believed OpenAI lacked responsible stewardship. Since then, they have competed for talent, dominance, and trillion-dollar valuations via Claude and ChatGPT.

Despite Sam Altman, Amodei, and Elon Musk recently urging slower AI development, both firms race to release more powerful models. Anthropic opposed Pentagon AI use for lethal weapons, prompting the Trump administration to cut ties; OpenAI and Google swiftly signed Pentagon deals. Anthropic also relaxed its responsible scaling policy, citing competitive pressure. At the India AI Impact Summit, Altman and Amodei refused to hold hands, raising fists instead. The core question remains: can these rivals truly cooperate for the common good while locked in a high-stakes race for superintelligence?