1,503 Elo: Anthropic Dethrones OpenAI After 3-Year Reign
One thousand five hundred three. That is Anthropic’s Arena Elo as of March 2026, and it is the number Stanford HAI chose to open its annual AI Index with. When the institute released the 2026 AI Index Report on April 13, it did not bury the lede — the league table at the top of the global AI industry has a new name in first place. Read more »