Anthropic S-1 Reveals Rapid Growth Ahead of Blockbuster IPO NYT - Home Page By: Mike IsaacοΌ Erin GriffithοΌ Lauren Hirsch and Sri Muppidi 26 October 2026 at 15:02 The maker of Claude is on the verge of what could be the largest ever public listing, in a test of the A.I. industry amid questions about whether the boom can be sustained. Β© Jason Henry for The New York TimesAnthropic, a powerhouse in A.I., is only five years old and seemingly came out of nowhere.