Anthropic Tops OpenAI to Become the World’s Most Valuable A.I. Start-Up

Anthropic raised $65 billion in new fund-raising that put its value at $900 billion, ahead of OpenAI’s last valuation of $730 billion, as the companies duel for A.I. dominance.Anthropic’s updated model, Claude Opus 4.8, is particularly adept at vibecoding, or the process of artificial intelligence writing code from prompts in conversational English.