AI Watch: Anthropic IPO filing, Nvidia buyback, OpenAI delay, AMD deal, AI policy in focus

Anthropic's IPO filing reveals soaring revenue alongside massive AI infrastructure commitments, while Nvidia expands its share buyback and OpenAI delays GPT-6.1 Astra over safety concerns. AMD's acquisition of World Labs and fresh US AI policy developments add to a busy week for the sector. What do these updates mean for the AI industry?