AI News Today, December 5, 2025: Gemini 3 Deep Think, Anthropic’s Agentic AI, and Fresh Security Warnings
Google launched Gemini 3 Deep Think, its most advanced AI reasoning mode, for Ultra subscribers on December 5. Anthropic signed a $200 million “agentic AI” deal with Snowflake. Security agencies released new guidance warning against using AI in critical infrastructure. NEXTDC and OpenAI agreed to build a hyperscale AI campus in Sydney.