Good morning, and welcome back to Techzip AI Newsletter.

Google’s Gemini 4 Hydrogen, a fast new model, is now the default in AI Mode, and Anthropic’s Claude Meetings puts Claude on Google Meet calls, drafting docs and writing notes live.

Also in today’s issue: OpenAI’s finding that stronger models are harder to monitor through chain-of-thought, Anthropic’s self-hosted Managed Agents, chatbots sending shoppers to fake retail sites in Podqi’s test, and Forter data on AI-agent orders. The AI Play covers prompting Claude Opus 5.5, and our reads take on agent harnesses and Fable 5.2.