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News about Google's AI Overviews and AI Mode: rollouts, traffic effects, reporting in Search Console, and how publishers are responding.
AI summary Gemini 4 Hydrogen became the default model in AI Mode worldwide and is used for the hardest AI Overview questions.
AI summary Google is testing moving the source icons in AI Overviews from the top to the bottom, which may make the citations harder to find.
AI summary Google now expands AI Overviews for definitions by default, so users no longer need to click Show more to see the full version.
AI summary Sistrix says over 80% of keywords in its one-million-keyword UK Visibility Index now show an AI Overview, with e-commerce domains increasingly exposed.
AI summary Google is extending English-language ads in AI Mode to more than 10 new countries and introducing multiturn ads for follow-up queries in the US.
AI summary Google has released Gemini 4 Carbon, described as its strongest model for cybersecurity, agentic workflows, software engineering and scientific reasoning, now available in Search via AI Mode.
AI summary A site that opted out of Google's AI features estimated that AI Overviews and AI Mode sent it about 21% of its clicks, with a possible lift on regular listings.
AI summary Holiday data counting ads in Google AI Overviews, AI Mode and ChatGPT across five shopping categories shows most ChatGPT ads in beauty and travel ran on research prompts.
AI summary Google is extending UCP-powered direct checkout in AI Mode and the Gemini app to Canadian shoppers, with a Merchant Center integration planned for next year.
AI summary Google's AI Mode now links home service searches to booking and quote pages, with Search Engine Journal covering how businesses reach those pages and partner views on lead fees.
AI summary Ahrefs explains Google AI Mode, noting that Sundar Pichai called it the biggest upgrade to Search ever and said it had passed 1 billion monthly active users.