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Search beyond the ten blue links: generative engine optimisation, LLM visibility, AI assistants as a traffic source, and the crawlers behind them.
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's Nick Fox and Robby Stein described Gemini 4 Hydrogen as the biggest model upgrade to Search yet, citing speed, understanding, query fan-out and linking.
AI summary Google announced that Search is being upgraded with Gemini 4 Hydrogen, presented in a carousel of cards showing examples from the Search interface.
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 Google is bringing Gemini's Business Profile tools to Workspace accounts and relocating the Maps Message button, with its help page no longer listing regional restrictions.
AI summary Semrush explains what to measure for Gemini visibility, how to track brand mentions manually and how to scale the process with its tools.
AI summary A guide explains how to identify AI crawler requests in server logs and repair pages those crawlers are unable to read.
AI summary Semrush outlines a four-layer approach to brand visibility in AI search, starting with diagnosis, since content changes fail if AI cannot reach or correctly describe a site.