AI Search: ChatGPT, Perplexity, Gemini and AI Overviews

AI search tools such as ChatGPT, Perplexity, Google Gemini and Google’s AI Overviews now answer many questions that used to send visitors to websites. Large language models (LLMs) summarize, recommend and cite sources, and the sources they choose are not always the ones that rank first in traditional search results.

This hub collects my coverage of AI search and generative AI as it affects marketers, publishers and businesses: how AI assistants describe brands, which sources they cite, how AI visibility tools measure that, and what the shift means for SEO (search engine optimization). Much of the advice in these posts comes back to fundamentals that still apply: clear entity information about who you are, consistent facts across the web and original content that is worth citing.