Our data studies on AI answers, plus maps of the deals and trends shaping AI search.
ChatGPT referral sessions fell by around 46% from October 9, 2026 across the sites we monitor, while total traffic, Perplexity and Claude held steady. What we know and what to check.
Esteve Castells
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We analyzed 137,038 ChatGPT answers and 34,514 ads. 71.9% of US answers carried an ad, 3,033 brands are buying, and only 2.8% of ads pointed at a domain the same answer cited.
Esteve Castells
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The consolidated reference for every major AI content licensing deal from 2023 to 2026, grouped by buyer with reported values, a timeline, and who licensed versus who sued.
Esteve Castells
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Beyond OpenAI, Google and Perplexity, the other AI giants take very different approaches to content licensing. A verified, sourced map of who signed what, and who is only in talks.
Daniel Peris
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Google has signed far fewer AI licensing deals than OpenAI because it already crawls the open web. Here is every confirmed content deal feeding Gemini, Google AI Mode, and AI Overviews, and the publisher traffic fight behind it.
Esteve Castells
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A reference pack of 2026 generative engine optimization statistics: AI search adoption, citation patterns, AI Overview coverage, and brand visibility benchmarks marketers actually use.
Daniel Peris
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A verified map of Perplexity's Publishers' Program: who joined, exactly how the citation-based revenue share works, its evolution into Comet Plus, and the publishers who sued Perplexity instead of signing.
Esteve Castells
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![Blue title graphic reads “[2023–2026] Every AI Content Licensing Deal,” introducing a roundup of AI content licensing deals.](/uploads/523/medium_large/all-ai-publisher-partnerships.png)
![Title card reading “OpenAI Publisher Deals [2023–2026]” with the OpenAI logo on a blue background.](/uploads/452/medium_large/openai-publisher-deals.png)