Notes on web search for AI agents: the market, retrieval architecture, and what we learn running an index.https://www.unlob.com/en-gbhttps://www.unlob.com/blog/what-happened-to-web-search-apis-in-2026/https://www.unlob.com/blog/what-happened-to-web-search-apis-in-2026/Roughly $600 million raised, one $275 million exit, an API retired and a free tier withdrawn — the eighteen months that reshaped how agents reach the web.Wed, 05 Aug 2026 00:00:00 GMT