To remove AI features in Chrome for Windows, disable specific experimental flags by typing chrome://flags in the address bar and setting the following to "Disabled":
AI mode omnibox entry point
AI entry point
omni allow AI mode matches, and NTP compose entry point.
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From Google's AI search results
AI mode omnibox entry point
AI entry point
omni allow AI mode matches, and NTP compose entry point.
Relaunch Chrome to apply changes.
Google and AI
Thanks for your reply. I made the appropriate changes on one Windows10 machine, then Chrome updated itself and the flags were reset.
Malcolm