Sorry for 1 star rating, but it doesn't work anymore of all sudden. Windows 10 22H2, Firefox 149.0.
What currently works is for example:
Hide Gemini and Google AI von Paul Fisher.

非常に良いツールです。この拡張機能をインストールしてからウソばかり言うgoogleのAIを目にしなくなり、本当に快適でした。ありがとうございます。
しかし残念なことに、ここ数日まったく機能していません。google側で何か仕様を変えてしまったんでしょう。拡張機能のバージョンアップを待っています。

3/20/2026: Hasn't worked at all for the past several weeks. The miserable bastards have figured out how to stymie it.

Used to work as designed, as of February 22nd 2026 it no longer functions

on firefox/PC it works like a charm... no empty gaps or anything, just gone... i wish i looked for this earlier <3

Works for the most part but now google has a giant popup when you search asking if you want to learn more about Ai features which has to be closed manually every search

Unfortunately, as by 12.01.2026, doesn't work anymore. Google probably changed something to bypass this plugin

It works (yay!) but leaves a blank gap where the AI overview would be. If that gap is fixed this would be a five star add-on.

Works on PC browser but not on mobile version of firefox.

The AI overview manages to slip through 90% of the time

It removes the big AI Overview, but does not remove the AI summary in the website descriptions.

Unreliable. sometimes works, sometimes just puts AI overview lower in results and sometimes doesn't work at all. Not worth it.

it does not work at all. i still see ai overviews. i thought i didn't even have an anti ai overview extension before i discovered i did, but one that completely didn't even work.

just use ublock.