No-AI search compared: DuckDuckGo, Kagi SlopStop and Kitsuvo

No-AI search can mean three different things: search without the engine's own AI features, search that demotes content judged to be AI slop, or search where AI-built websites are filtered on your side. This guide compares one of each: DuckDuckGo's no-AI search, Kagi's SlopStop and Kitsuvo. We make Kitsuvo, so weigh our view with that in mind. Facts about the other two come from their own pages as read on October 10, 2026.

At a glance

	DuckDuckGo no-AI search	Kagi SlopStop	Kitsuvo
What it is	A version of DuckDuckGo search without AI features	A community reporting and review system inside Kagi Search	A desktop browser that filters results on Google, Bing and DuckDuckGo
What changes	Search Assist and Duck.ai are removed; AI-generated images are filtered by default	Reported AI slop is labelled; mostly-AI domains are downranked	Results tied to AI-builder domains are hidden, and matching links open behind a notice
AI-generated websites	Not described as filtered on its help page	Yes: web pages and domains reviewed by Kagi	AI-built websites, by builder fingerprint
Who decides	DuckDuckGo	Users report, Kagi reviews, typically within a week	Local rules on your computer, with a correction you can make
Cost	Free	Kagi is a paid search engine; plans from $5 a month, with a free 100-search trial	Free; optional Plus for cloud AI checks
Where it works	The DuckDuckGo search page, plus extensions for Chrome and Firefox	Kagi Search only	Inside Kitsuvo, on Mac and Windows

DuckDuckGo no-AI search

DuckDuckGo offers an AI-free version of its search at noai.duckduckgo.com. Per its help page, it removes Search Assist (AI-assisted answers) and Duck.ai, and it filters AI-generated images out of image results by default (the steps are in how to hide AI-generated images in search results). Otherwise searching works like the main site, and No-AI Search extensions for Chrome and Firefox set it as your default.

The limit: the help page describes the filtering as a best effort and does not say that AI-generated websites are filtered. It addresses AI features and AI images, not AI-built sites in web results.

Kagi SlopStop

Kagi is a paid search engine, and SlopStop is its feature for AI slop. Any user can report a web page, image or video from the results; each report is reviewed individually, typically within a week. On the web side, a page on a mixed domain can be flagged without being downranked, while a domain that is mostly AI-generated, typically above 80% of its pages, is flagged and downranked. Images and videos judged to be AI are labelled and downranked by default, and there are dropdown filters for AI images and AI videos and a setting to hide them completely.

The limit: it downranks rather than removes, it targets low-value mass-produced content rather than AI-built sites in general, and it only exists inside Kagi. Its help page does not mention a web-specific filter to hide flagged results completely. Kagi's pricing page lists plans from $5 a month and a free trial of 100 searches.

Kitsuvo

Kitsuvo sits one layer up. Rather than changing a search engine, it changes what you see in the browser. On Google, Bing and DuckDuckGo it hides results tied to recognized AI-builder domains, and it scores pages you open from builder fingerprints such as scripts, tags and headers. Links to likely AI-built pages wait behind a short notice, and every verdict comes with its evidence and a way to correct it.

The limit: it asks you to use a different browser. Detection depends on recognizable traces, so new or customized sites can be missed, and from a results list it can only judge the address until you open the page. Checking images for AI generation is optional and needs a local model that you install yourself, and those estimates are fallible.

If your aim is to filter AI-built sites out of search results, the Kitsuvo install guide walks through the free Windows and macOS browser and its first-launch steps. Local filtering needs no account.

Using them together

• You want fewer AI answers on the results page: DuckDuckGo's no-AI search or a Google Web filter. See how to turn off AI Overviews in Google.
• You pay for search and want a quality signal on content farms: Kagi, including SlopStop's reports.
• You want AI-built sites kept out of whichever engine you use: a client-side filter such as Kitsuvo. It is separate from your search engine, so it stacks with the other two.

The wider set of options, including operators and blocklists, is in how to hide AI-generated sites from search results. If you want to know what "no-AI" means for the browser itself, read what is a no-AI web browser. For eight tools in one list, see the roundup of best tools to filter AI-generated content from search.