uBlock Origin AI Blocklists vs a Dedicated Extension (2026): Which Should You Use?

If your YouTube feed is clogged with synthetic narrators, faceless "brainrot" compilations, and uncanny AI clips, you have two realistic DIY routes to clean it up: bolt a community AI blocklist onto uBlock Origin, or install a dedicated "hide AI" extension. Both are legitimate. They just suit different kinds of people. This is an honest, side-by-side look at the uBlock AI blocklist approach versus a purpose-built tool — the classic block AI on YouTube with uBlock vs extension decision — so you can pick the one you'll actually keep using.

First, some context for why people are bothering at all.

The problem is real (and the platforms admit it)

• A late-2025 study found that roughly 21% of YouTube recommendations served to new users are AI-generated slop, with about ~33% more classified as "brainrot." (source)
• A separate Kapwing analysis of Social Blade data put more than 1 in 5 (>20%) recommended YouTube videos in the low-quality AI-slop bucket. (source)
• YouTube CEO Neal Mohan publicly named managing AI slop a priority for 2026. (source)
• It's not niche annoyance, either: 56% of people say they see AI slop on social often or very often, and 83% at least sometimes. (source)

So filtering it yourself is a reasonable response. The question is how. (If you want the broader menu of options including YouTube's own built-in controls, see how to block AI videos on YouTube.)

Route 1: uBlock Origin + a community AI blocklist

uBlock Origin is one of the best content blockers ever made — fast, open-source, and genuinely powerful. Out of the box it doesn't target AI slop, but the power-user move is to subscribe it to a community-maintained AI filter list (people share lists with names like "HUGE AI Blocklist" or "SlopBlocker"), or to pair it with a custom Tampermonkey/Greasemonkey script.

How it works: the filter list contains cosmetic rules that hide elements matching certain selectors, channels, or keyword patterns. When a video card matches, uBlock removes it from the page before you ever see it.

Where it wins:

• Free, forever. No tiers, no unlock. $0.
• Surgical control. If you know your way around uBlock's syntax, you can write rules that do exactly what you want — block a channel, a keyword, a layout element — across any site you like, not just YouTube.
• It composes with everything else you already block. Ads, trackers, annoyances, and AI slop, all in one engine you already trust.
• No second extension. If you run uBlock anyway, you're adding a list, not new software.

Where it costs you:

• Setup is on you. You have to find a reputable list, add it as a custom filter URL, and trust whoever maintains it. That's a real research step, not a one-click install.
• Maintenance is ongoing. Filter lists target the markup of a page. When YouTube or Facebook changes their HTML — which happens regularly — rules silently break, and you may not notice your filter has stopped working until the slop creeps back. Someone has to update the list; if that someone goes quiet, the list rots.
• It can over- or under-block. Aggressive cosmetic rules occasionally nuke things you wanted, and a stale list under-blocks. Debugging that means opening uBlock's logger and reading selectors.
• No friendly dashboard. There's no "whitelist this creator" button, no blocked-today counter, no blur-vs-remove toggle. The UI is uBlock's UI, which is excellent for what it is but not built for casual AI-slop tuning.

Honest recommendation: if you're a tinkerer who already runs uBlock and enjoys maintaining your own rules, this is genuinely the route for you. It's the most flexible $0 option in existence, and you should use it. The barrier isn't capability — it's the appetite for setup and upkeep.

Route 2: a dedicated install-and-go extension

A purpose-built "hide AI" extension trades some of uBlock's raw flexibility for a guided experience: install it, flip it on, and it ships with detection logic plus a UI made specifically for this one job. Unslop is not first to market here — several free options already exist:

• Clarity — Hide AI Videos — Free, ~1,000 users, rated 4.6 (10 ratings). Local detection with an optional community blocklist, a one-click toggle, and a daily counter. YouTube only (home/Shorts/recs). (listing)
• ByeAI — Free, ~956 users, rated 3.7 (3 ratings). Uses community flagging / crowd-voted hiding, no account. YouTube only. (listing)
• AI Slop Blocker — Free, ~429 users, rated 4.6 (5 ratings). Local; blocks only self-disclosed/AI-disclosed videos and hides Google AI Overviews. YouTube + Google Search. (listing)
• AI Content Shield — Freemium; Pro ~$6/mo (~$4.95/mo billed yearly, ~$59/yr). The widest net — ~20 sites — with AI-voice blocking as a Pro feature. (site)

Where extensions win over the uBlock route:

• No setup tax. Install, toggle, done. No list hunting, no filter syntax.
• A real UI. Whitelist creators, choose remove-or-blur, see a counter, add keywords through a settings panel instead of writing rules.
• They generally self-update. Detection logic ships with the extension and updates through the store, so you're less exposed to a single volunteer list maintainer going dark.

Where extensions lose:

• Less flexible. You get the developer's detection model and the sites they chose to support — not arbitrary rules on arbitrary pages.
• Most are YouTube-only. Clarity, ByeAI, and AI Slop Blocker don't touch Facebook.
• Some rely on crowd-voting or a shared server (ByeAI; Clarity's optional list), which means what's hidden depends partly on other people — and isn't fully local.

Where Unslop fits

Unslop is the dedicated route for people who want **local privacy and Facebook coverage without touching filter syntax. It's built around one idea: do everything on your device**.

• 100% local. Runs client-side with only the storage permission — no account, no community server, no telemetry. Pro keys are verified offline. Nothing about what you watch leaves your browser. (That matters to a lot of people: ~62% say they're less likely to engage with or trust content they know is AI-generated, and 53% distrust AI-powered search results — privacy and control are the whole point. sproutsocial, Gartner)
• YouTube + Facebook in one extension. Filters YouTube home, search, sidebar, and Shorts shelves, plus the Facebook main feed — which Facebook badly needs (Rolling Stone).
• No crowd-voting. It matches each card's visible text, your custom keywords and hashtags, and the platform's "Altered or synthetic content" disclosure label — declared signals, not other people's votes.
• Accurate by design. Whole-word matching (16 passing matcher tests) means "ai" never trips on Dubai, email, or rain.
• You stay in control. Remove or blur, creator whitelist, 20 custom keywords on the free tier, and a live blocked counter (total/today).
• Pricing: free core, optional one-time $5 Pro (pay-what-you-want, $3 floor). No subscription.

Unslop's honest limits

• Not first to market — see the free options above.
• Reads declared signals, not pixels or audio. Undisclosed AI with no telltale keywords can slip through. (The uBlock route has the same blind spot — cosmetic rules also match markup, not content.)
• No AI-voice acoustic detection (AI Content Shield Pro advertises that).
• Chromium only — Chrome, Edge, Brave, Opera, Arc. No Firefox or mobile yet.
• One thing no tool here changes: filtering slop out of your feed doesn't reduce the energy AI generation consumes. Data-centre electricity is projected to roughly double from ~485 TWh in 2025 toward ~950 TWh by 2030, with AI the biggest driver (IEA). Hiding a video is a feed fix, not an environmental one.

Side-by-side

So, which should you use?

• You already run uBlock and like tinkering? Use the uBlock + community AI blocklist route. It's free, powerful, and the most flexible thing going — just be ready for the setup and the occasional "the list broke again" afternoon.
• You want a free YouTube-only toggle with zero fuss? Try Clarity, ByeAI, or AI Slop Blocker.
• You want the widest cross-platform net and don't mind a subscription? AI Content Shield.
• **You're non-technical, want it local, and need YouTube and Facebook covered without writing a single filter rule? That's the gap Unslop** is built for.

There's no universally "best" answer — only the one that matches how much fiddling you enjoy. uBlock rewards the curious; a dedicated extension rewards the people who just want their feed back. Both beat scrolling through slop.

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Want the full menu, including YouTube's own built-in controls and a tool-by-tool breakdown? Read how to block AI videos on YouTube, or browse our AI content blockers compared (2026). Stat sources are linked inline; figures are a synthesis of published reporting, not original data collected by Unslop.