Firefox Will Have an Option to Disable All AI Features
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The debate rages on about Firefox's plan to introduce an "AI kill switch" - with some commenters wondering why not make AI features disabled by default, allowing users to opt-in instead. The discussion takes a turn when it becomes clear that Firefox's new CEO views AI as a potential monetization source, sparking speculation about how exactly they'll cash in. While some users suggest making AI features available as extensions, others point out that Mozilla shouldn't be worrying about adoption numbers in the first place. It turns out, the answer was hiding in plain sight - the "AI kill switch" is actually just a toggle to disable all AI features at once, with individual features still being opt-in.
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I want the AI agent to act more like a fiduciary, an independent 3rd party acting in my best interest. I don't need an AI salesman interjecting itself into my life with compromised incentives.
OpenAI was already taking steps to integrate ads, amd Grok shows how much we should be trusting AI as some impartial 3rd party. The goal was always about control and profiting off of said control. Pretty much the antithesis of hacker mindsets.
That way, the users who want them can download them, and the users who don't, don't.
because no one in right mind, would opt-in such a large change seriously. and definitely never on corporate machine
"All AI features will also be opt-in"
I suppose if - after you click away the popup that says "Thank you for loving Firefox"(1) - a popup shows that says "Hey, hey, look at me, look we have this new feature, it'll blow you away. Do you want to enable it?" would be obnoxious but satisfies the idea of "opt-in".
(1) https://bugzilla.mozilla.org/show_bug.cgi?id=1791524 - I still remember how icked I was seeing this popup.
Why exactly should I, a user, care about this? I don't want useless crap shoved in my face, period. I don't care that people might not turn on someone's pet feature if they don't enable it by default.
If it's off be default it will stay off unless the user is somehow made to try it. Default opt-in is one option to do that, the simplest one, but it's not the only one. The rest require explaining clearly what the user will get out of enabling it ... and that often is difficult to do succinctly, or convincingly. So shovelling it down everyone's throat it is.
https://vivaldi.com/blog/technology/why-isnt-vivaldi-browser...
We need more control over the feature. Even just the ability to select text, right click, and have a "Translation" menu would be huge. Looks like there is such a feature, but it doesn't let you pick the language pairs, which is the most basic requirement of translation.
https://support.mozilla.org/en-US/kb/website-translation has the text: "A new Translate selection feature has been added starting in Firefox version 128, that enables you to highlight and translate selected text."
Are they still only partially deployed?
The UX is not polished, and not responsive. No indicator that translation is happening, then the interface disappears for the translation to materialize, with multisecond delays. All understandable if the model is churning my mobile CPU, but it needs a clear visual insicator that something happening
Those are all features using AI and features I consider to be useful
Honestly, is anybody reading what's getting written anymore? If it gets taken seriously it would ship with an enable-AI button, not the other way round.
[citation needed]
And then others wonder why customers are frustrated.
What numbers? Have Mozilla published any numbers showing their AI experiments have been warmly received by users?
New CEO says they've run the numbers and decided to not kill adblockers, leading to people asking why exactly they were running those numbers (if it was an actual ideological commitment, the numbers wouldn't matter).
> Mozilla says they'll add a killswitch for all AI features (so that the tiny but vocal anti-AI minority will be happy), and people blame them for not having it as an enable-switch.
Yes, opt-in vs opt-out is kinda an important distinction. And you're assuming that opposition is a "tiny but vocal", which - especially among people bothering to use firefox - seems unfounded. Which brings use neatly to,
> Whatever they do, they simply cannot win. I'm personally starting to suspect the main issue with Mozilla is its users.
Well, yes. If you build a userbase out of power users and folks who care about privacy and control... then you have a userbase of power users and folks who care about privacy and control. If Mozilla said up front that they were only interested in money and don't care about users, then fair enough, but don't go trumpeting how you fight for the user and then act surprised when the user holds you to that.
Communicating about what you're knowingly rejecting is a point of pride, not a confession. But since there's no such thing as an OBS, or Nextcloud, or VLC Derangement syndrome, nobody grabs the pitchforks in those cases.
https://commons.wikimedia.org/wiki/File:Graham%27s_Hierarchy...
> But since there's no such thing as an OBS, or Nextcloud, or VLC Derangement syndrome, nobody grabs the pitchforks in those cases.
qualifies as name-calling.
The second one doesn't sound like real conviction.
Real argument: "they said they're doing "privacy preserving" ads, look at this post where they announce it". Real argument "they say they're putting AI in the browser, I don't like that. Here's the statement!" Real argument: " they purchased Anonym and are dabbling in adtech, here's the news article announcing the acquisition!"
Not real argument: "They said they didn't want to take money to kill ad blockers but if you squint maybe it kinda implies they considered it, at least if you don't consider other reasons they might be aware of that figure." Well, not entirely not-real, but it's like 0.001% circumstantial evidence that (1) has to be reconciled with their history of opposing the Manifest changes and (2) would have to be complementary to something more substantive.
The thing that's unfortunate here is I would like to think this goes without saying, but ordinary standards of charitable interpretation are so far in the rear view mirror that I don't know that people comfortable making these accusations would recognize charitable interpretation as a shared value. Not in the sense of bending over backwards to apologize, but in the ordinary Daniel Dennett sense of a built-in best practice to minimize one's own biases.
Their history is less relevant now because it's a fresh CEO that came up with this statement on his first day. New leaders often means a change in direction and this is a worrying sign. Also the number he quoted is far too explicit. Doing something like that would instantly move Firefox to be the absolute worst browser possible considering even advertising- and tracking-loaded crap like Chrome and Edge don't go that far.
Clearly they have been running the numbers and clearly he feels fine talking about it which is a pretty strong departure of previous values.
Of course I'd not continue using Firefox in this case, and I'm sure it would get widely forked. I found it pretty shocking.
In all of those examples, the devs note that people have reached out to them, unprompted, to try and get them to sell out. That's materially different from a company proactively looking into the payoffs of selling out. The only question is whether the latter is what's happening; I'm having trouble tracking down the actual thing that was said (I think in an interview?).
>He says he could begin to block ad blockers in Firefox and estimates that’d bring in another $150 million, but he doesn’t want to do that. It feels off-mission.
Not even a direct quote from the CEO.https://www.theverge.com/tech/845216/mozilla-ceo-anthony-enz...
Is that their core user base, or just the vocal user base online? Only 5-10% of their user base have UBO installed (FF has almost 200 million users, extension store reports ~10 million UBO installs).
Firefox isn't LibreWolf, it's user base are just average people, not much different than that of Chrome, Safari, or Edge.
> Firefox: Get the gold standard for browsing with speed, privacy and control.
I hadn't actually seen that when I wrote "power users and folks who care about privacy and control", but that's even mostly the same words, let alone intent.
But they've never done this. There is a very vocal group of Firefox power users but the browser has always targeted a general audience, marginalization by Chrome over the years not withstanding.
If you have any ambition to regain some of that market share listening to the average vocal Hackernews or Reddit commenter, who is not the median user, even just among the current ~150 million users is not a good idea.
The AI feature should be opt-in not opt-out.
That's a good point. Let's talk about that. It seems like it's a simple thing to do to show good faith that this won't be a normal corporate AI push.
This is not true, and is easily verifiable for yourself.
https://data.firefox.com/dashboard/hardware
The vast majority of Firefox usage is on Windows.
Arch pkgstats (opt-in): ~64% FF, ~41% Chromium, ~17% Chrome
https://pkgstats.archlinux.de/fun/Browsers/current
Debian popcon (opt-in): 2.2% Firefox, ~10.3% Chromium
https://qa.debian.org/popcon.php?package=firefox
https://qa.debian.org/popcon.php?package=chromium
Flathub installs: 10kk Firefox, 10kk Chrome, 1.8kk Chromium
https://flathub.org/en/apps/org.mozilla.firefox
https://flathub.org/en/apps/com.google.Chrome
https://flathub.org/en/apps/org.chromium.Chromium
snapcraft statistics isn't public, afaik.
https://qa.debian.org/popcon.php?package=firefox-esr
The `firefox` package is only in `unstable` and thus installing it requires jumping through hoops.
When they re-wrote Firefox for Android, they were unable to give the simple, obvious answer to the effect of "yes, we understand extensions are a core feature of our browser and we plan to fully support extensions on Fenix and won't consider it done until we do". Instead, they talked about whitelisting a handful of extensions, and took three years from shipping Fenix as stable before they had a broad open extension ecosystem up and running again.
Earlier this year Mozilla couldn't provide the simple, obvious response of "we will never sell your personal information". Instead, they tried to make excuses about not agreeing with California's definition of "selling personal information".
A few days ago, we find out that their new CEO can't clearly and emphatically say "we would never take money to break ad blockers, because that goes against everything we stand for".
Now, they seemingly can't even realize that having a "kill switch" calls into doubt whether they actually know what "opt-in" means.
Even when they're trying to do the right thing, they're strangely afraid to commit to doing the right thing when it comes to specifics. They won't say "never" even when it should be easy.
I would guess that of people that would ever go out of their way to use a non-Chrome browser on Android, the fraction who care about extensions is pretty significant.
> Has Add-on shows the percentage of Firefox Desktop clients with user-installed add-ons.
> December 8, 2025
> 45.4%
https://data.firefox.com/dashboard/usage-behavior
Some have disabled telemetry, of course, but how many? Here we can only rely on our own observations, and of all Firefox users I know, it's zero.
(I keep it enabled because I want my voice to be counted — people who have never lived in an autocracy tend to have peculiar views on this.)
I keep lean and only look for an extension or install amd app when it’s clear what problem I have and want to solve.
Honestly, and it's hard for me to say this: I've come around. I still use and love Firefox, but emotionally I'm detaching from it, because fundamentally: all the other FOSS I use is an actual, factual, open source project. And Firefox the browser is FOSS, but Firefox the corporation isn't, and the problem is the corporation seems to be in charge, not the project, which means all their priorities are to make money and drive donations, not what's best for the user necessarily. It means all their communications are written in Corporatese, with vague waffling about everything they're asked and non-committal statements because the next quarter might demand they about-face, as they've done numerous times.
I love the browser. I increasingly find myself disillusioned with the business entity that rides on it's back, and frankly wish it would sod off. Take the money they're getting, and give it to the people actually building the product.
What I honestly fear is that while AI-features are disabled, popups inviting me to enable them again. That, or them auto-enabling them on every update like sometimes has happened with `browser.ml.enable` flag on `about:config`.
A lot of people remember the Mozilla of old, and are just completely depressed at the state of where it has ended up over the last 10 years. They were once a non-profit founded to promote the web and put users first. Now it's just this weird zombie company monetizing the work and good will of a prior generation of engineers that cared about that mission.
It's because he has obviously been thinking about it. That $150M number didn't just come out of nowhere. Someone at Mozilla modelled this. The resulting analysis made it into the CEO's mind so far he even mentioned it without being asked.
This is something that's unthinkable to most of the Mozilla users. That's why it's so shocking.
It's like your son making dinner conversation like "hey I was thinking, if I would sell drugs at school I'd make at least 500$ a week! But don't worry I'm not going to do that!".
I guess we shouldn't worry though, just some random law thought that what they were doing was "selling personal data" but we shouldn't think that it was. No further explanation required.
The thing they can do to win is to start acting like they maintain a free/libre open-source software project. It should be completely fine for Mozilla to make a grand total of $0.00 off of Firefox.
Think of Linux (specifically the kernel) or Python. Sure there's a person whose opinion holds more weight than everyone else's (at least for the kernel), but they typically focus on delivering general guidance to a group of people who are free to create features on their own and present those to leadership. If it's quality and fits what the general purpose of the project is, it gets merged into the trunk, and released with everything else.
That needs to be how Mozilla handles Firefox at this point. If some working group of contributors wants to start an implementation of GenAI in Firefox, let them do so and let the community hash it out. If the community doesn't feel the need to create it, well, then Firefox won't have it... and that's fine.
So many of these free software projects try to do too much and change what the core output of the project is in the process, and they lose sight of what the project is.
That's not the fault of their users, at least not directly. If you want to argue that Firefox users are stifling innovation or trying to steer the product in a direction that would threaten the future viability of Firefox/Mozilla, I would be open to hearing that argument out even though I don't think that's the issue.
Mozilla is the equivalent of a petrostate in the tech sector. They have a bunch of revenue coming in that they didn't really earn, and they have no idea what to do with it to improve their current condition. To me, that's the core issue.
But as an old-school Firefox user, with a slieu of mobile extensions installed and a healthy cynicism about our swan dive into the dark sea of AI ... I have no problem at all with the statements from Mozilla. Outsiders can argue all day about intent, it's the actions that count.
Like the one described in the subsequent toot?
> All AI features will also be opt-in. I think there are some grey areas in what 'opt-in' means to different people (e.g. is a new toolbar button opt-in?)...
https://mastodon.social/@firefoxwebdevs/115740500918701463
It's not a gray area, and "opt-in" isn't something to be weasled-worded around. If the browser has the capability, I don't want it. I want to be able to add it with a plugin, and that's it. Plugins should have full control to whatever is necessary (same as adblock stuff; plenty of security but enough "user beware" to allow truly useful utilities). And AI features should all be plugins. Separate ones, if I had my way, but bundles if that makes more sense. I do not and will not need AI to browse. It's an enhancement. The core product (or at least ONE OF the products offered) should allow me to do without the enhancement. And opt in if I want to. There's nothing gray there, and I'm so fucking sick of mozilla trying to pull this "we disagree with common terminology" horseshit.
How about "Translate" button?
And, if I'm being honest, "translation" is the only feature I would even consider splitting the builds for. At least in that feature I can see why a "default" version of the browser might benefit more people than not by including it. But that doesn't mean that a "clean" version shouldn't be provided. Build the core app, and then include as many plugins as you think "average users" will benefit from in the "default" version. I don't mind being the minority, I just don't think it's inappropriate to ask for only what I need instead of "all the bullshit you want to force me to have".
This seems like special pleading. The browser (and any software package) is full of features that some people use and others don't. Just off the top of my head, these include: the password manager, PDF viewer, dev tools, and the extensions store. Each new SKU that the vendor has to provide is additional effort to build and test, and the result is that it's more expensive to produce the product. Moreover, it makes it harder for users to discover new features what they might want (oh, you wanted view source, you needed Firefox developer edition).
On the specific case of translation, I don't really see much of a distinction between "I need to browse" and "I want to read content that is not in a language that the content provider has supported for me". In both cases, I want to get the content on the site and I'd like the browser to help me do it.
> I don't mind being the minority, I just don't think it's inappropriate to ask for only what I need instead of "all the bullshit you want to force me to have".
And you can have that by building it yourself. It's open source software. What you're really asking for is for Mozilla to build a version of the software that has only the features you personally want.
But, sure, I need to go build it myself because I had the gall to ask "can't I just have the parts I need?"
This is in fact you asking for two SKUs, one with all the plugins (what you call the "default download") and one without ("let me have a download that doesn't include them.")
As for "really is that easy", as usual, it's easy in some cases and not others. To the extent to which things are already modular and developed separately, then yes, it probably is easy. To the extent that things are not currently modular, then it's separate engineering effort to make them so. In some cases that effort might be small (e.g., the new module is all in HTML/JS) and in some cases that effort might be large (e.g., there is extensive C/C++ code that needs to interface with the browser core). I don't know how much about Firefox's AI features to know which category they fall into. But it's almost certainly not zero effort in any case.
whatever you say
The past 15 years has been a slow decline while they were trying to prove some relevancy outside of their core product. With mobile browsers being locked down a decline was going to happen anyways but if they stuck to their guns at least they wouldn't have wasted a bunch of money and maintained more of their base.
Who knows, their position sucks, but they're not going to win anyone by being the worst AI focused browser which happens to have an off switch.
With the bonus that you also get a set of great (and per fork different yet handy) features.
These include:
Waterfox (Firefox) - https://www.waterfox.com/
Zen Browser (Firefox) - https://zen-browser.app/
Librewolf (Firefox) - https://librewolf.net/
Helium (Chrome/Chromium) - https://helium.computer/
Ungoogled Chromium (Chrome/Chromium) - https://github.com/ungoogled-software/ungoogled-chromium
Also as one of the major players, Vivaldi already made a stand against AI and forcefully including (agentic) AI in the web browser: https://vivaldi.com/blog/keep-exploring/. It's a Chromium based browser with a lot of nice features and deep customization options: https://vivaldi.com/
That's why it should ask - once. And offer a "FUCK OFF NEVER ASK ME AGAIN" button rather than "Ask me again later".
https://news.ycombinator.com/newsguidelines.html
>We didn't make the back button an extension even though we could have.
The back button isn't even a KB of extra data and and I'd put navigation as the primary job of a web browser.
I'm not against a built in translator, but it's a strange comparison to a back button.
On a slight tangent, I think there's an under talked about boon yo machine translation: it's widely agreedbti be a comoromise and not a source of truth. That wariness has been missing as of late.
If it was an extension it would be nice if people could fork it with other models. Just like their AI Tab Grouping feature would be much better forked with a deterministic non-AI grouping system.
I want my non-tech family members/friends to install Firefox not because I come over at Christmas, but because they want to. Because it's a browser that "just works." We can't have this if Firefox stays in the pre-ai era.
I know Mozilla doesn't have much good will right now, but hopefully with the exec shakeup, they will right the ship on making FF a great browser. While still staying the best foil to Chrome (both in browser engine, browser chrome, and extension ecosystem).
Imagine you have an AI button. When you click it, the locally running LLM gets a copy of the web site in the context window, and you get to ask it a prompt, e.g. "summarize this".
Imagine the browser asks you at some point, whether you want to hear about new features. The buttons offered to you are "FUCK OFF AND NEVER, EVER BOTHER ME AGAIN", "Please show me a summary once a month", "Show timely, non-modal notifications at appropriate times".
Imagine you choose the second option, and at some point, it offers you a feature described as follows: "On search engine result pages and social media sites, use a local LLM to identify headlines, classify them as clickbait-or-not, and for clickbait headlines, automatically fetch the article in an incognito session, and add a small overlay with a non-clickbait version". Would you enable it?
I'm also now imagining my GPU whirring into life and the accompanying sound of a jetplane getting ready for takeoff, as my battery suddenly starts draining visibly.
Local LLMs for are a pipe dream, the technology fundamentally requires far too much computation for any true intelligence to ever make sense with current computing technologies.
And whatever accelerator you try to put into it, you're not running Gemini3 or GPT-5.1 on your laptop, not in any reasonable time frame.
You dont need to run GPT5.1 to summerize a webpage. Models are small and specialized for different tasks.
And the examples being given of why you'd want AI in your browser are all general text comprehension and conversational discussions about that text, applied to whatever I may be browsing. It doesn't really get less specialized than that.
I'm happy to say that LLM usage will only actually become properly integrated into background work flow when we have performant local models.
People are trying to madly monetise cloud LLMs before the inevitable rise of local only LLMs severely diminishes the market.
Was this pre-1980? I'd say it takes an impressively small amount of imagination even in 1980 to not be able to imaging putting together a dictionary and a spell-check button which just runs though every word in a document in sequence. Even on a 8086 that shouldn't be a big ask (might hang for a bit if your document is decently large, but add in faster processors, even this becomes a non issue).
> voice recognition
For anyone not speaking English, this is still very much not a solved problem, and it might not even be solved for English if you've got a thick accent.
I never use it specifically because of this. Zero voice recognition services or programs are going to recognise 'Play Тёмная ночь, no wait, play Neunundneunzig Luftballons instead', and while that might be an extreme case, simples cases like 'Call Erling Braut Haaland' still consistently fail. Maybe they work fine for the average American, or with other languages if you used it within a very narrow scope ('Turn on the porch light'), but they don't if you're even vaguely international.
> video encoding
Only got solved with dedicated hardware, and honestly, not all that well. Encoding on GPU is only a good idea for realtime applications. Everything else should make use of the better quality CPU encoding provides.
> 3D rendering
This also required dedicated hardware meant to do nothing but push polygons, atleast at framerates that weren't single digit. Anyone imagining a world of CPU driven graphics and dumb display adapters like VGA wouldn't be entirely unjustified in their belief, especially given how early graphics accelerators had some decently large downsides. Sure, your FPS is tolerable now, but instead it just looks like shit.
> audio effects
Anything specific in mind?
You also don't need Gemini3 or GPT anything running locally.
Especially since we know very well that they won't be locally running LLMs, everyone's plan is to siphon your data to their "cloud hybrid AI" to feed into the surveillance models (for ad personalization, and for selling to scammers, law enforcement and anyone else).
I'd prefer to have entirely separate and completely controlled and fire-walled solutions for any useful LLM scenarios.
(You don't need Mullvad to use the browser)
https://mullvad.net/en/browser
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