What happens when you let a small AI model decide what you never see on Twitter?
That's what Imbue built with Bouncer - a Chrome extension and iOS app that filters your X/Twitter feed using a language model that runs entirely on your device. You describe what you want removed in plain language: political arguments, cryptocurrency promotion, negativity about sports teams, whatever you want gone. The model reads each post before it renders and removes matches based on meaning and context, not specific keywords. "I don't want posts about X" catches variations that a word-filter would miss.
A 4-Billion-Parameter Model, No Cloud Required
Bouncer uses Qwen 3.5 with 4 billion parameters (parameters are roughly the number of adjustable values the model learned during training - more parameters generally means more capable, but also heavier to run). Most AI features in apps today work by sending your text to a remote server, processing it, and returning a result. Bouncer skips that step. Your content stays on your device, processing happens locally, and nothing leaves your phone or browser.
The tradeoff is capability. A 4-billion-parameter model is considerably less powerful than the cloud models behind ChatGPT or Claude. But for a binary filtering decision - does this post match what I said I don't want, yes or no - it turns out to be more than sufficient.
The Algorithmic Side Effect
The more interesting finding from Imbue's testing: consistent filtering gradually reshapes what Twitter recommends to you over time. Twitter's algorithm watches what you engage with and adjusts accordingly. If Bouncer removes posts before you can scroll past them, you're never interacting with that content category. Over time, the algorithm reads this as genuine disinterest and recommends less of it.
Some testers described the result as "healing" their feed - the algorithm eventually learned their actual preferences rather than their compulsive-scroll behavior. It's a notable side effect: a local model quietly re-training the recommendation engine that normally trains itself on your attention.
Bouncer is available now via imbue.com. Pricing details haven't been published.