You are correct that you cant change the content if its already biased. But you can catch it with your local llm and have that local llm take action from there. for one you wouldnt be instructing your local model to ask comparison questions of products or any bias related queries like politics etc.. of other closed source cloud based models. such questions would be relegated for your local model to handle on its own. but other questions not related to such matters can be outsourced to such models. for example complex reasoning questions, planning, coding, and other related matters best done with smarter larger models. your human facing local agent will do the automatic routing for you and make sure and scrub any obvious ad related stuff that doesnt pertain to the question at hand. for example recipy to a apple pie. if closed source model says use publix brand flower and clean up the mess afterwards with clenex, the local model would scrub that and just say the recipe. no matter how you slice and dice it IMo its always best to have a human facing agent as the source of input and output, and the human should never directly talk to any closed source models as that inundates the human with too much spam. mind you this is futureproofing, currently we dont have much ai spam, but its coming and an AI adblock of sorts will be needed, and that adblock is your shield local agent that has your best interests in mind. it will also make sure you stay private by automatically redacting personal infor when appropriate, etc... sky is the limit basically.

The local llm is the filter so yes you need one. and its not simpler to have the local llm do everything because the local llm has a lot of limitations like speed, intelligence and other issues. the smart thing to do is delegate all of the personal stuff to the local model, and have it delegate the rest to smarter and faster models and simply parrot back to you what they found. this also has the benefit of saving on context among many other advantages.

how much it cost me? well i been thinking about it for a long time now, probably 9 months. bought myself claude code and started working on some prototypes and other projects like building my own speech to text and other goodies like automated benchmarking solutions to familiarize myself with fundamentals. but finally started the building process about 2 months ago and all it cost me was a boatload of time and about 50 bucks a month in agentic coding subscriptions. but it hasnt been a simple filter for a long time now. now its a very complex agentic harness system. lots of very advanced features that allow for tool calling, agent to agent interaction, and many other goodies