{
  "video_id": "reddit_1uvq1i3",
  "channel_slug": "LocalLLaMA",
  "channel_handle": "r/LocalLLaMA",
  "title": "J-Wash: A novel way to brainwash and customize large language models based on Anthropic's Jacobian-Lens!",
  "url": "https://www.reddit.com/r/LocalLLaMA/comments/1uvq1i3/jwash_a_novel_way_to_brainwash_and_customize/",
  "external_url": "https://github.com/Extraltodeus/J-Wash",
  "upload_date": "20260713",
  "published_at": "2026-07-13T22:12:52+00:00",
  "transcript": "\n\n--- Top Comments ---\n\n\n[31 upvotes] We've gone from finetuning LLMs to brainwashing them\n\n[18 upvotes] Hey there!!! This is what I created and used to make [Nikusui-v1](https://reddit.com/r/LocalLLaMA/comments/1utpxo6/i_created_a_super_harmful_model_d_by_tweaking_its/). You should be able to recreate it by using the config file in this model's HF repository.\n\nThis tool allows to replace concepts inside an LLM and get an actually usable result at export!\n\nI made it through a rush of 4-5 days. I started 16 hours after Anthropic shared the concept.\n\nI've included a few presets to give you some examples and know that the code is a little bit in a rough state currently but I'm sure any dedicated mind will already be able to use it's pretty fun to discover at this point.\n\nI did my best to clean it up and make it good as I could.\n\n~~bugs~~ intellectually challenging easter eggs to reward the curious minds can be present!\n\nI'm eager to get some feedback! :D\n\n\nedit: If you want to get your hands on a checkpoint I recommand to start with Qwen3.5-4B or a llama as I've found them more fun to steer than GPT-OSS for example. You can check already trained lenses [here](https://huggingface.co/neuronpedia/jacobian-lens/tree/main) so to not have to train any to get started! The UI will let you downlo\n\n[15 upvotes] wololo, you are now uncensored\n\n[10 upvotes] This is absolutely going to be used by sleezy people trying to convince people they made a completely new model when it's just a pruned/merged/fine tuned existing model, because now they can just edit the \"I'm deepseek\" into \"I'm <whatever new name they choose>\"\n\nBut also that will happen anyway, not your fault that powerful tools can be misused.",
  "transcript_chars": 1713,
  "ingested_at": "2026-07-14T01:30:04.632252+00:00",
  "source": "reddit",
  "yt_meta": {
    "score": 66,
    "upvote_ratio": 0.96,
    "num_comments": 17,
    "author": "Extraaltodeus",
    "is_self": false
  }
}