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Pirate Face Rescues LLM Models from Deletion

569 points · 149 comments · skepticalgenius

  1. wren6991 · · focus · HN ↗
    Speaking to the "uncensored model" angle: there's little reason to distribute abliterated weights anyway. Instead of orthogonalising the weights that write back to the residual stream, you can just orthogonalise the activations themselves. It's equivalent.

    Orthogonalising activations at runtime is computationally cheap. Just distribute the refusal vectors (few thousand floats per layer), then run against the stock weights. Antirez&#x27;s DS4 already supports this: <a href="https:&#x2F;&#x2F;github.com&#x2F;antirez&#x2F;ds4&#x2F;blob&#x2F;8db1d1d155cb0400a86a86b9c62d0defb3a6148b&#x2F;dir-steering&#x2F;README.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;antirez&#x2F;ds4&#x2F;blob&#x2F;8db1d1d155cb0400a86a86b9...

    Abliterated weights are just a bad habit we&#x27;ve gotten into. It&#x27;s also deeply suboptimal from a precision point of view to take a model that&#x27;s already been QATed and distributed in pre-quantised form (DeepSeek V4, Kimi K2.5 or K3...), modify its weights, and re-quantise it. Similarly, abliterated models regain some of their refusal behaviour when they&#x27;re re-quantised after abliteration -- avoidable by keeping the two separate.

    1. nperez · · focus · HN ↗
      Yeah I use a custom fork of llama.cpp that has an abliteration feature that basically does this. It&#x27;s sloppily vibe coded and I don&#x27;t have time to coordinate on a way to do this cleanly upstream, but it&#x27;s absolutely possible and saves a lot of time and bandwidth from being wasted
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