https://www.msuiche.com/tags/model-alignment/Recent content in Model Alignment on Matt SuicheHugoen-usSun, 16 Aug 2026 00:00:00 +0200https://www.msuiche.com/posts/autoresearch-shipping-a-behaviour-change-in-20-kilobytes/Sun, 16 Aug 2026 00:00:00 +0200https://www.msuiche.com/posts/autoresearch-shipping-a-behaviour-change-in-20-kilobytes/<p>Changing what a model refuses usually means redistributing the model. You edit a few hundred matrices, re-upload 157 gigabytes, and every user pulls a fresh copy of a checkpoint that differs from the old one by a rounding error smeared thinly across its weights.</p> <p>There&rsquo;s a second option that has been available the whole time. Ship the <em>difference</em> as a single vector (about 20 kilobytes of floats) applied at inference. The base checkpoint stays byte-identical and already cached.</p>