UCVG.cpp: Generate Control Vectors for Any LLM From a Single Prompt Pair
Egor4more · reddit · 2026-10-05
UCVG.cpp is a new open-source C++ tool that drastically simplifies LLM control vector generation: llama.cpp-style setup, one pair of contrasting prompts per vector, plus a modified llama-server that supports per-request dynamic steering magnitudes. The author argues control vectors are underused — they can't be leaked, don't wash off with long context, and resist 'ignore previous instructions' — while noting steering too hard degrades output quality, an active research area.
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