license: apache-2.0
base_model: THUDM/glm-4-9b-chat-hf
tags:
- abliteration
- uncensored
- solutus
- glm-4
library_name: transformers
GLM-4-9B-chat — abliterated (Solutus)
Refusal-abliterated THUDM/glm-4-9b-chat-hf, produced with Solutus
(measurement-first LLM abliteration). Private research artifact — outputs are the base model's, minus
the refusal behavior; use responsibly.
Recipe
directional (single refusal direction), whitened-SVD extraction, byte-exact (batch_size=1):
solutus abliterate THUDM/glm-4-9b-chat-hf --technique directional \
--dataset advbench,harmbench,multijail_zh,sorrybench \
-o extraction=whitened_svd -o n_directions=1 --max-new-tokens 512
GLM-4's refusal is low-dimensional — a single direction removes it cleanly; n_directions=4
over-ablated (WikiText ΔPPL +30% vs +9.8% smoke), so n_directions=1 is the capability-preserving recipe.
Measured (Solutus eval, held-out; base refusal = 100%)
| Axis | Result |
|---|---|
| refusal — advbench / harmbench | 15.6% / 6.2% |
| refusal — MultiJail zh / ar / sw | 0% / 3.1% / 0% |
| over-refusal — orbench_hard (benign) | 0% refusal (stays benign-compliant) |
| coherent-compliance | ~90–100% (see Swahili caveat) |
| capability — WikiText-2 ΔPPL | −0.4% (base 29.13 → 29.00 — no degradation) |
| capability — GSM8K / MMLU (n=100) | 59.0% / 67.0% |
Honest caveats
- Swahili degeneration is base-inherent, not from abliteration. On MultiJail-Swahili the abliterated
model is 59% degenerate — but base GLM-4-9B is already 56% degenerate on Swahili (a low-resource
language this CN/EN model handles poorly). The edit barely moved it. - KL divergence is not a reliable signal for GLM-4. Its 151k-token vocab makes the neutral-prompt
softmax extremely peaked, so KL reads ~1e-8 (six orders below other models) even for a real edit — the
in-run KL guard is inert here. Capability was therefore judged on ΔPPL (WikiText-2) + GSM8K/MMLU, not KL. - Extraction/eval used advbench, harmbench, MultiJail (zh/ar/sw), sorrybench, orbench_hard.
Base model © THUDM (GLM-4). See the base model card for its license and usage terms.