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Model: mlabonne/gemma-3-4b-it-abliterated
Source: Original Platform

README.md

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+---
+license: gemma
+library_name: transformers
+pipeline_tag: image-text-to-text
+base_model: google/gemma-3-4b-it
+---
+
+# 💎 Gemma 3 4B IT Abliterated
+
+![image/png](https://cdn-uploads.huggingface.co/production/uploads/61b8e2ba285851687028d395/WjFfc8hhj20r5XK07Yny9.png)
+<center><a href="https://huggingface.co/mlabonne/gemma-3-1b-it-abliterated">Gemma 3 1B Abliterated</a> • <a href="https://huggingface.co/mlabonne/gemma-3-12b-it-abliterated">Gemma 3 12B Abliterated</a> • <a href="https://huggingface.co/mlabonne/gemma-3-27b-it-abliterated">Gemma 3 27B Abliterated</a></center>
+
+This is an uncensored version of [google/gemma-3-4b-it](https://huggingface.co/google/gemma-3-4b-it) created with a new abliteration technique.
+See [this article](https://huggingface.co/blog/mlabonne/abliteration) to know more about abliteration.
+
+I was playing with model weights and noticed that Gemma 3 was much more resilient to abliteration than other models like Qwen 2.5. 
+I experimented with a few recipes to remove refusals while preserving most of the model capabilities.
+
+Note that this is fairly experimental, so it might not turn out as well as expected. I saw some garbled text from time to time (e.g., "It' my" instead of "It's my").
+
+I recommend using these generation parameters: `temperature=1.0`, `top_k=64`, `top_p=0.95`.
+
+## ⚡️ Quantization
+
+* **GGUF**: https://huggingface.co/mlabonne/gemma-3-4b-it-abliterated-GGUF
+
+## ✂️ Layerwise abliteration
+
+![image/png](https://cdn-uploads.huggingface.co/production/uploads/61b8e2ba285851687028d395/fmwidMV9SvlStlsogCcea.png)
+
+In the original technique, a refusal direction is computed by comparing the residual streams between target (harmful) and baseline (harmless) samples.
+
+Here, the model was abliterated by computing a refusal direction based on hidden states (inspired by [Sumandora's repo](https://github.com/Sumandora/remove-refusals-with-transformers/)) for most layers (layer 7 to 29), independently.
+This is combined with a refusal weight that follows a symmetric pattern from 0.05 to a peak of 0.55.
+
+This created a very high acceptance rate (>90%) and still produced coherent outputs.