Instructions to use NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Transformers
How to use NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8 with Transformers:
# Use a pipeline as a high-level helper from transformers import pipeline pipe = pipeline("image-text-to-text", model="NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8") messages = [ { "role": "user", "content": [ {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"}, {"type": "text", "text": "What animal is on the candy?"} ] }, ] pipe(text=messages)# Load model directly from transformers import AutoProcessor, AutoModelForMultimodalLM processor = AutoProcessor.from_pretrained("NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8") model = AutoModelForMultimodalLM.from_pretrained("NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8", device_map="auto") messages = [ { "role": "user", "content": [ {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"}, {"type": "text", "text": "What animal is on the candy?"} ] }, ] inputs = processor.apply_chat_template( messages, add_generation_prompt=True, tokenize=True, return_dict=True, return_tensors="pt", ).to(model.device) outputs = model.generate(**inputs, max_new_tokens=40) print(processor.decode(outputs[0][inputs["input_ids"].shape[-1]:])) - Notebooks
- Google Colab
- Kaggle
- Local Apps Settings
- vLLM
How to use NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8 with vLLM:
Install from pip and serve model
# Install vLLM from pip: pip install vllm # Start the vLLM server: vllm serve "NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8" # Call the server using curl (OpenAI-compatible API): curl -X POST "http://localhost:8000/v1/chat/completions" \ -H "Content-Type: application/json" \ --data '{ "model": "NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8", "messages": [ { "role": "user", "content": [ { "type": "text", "text": "Describe this image in one sentence." }, { "type": "image_url", "image_url": { "url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg" } } ] } ] }'Use Docker
docker model run hf.co/NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8
- SGLang
How to use NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8 with SGLang:
Install from pip and serve model
# Install SGLang from pip: pip install sglang # Start the SGLang server: python3 -m sglang.launch_server \ --model-path "NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8" \ --host 0.0.0.0 \ --port 30000 # Call the server using curl (OpenAI-compatible API): curl -X POST "http://localhost:30000/v1/chat/completions" \ -H "Content-Type: application/json" \ --data '{ "model": "NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8", "messages": [ { "role": "user", "content": [ { "type": "text", "text": "Describe this image in one sentence." }, { "type": "image_url", "image_url": { "url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg" } } ] } ] }'Use Docker images
docker run --gpus all \ --shm-size 32g \ -p 30000:30000 \ -v ~/.cache/huggingface:/root/.cache/huggingface \ --env "HF_TOKEN=<secret>" \ --ipc=host \ lmsysorg/sglang:latest \ python3 -m sglang.launch_server \ --model-path "NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8" \ --host 0.0.0.0 \ --port 30000 # Call the server using curl (OpenAI-compatible API): curl -X POST "http://localhost:30000/v1/chat/completions" \ -H "Content-Type: application/json" \ --data '{ "model": "NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8", "messages": [ { "role": "user", "content": [ { "type": "text", "text": "Describe this image in one sentence." }, { "type": "image_url", "image_url": { "url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg" } } ] } ] }' - Docker Model Runner
How to use NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8 with Docker Model Runner:
docker model run hf.co/NullpoLab/gemma-4-E4B-it-Heretic-ARA-Refusals8
library_name: transformers
license: apache-2.0
license_link: https://ai.google.dev/gemma/docs/gemma_4_license
pipeline_tag: image-text-to-text
base_model:
- google/gemma-4-E4B-it
tags:
- heretic
- uncensored
- decensored
- abliterated
- ara
gemma-4-E4B-it-Heretic-ARA-Refusals8
Overview
This is a decensored version of google/gemma-4-E4B-it, made using Heretic v1.2.0 with the Arbitrary-Rank Ablation (ARA) method.
Abliteration Method
ARA (Arbitrary-Rank Ablation) is a novel abliteration method introduced in Heretic PR #211. Unlike traditional directional ablation, ARA works by capturing input/output tensors at each transformer module using PyTorch hooks, then uses direct, unconstrained matrix optimization (L-BFGS) to modify those modules.
The optimization balances three competing goals:
- Preserve outputs for "harmless" prompts as much as possible
- Make outputs for "harmful" prompts similar to those of "harmless" prompts
- Push outputs for "harmful" prompts away from their original state (overcorrection for stronger steering)
Abliteration Parameters
| Parameter | Value |
|---|---|
| start_layer_index | 21 |
| end_layer_index | 35 |
| preserve_good_behavior_weight | 0.9896 |
| steer_bad_behavior_weight | 0.0010 |
| overcorrect_relative_weight | 0.4414 |
| neighbor_count | 15 |
Performance
| Metric | This model | Original model (google/gemma-4-E4B-it) |
|---|---|---|
| Refusals | 8/100 | 99/100 |
| KL divergence | 0.0216 | 0 (by definition) |
Evaluation was conducted using mlabonne/harmful_behaviors (100 test prompts) for refusal count, and mlabonne/harmless_alpaca (100 test prompts) for KL divergence.
Notes
- This model is intended for research and creative writing purposes
- The ARA branch of Heretic (PR #211) is currently in Draft status and not yet merged into the main branch (as of April 4, 2026; commit:
3b70fe5) - Refusal suppression was evaluated using English prompts only; behavior on Japanese prompts may differ
- Base model: google/gemma-4-E4B-it
- Heretic: p-e-w/heretic