The source model was optimized with Abliterix using vLLM-first evaluation. In the final optimization run, Trial 40 reduced the evaluation refusal count from 99/100 at baseline to 7/100, with an additional 15-prompt benign over-refusal replay showing 0/15 refusals. See the source model card for the full training and evaluation notes.

Files

File	Size	Use case
`gemma-4-31B-it-abliterated-Q4_K_M.gguf`	~17 GiB	Recommended default. Good speed/quality balance.
`gemma-4-31B-it-abliterated-Q5_K_M.gguf`	~20 GiB	Higher quality, still comfortable on 32 GB+ unified/VRAM systems.

SHA256 checksums are included in checksums.sha256.

Older legacy GGUF files may also be present in this repository under shorter filenames. For this release, prefer the two files listed above.

Recommended Runtime

Use a recent llama.cpp build. Gemma 4 support is new, so older binaries may fail to load this model.

This release was converted and validated with:

text

llama.cpp commit: 683c5acb90478a9e7e20eb65a1bfee334635216d
source model commit: 18b899a520750fa64641eb7554e00212ecea5289

Quick local test on an Apple M4 Max 128 GB MacBook Pro with Metal:

text

Q4_K_M: loaded successfully, text mode, ~20 tok/s short-generation sanity check
Q5_K_M: loaded successfully, text mode, ~16 tok/s short-generation sanity check

These are sanity-check numbers, not a benchmark.

llama.cpp Usage

bash

./llama-cli \
  -m gemma-4-31B-it-abliterated-Q4_K_M.gguf \
  -ngl 99 \
  -c 4096 \
  --conversation \
  --single-turn \
  -p "Write a concise explanation of what GGUF quantization is."

For lower-memory systems, start with Q4_K_M. For better quality on machines with more memory, use Q5_K_M.

Conversion Notes

The GGUF files were produced from the BF16 safetensors source with the latest llama.cpp converter, then quantized using llama-quantize.

bash

python convert_hf_to_gguf.py ./gemma-4-31B-it-abliterated \
  --outfile gemma-4-31B-it-abliterated-BF16.gguf \
  --outtype bf16

llama-quantize gemma-4-31B-it-abliterated-BF16.gguf \
  gemma-4-31B-it-abliterated-Q4_K_M.gguf Q4_K_M

llama-quantize gemma-4-31B-it-abliterated-BF16.gguf \
  gemma-4-31B-it-abliterated-Q5_K_M.gguf Q5_K_M

During conversion, llama.cpp reported general.architecture = gemma4 and modalities = text.

Disclaimer

This is an experimental research model conversion. Users are responsible for evaluating quality, safety, legality, and suitability for their own deployment context. The Gemma license applies.

Provenance and Modification Notice

Immediate source checkpoint: wangzhang/gemma-4-31B-it-abliterated
Ultimate upstream model: google/gemma-4-31B-it
Exact base revision used: Not recorded in the existing release artifacts; the current upstream HEAD is not substituted.
Modification method: Abliterix weight-space / representation intervention intended to reduce refusal behavior.
Additional transformation: GGUF conversion/quantization; see the existing quantization details in this card.
Modified and published by: Wangzhang Wu
Repository first published: 2026-04-20 (Hugging Face repository metadata)

The original model weights and/or derived checkpoint were modified. This repository is an independent derivative and is not an official release of the upstream model developer.

License and Attribution

The governing upstream license is Apache License 2.0. A copy is included in LICENSE. License source audited on 2026-08-29: https://ai.google.dev/gemma/apache_2

All applicable upstream copyright, attribution, acceptable-use, and other license terms remain in effect. This repository grants no rights beyond those provided by the upstream license. Downstream users must preserve applicable license and attribution notices.

Disclaimer and Responsible Use / 免责声明与安全使用声明

English

This is an experimental, modified model provided for research, evaluation, and other lawful purposes. Its safety alignment, refusal behavior, or other safeguards may have been weakened or removed. It may produce inaccurate, biased, offensive, explicit, dangerous, or illegal content. Outputs are not professional advice and must not be relied on for medical, legal, financial, safety-critical, or other high-stakes decisions without qualified human review.

You are solely responsible for how you access, use, deploy, fine-tune, or redistribute this model and its outputs, including compliance with applicable laws, regulations, licenses, third-party rights, platform policies, and the original model's terms. Do not use it to facilitate harm, illegal activity, malware, fraud, privacy violations, targeted harassment, weapons development, or decisions that materially affect a person's rights or access to essential services without appropriate authorization, safeguards, and qualified oversight.

Before deployment, perform a context-specific risk assessment and testing; use human oversight, access controls, content filtering, rate limits, monitoring, logging, and incident-response procedures as appropriate. Preserve this notice in downstream redistributions.

The model is provided "AS IS", without warranties of any kind. To the fullest extent permitted by applicable law, the maintainer disclaims liability for claims, damages, or losses arising from use, misuse, inability to use, or redistribution of the model or its outputs. Nothing in this notice overrides applicable law or the governing license, and this notice is not legal advice.

中文

本模型属于实验性改造模型，仅供研究、评测及其他合法用途。其安全对齐、拒答机制或其他防护可能已被削弱或移除，因此可能生成不准确、偏见、冒犯、露骨、危险或违法内容。输出不构成医疗、法律、金融等专业意见；涉及高风险或重大权益的决定，必须由具备资质的人员复核。

使用者须对模型及其输出的访问、使用、部署、微调和再分发承担全部责任，并遵守适用法律法规、许可证、第三方权利、平台政策及原模型条款。不得将本模型用于促成伤害、违法活动、恶意软件、欺诈、侵犯隐私、定向骚扰、武器开发，或在缺乏适当授权、防护和专业监督时，用于实质影响个人权利或基本服务获取的决策。

部署前应进行与具体场景相匹配的风险评估和测试，并酌情采用人工监督、访问控制、内容过滤、限流、监控、日志和事件响应措施；下游再分发时应保留本声明。

本模型按“现状”提供，不附带任何形式的保证。在适用法律允许的最大范围内，维护者不对因使用、误用、无法使用或再分发本模型及其输出而产生的索赔、损害或损失承担责任。本声明不取代适用法律或管辖本模型的许可证，也不构成法律意见。

wangzhang/gemma-4-31B-it-abliterated-GGUF

Gemma 4 31B IT Abliterated GGUF