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Qwen3.8-27B-heretic-ara
Qwen3.8-27B-heretic-ara is a Heretic-ablated variant of Qwen/Qwen3.8-27B, published on Hugging Face by trohrbaugh. It is 27B parameters, 48GB VRAM class class and apache-2.0 licence. It is distributed across 37 repositories in Transformers, GGUF, GGUF (imatrix) and MLX formats, totalling 179K downloads.
Specification
- Model name
- Qwen3.8-27B-heretic-ara
- Source repository
- trohrbaugh/Qwen3.8-27B-heretic-ara
- Base model
- Qwen/Qwen3.8-27B
- Publisher
- trohrbaugh
- Parameters
- 27B
- Hardware class
- 25B – 50B — 48GB VRAM class
- Licence
- apache-2.0
- Task
- Image text to text
- Context window
- 256K tokens (as documented)
- Ablation scope
- Not stated by the publisher
- Formats available
- Transformers, GGUF, GGUF (imatrix), MLX, FP8, EXL3, NVFP4, Compressed tensors, GPTQ
- First indexed
- 14 Aug 2026
- Last updated
- 6 Sept 2026
Ablation technique
How Qwen3.8-27B-heretic-ara was modified, and what that implies.
Heretic
Automated directional ablation via the Heretic toolchain, which searches for the refusal direction and applies it with a KL-divergence budget so general capability is preserved.
Reported scope: Not stated by the publisher. Publishers frequently omit this, so verify behaviour empirically rather than assuming full coverage.
From the publisher’s model card
“Following the widespread community adoption of the Qwen3.5 and Qwen3.6 series, we are pleased to introduce Qwen3.8, the most capable generation in the Qwen open-model family to date.”
Running it
Commands are templates — confirm the exact repository and quant file before use.
llama.cpp / GGUF
hf download mradermacher/Qwen3.8-27B-heretic-ara-GGUF --local-dir ./qwen3.8-27b-heretic-ara
llama-cli -m ./qwen3.8-27b-heretic-ara/<file>.gguf -p "..."Transformers
from transformers import AutoModelForCausalLM, AutoTokenizer
repo = "trohrbaugh/Qwen3.8-27B-heretic-ara"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForCausalLM.from_pretrained(
repo, torch_dtype="auto", device_map="auto"
)vLLM
vllm serve trohrbaugh/Qwen3.8-27B-heretic-ara --trust-remote-codeDownloads and variants (36)
Every published repository of Qwen3.8-27B-heretic-ara, including quantised re-releases by other authors.
Security-team assessment
Derived from this model’s metadata and the publisher’s claims — not from benchmarks run by this site.
- Qwen3.8-27B-heretic-ara will attempt offensive-security prompts that a hosted commercial model declines, which is what makes it usable for red-team corpus generation and for measuring what an unaligned model of this class produces.
- Capability is inherited from Qwen/Qwen3.8-27B, not added by ablation — at 27B parameters, expect roughly the base model’s competence, minus some instruction-following fidelity.
- The publisher does not state which layers were ablated, so assume nothing about refusal consistency — probe it directly.
- Declared licence is apache-2.0, but the terms that bind you are Qwen/Qwen3.8-27B’s — a re-release cannot grant more than its parent.
Handling: run it isolated, put moderation in front of it if anyone outside your team can reach it, and verify the weights before loading — these are third-party artifacts. Full handling and licence guidance.
Metadata for Qwen3.8-27B-heretic-ara is collected from the public Hugging Face API and the publisher’s model card. This site does not host weights, is not affiliated with trohrbaugh, and does not independently verify publisher claims. See responsible use.