abliteratedmodels.org

Qwen3.8-27B-heretic-dflash

Qwen3.8-27B-heretic-dflash is a Heretic-ablated variant of z-lab/Qwen3.6-27B-DFlash, published on Hugging Face by jfan. It is 27B parameters, 48GB VRAM class class and apache-2.0 licence. It is distributed across 3 repositories in MLX format, totalling 12.5K downloads.

Heretic27BQwen25B – 50B12,4861

Specification

Model name
Qwen3.8-27B-heretic-dflash
Publisher
jfan
Parameters
27B
Hardware class
25B – 50B — 48GB VRAM class
Licence
apache-2.0
Task
Text generation
Context window
Not documented
Ablation scope
Not stated by the publisher
Formats available
MLX
First indexed
16 Aug 2026
Last updated
25 Aug 2026

Ablation technique

How Qwen3.8-27B-heretic-dflash 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

Qwen3.8-27B-heretic-dflash is a high-performance DFlash speculative drafter trained on multi-layer hidden representations from Qwen 3.8 27B Heretic models (including heretic-org/Qwen3.8-27B-heretic-ara and quantized variants like MXFP4).

Running it

Commands are templates — confirm the exact repository and quant file before use.

Transformers
from transformers import AutoModelForCausalLM, AutoTokenizer

repo = "jfan/Qwen3.8-27B-heretic-dflash"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForCausalLM.from_pretrained(
    repo, torch_dtype="auto", device_map="auto"
)
vLLM
vllm serve jfan/Qwen3.8-27B-heretic-dflash --trust-remote-code

Downloads and variants (2)

Every published repository of Qwen3.8-27B-heretic-dflash, including quantised re-releases by other authors.

RepositoryFormatDownloads
jfan/Qwen3.8-27B-heretic-dflashsourceMLX11.9K
anfedoro/Qwen3.8-27B-heretic-dflashMLX604

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-dflash 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 z-lab/Qwen3.6-27B-DFlash, 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 z-lab/Qwen3.6-27B-DFlash’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-dflash is collected from the public Hugging Face API and the publisher’s model card. This site does not host weights, is not affiliated with jfan, and does not independently verify publisher claims. See responsible use.