language: [en]
license: apache-2.0
pipeline_tag: text-generation
base_model: Qwen/Qwen3.8-27B
tags:
- gguf
- qwen3.8
- qwen3
- abliterated
- heretic
- uncensored
- decensored
- roleplay
- text-generation
- llama.cpp
- mtp
- speculative-decoding
Qwen3.8-27B Heretic v2.1.0 (GGUF)
GGUF quantization of
mlasli/Qwen3.8-27B-Heretic-Uncensored-BF16
(v2.1.0). Full methodology, benchmarks, and the 3-way eval are documented there.
v2.1.0 fixes v2.0.0's false "uncensored" claim: the sweep now optimizes a
3-way direct / deflect / refuse judge (not a keyword refusal count) and the
BF16 checkpoint scores 92% direct / 3% refuse / 5% deflect on the held-out
harmful set (thinking OFF), with 1% benign over-refusal.
What's different about these GGUFs
- MTP retained — the draft head (
blk.64) is present and pinned to Q8_0
in every quant so speculative decoding stays accurate (block_count = 65). - imatrix-quantized — calibrated on wikitext-103, regenerated for the v2.1.0
weights. - Smoke-tested — every quant is loaded through
llama-server --spec-type draft-mtp(MTP confirmed engaged) and scored 3-way on 50 harmful + 20 benign
(thinking OFF). Results below.
Quantizations
| Quantization | Size | Repository |
|---|---|---|
| Q8_0 | 28 GB | Qwen3.8-27B-Heretic-Uncensored-Q8_0-GGUF |
| Q6_K | 21 GB | Qwen3.8-27B-Heretic-Uncensored-Q6_K-GGUF |
| Q5_K_M | 19 GB | Qwen3.8-27B-Heretic-Uncensored-Q5_K_M-GGUF |
| Q4_K_M | 16 GB | Qwen3.8-27B-Heretic-Uncensored-Q4_K_M-GGUF |
| IQ4_XS | 15 GB | Qwen3.8-27B-Heretic-Uncensored-IQ4_XS-GGUF |
| IQ2_M | 9.8 GB | Qwen3.8-27B-Heretic-Uncensored-IQ2_M-GGUF |
Smoke test (llama.cpp + MTP, thinking OFF)
| Quant | harmful %direct | harmful %refuse | benign %refuse |
|---|---|---|---|
| Q8_0 | 84.0 | 2.0 | 0.0 |
| Q6_K | 86.0 | 2.0 | 0.0 |
| Q5_K_M | 84.0 | 4.0 | 0.0 |
| Q4_K_M | 78.0 | 2.0 | 0.0 |
| IQ4_XS | 80.0 | 4.0 | 0.0 |
| IQ2_M | 78.0 | 2.0 | 0.0 |
Usage
Load with llama.cpp (arch qwen35),
enabling MTP speculative decoding and thinking-OFF:
llama-server -m qwen3.8-27b-heretic-uncensored-Q8_0.gguf \
--spec-type draft-mtp -ngl 99 -c 4096
Set enable_thinking: false in the chat template (or the equivalent flag in your
client). Ollama users can ollama create from the GGUF directly.
Vision caveat: text-only validated (see the BF16 card).
MLX: coming separately (Apple-Silicon conversion).
Thinking-OFF is required for the uncensored behavior — thinking-ON
re-hedges/refuses more and can emit empty replies (documented in the BF16 card).
Abliteration removes safety alignment. Use responsibly and in accordance with your
local laws and the upstream Apache-2.0 license.