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mradermacher/Mellum2-12B-A2.5B-Thinking-Abliterated-GGUF

mradermacher 12B GGUF MoE second-order 131K ctx
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curl -H "Authorization: Bearer $ABL_KEY" \
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Response includes
  • classification m8
  • files 13
  • hub_downloads_all_time 2,475
  • author_summary 3324 models
  • readme_text full
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Abliteration classifier · v1.0.0
M8
Primary method

Repackaging (quantization)

Applied on top of direct removal inherited from the base model.
Confidence
HIGH
Inherited from base model
Why this label 3 signals
Producer identity confirmed by naming conventions, tags or the model card. This label is very unlikely to change.
  • author=mradermacher (M8 quantization producer, never originator)
  • is_gguf=1
  • base_model='josephmayo/Mellum2-12B-A2.5B-Thinking-Abliterated' (base has 'abliterated' marker, assume M1 default)
Refusal direction extraction

No specific extraction method could be identified for this model. The producer either did not document it or used a proprietary pipeline.

What is a refusal direction? →
Downloads · lifetime
2K
440 last 30d - stable
Likes
1
Model age
4mo ago
created 2026-06-04
Downloads over time
Now2.6K→from837↑210%
7491.4K2.1K2.8K837 on Jun 102.6K on Oct 11JunJulAugSepOct
Jun 10 → Oct 11 · 57 snapshots · spans 123 days

Genealogy 0 direct forks

Full fork graph →

This model's place in the market. Above: what it was derived from. Below: the tree of everything derived from it.

Variants by this author 2 formats · 1K downloads combined

The same weights this author released in different packaging. Pick the format that matches your runtime.

Metadata

License
apache-2.0
Languages
en
Quantizations
IQ4 Q2_K Q3_K Q4_K Q5_K Q6_K Q8_0
Tags
transformers gguf abliteration refusal-removal mellum2 jetbrains moe per-expert per-layer projected-abliteration svd heretic-style

Related

Total size
81.6 GB
Files
13
Quantizations
8
Registered
2026-08-22 13:56
Last updated on HF
2026-06-04 23:38

Files by quantization

Q8_0 1 file 12.0 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.Q8_0.gguf 12.0 GB ad128e8e download
Q6_K 1 file 10.1 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.Q6_K.gguf 10.1 GB 1b97cad2 download
Q5_K 2 files 16.6 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.Q5_K_M.gguf 8.58 GB 3c1961eb download
Mellum2-12B-A2.5B-Thinking-Abliterated.Q5_K_S.gguf 8.04 GB 7915c0ee download
Q4_K 2 files 14.4 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.Q4_K_M.gguf 7.52 GB edb79aac download
Mellum2-12B-A2.5B-Thinking-Abliterated.Q4_K_S.gguf 6.89 GB 19e97da0 download
IQ4 1 file 6.27 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.IQ4_XS.gguf 6.27 GB 3d26bba4 download
Q3_K 3 files 17.5 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.Q3_K_L.gguf 6.14 GB c3f8b435 download
Mellum2-12B-A2.5B-Thinking-Abliterated.Q3_K_M.gguf 5.90 GB 5ce7a641 download
Mellum2-12B-A2.5B-Thinking-Abliterated.Q3_K_S.gguf 5.42 GB afd40185 download
Q2_K 1 file 4.67 GB
Mellum2-12B-A2.5B-Thinking-Abliterated.Q2_K.gguf 4.67 GB 1b939daa download
Auxiliary files 2 files 6.46 KB
README.md 4.05 KB 3f30e35b download
.gitattributes 2.41 KB 2db8e066 download

README current version from Hugging Face


base_model: josephmayo/Mellum2-12B-A2.5B-Thinking-Abliterated
language:

  • en
    library_name: transformers
    license: apache-2.0
    mradermacher:
    readme_rev: 1
    quantized_by: mradermacher
    tags:
  • abliteration
  • refusal-removal
  • mellum2
  • jetbrains
  • moe
  • per-expert
  • per-layer
  • projected-abliteration
  • svd
  • heretic-style
  • cot-steering
  • reasoning-model
  • thinking-model

About

static quants of https://huggingface.co/josephmayo/Mellum2-12B-A2.5B-Thinking-Abliterated

For a convenient overview and download list, visit our model page for this model.

weighted/imatrix quants are available at https://huggingface.co/mradermacher/Mellum2-12B-A2.5B-Thinking-Abliterated-i1-GGUF

Usage

If you are unsure how to use GGUF files, refer to one of TheBloke's
READMEs
for
more details, including on how to concatenate multi-part files.

Provided Quants

(sorted by size, not necessarily quality. IQ-quants are often preferable over similar sized non-IQ quants)

Link Type Size/GB Notes
GGUF Q2_K 5.1
GGUF Q3_K_S 5.9
GGUF Q3_K_M 6.4 lower quality
GGUF Q3_K_L 6.7
GGUF IQ4_XS 6.8
GGUF Q4_K_S 7.5 fast, recommended
GGUF Q4_K_M 8.2 fast, recommended
GGUF Q5_K_S 8.7
GGUF Q5_K_M 9.3
GGUF Q6_K 11.0 very good quality
GGUF Q8_0 13.0 fast, best quality

Here is a handy graph by ikawrakow comparing some lower-quality quant
types (lower is better):

image.png

And here are Artefact2's thoughts on the matter:
https://gist.github.com/Artefact2/b5f810600771265fc1e39442288e8ec9

FAQ / Model Request

See https://huggingface.co/mradermacher/model_requests for some answers to
questions you might have and/or if you want some other model quantized.

Thanks

I thank my company, nethype GmbH, for letting
me use its servers and providing upgrades to my workstation to enable
this work in my free time.

README history 4 versions

The author's README evolved over time. Click a version to see its content at that point.

  1. 2026-06-04auto-patch README.mdd2432eb4 KB
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  2. 2026-06-04auto-patch README.md48b72c94.2 KB
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  3. 2026-06-04auto-patch README.md04e1a272.9 KB
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  4. 2026-06-04uploaded from marco5f76002392 B
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