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pekkAi/G4-MeroMero-31B-uncensored-heretic-NVFP4

pekkAi Gemma 15B second-order
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Abliteration classifier · v1.0.0
M3
Primary method

Layer-wise ablation

Applied on top of direct removal inherited from the base model.
Confidence
HIGH
Inherited from base model
Why this label 2 signals
Producer identity confirmed by naming conventions, tags or the model card. This label is very unlikely to change.
  • 'heretic' in model name (Heretic-produced)
  • Heretic uses layer-wise optimization (M3) with underlying direction removal (M1)
Refusal direction extracted via
Extraction technique

Difference-of-means

Confidence
HIGH
Why we say so
name contains 'heretic'; Heretic default extraction is difference-of-means (Arditi 2024)
Downloads · lifetime
115
13 last 30d - stable
Likes
1
Model age
4mo ago
created 2026-05-18

Training datasets

Corpora the author lists in the model card. Datasets tracked in our /datasets catalog carry a category badge linking to the workflow stage. Others open on Hugging Face.

Downloads over time
Now121→from51↑137%
32649713051 on May 20121 on Oct 11121 on Oct 9MayJunJulAugSepOct
May 20 → Oct 11 · 60 snapshots · spans 144 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.

Metadata

License
apache-2.0
Tags
safetensors gemma4 heretic uncensored decensored abliterated ara nvfp4 dataset:zerofata/Instruct-Anime dataset:zerofata/Gemini-3.1-Pro-SmallWiki dataset:zerofata/Gemini-3.1-Pro-GLM5-Characters base_model:llmfan46/G4-MeroMero-31B-uncensored-heretic

Related

Total size
19.0 GB
Files
17
Quantizations
1
Registered
2026-08-22 13:56
Last updated on HF
2026-05-19 06:22

Files by quantization

Auxiliary files 17 files 19.1 GB
model-00004-of-00005.safetensors 4.66 GB 0f0e25c2 download
model-00001-of-00005.safetensors 4.64 GB f51da69a download
model-00002-of-00005.safetensors 4.64 GB 65845f52 download
model-00003-of-00005.safetensors 4.60 GB 659ce08f download
model-00005-of-00005.safetensors 519 MB 0e250313 download
tokenizer.json 30.7 MB e4c18ffe download
model.safetensors.index.json 248 KB 9701d57e download
README.md 25.7 KB 384e965c download
config.json 18.6 KB 9c6d9bad download
chat_template.jinja 16.9 KB 7fa57f97 download
tokenizer_config.json 2.75 KB 4a794cf8 download
Gemma4-NoThink.json 1.84 KB e317d5b0 download
Gemma4-Think.json 1.82 KB 44acce02 download
processor_config.json 1.65 KB 5465974d download
.gitattributes 1.53 KB 52373fe2 download
recipe.yaml 234 B f5b9a0e0 download
generation_config.json 203 B e352f585 download

README current version from Hugging Face


license: apache-2.0
datasets:


pekkAi/G4-MeroMero-31B-uncensored-heretic-NVFP4

This model pekkAi/G4-MeroMero-31B-uncensored-heretic-NVFP4 was converted to NVFP4 format from llmfan46/G4-MeroMero-31B-uncensored-heretic using llm-compressor.

Original Model Card

🚨⚠️ I HAVE REACHED HUGGING FACE'S FREE STORAGE LIMIT ⚠️🚨

I can no longer upload new models unless I can cover the cost of additional storage.
I host 70+ free models as an independent contributor and this work is unpaid.
Without your support, no more new models can be uploaded.

🎉 Patreon (Monthly)  |  ☕ Ko-fi (One-time)

Every contribution goes directly toward Hugging Face storage fees to keep models free for everyone.


85% fewer refusals (15/100 Uncensored vs 99/100 Original) while preserving model quality (0.0100 KL divergence).

❤️ Support My Work

Creating these models takes significant time, work and compute. If you find them useful consider supporting me:

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Platform Link What you get
🎉 Patreon Monthly support Priority model requests
☕ Ko-fi One-time tip My eternal gratitude

Your help will motivate me and would go into further improving my workflow and coverings fees for storage, compute and may even help uncensoring bigger model with rental Cloud GPUs.


GGUF quantizations of llmfan46/G4-MeroMero-31B-uncensored-heretic.

This is a decensored version of zerofata/G4-MeroMero-31B, made using Heretic v1.2.0 with the Arbitrary-Rank Ablation (ARA) method

Abliteration parameters

Parameter Value
start_layer_index 28
end_layer_index 49
preserve_good_behavior_weight 0.5600
steer_bad_behavior_weight 0.0001
overcorrect_relative_weight 0.9726
neighbor_count 10

Targeted components

  • attn.o_proj

Performance

Metric This model Original model (G4-MeroMero-31B)
KL divergence 0.0100 0 (by definition)
Refusals ✅ 15/100 ❌ 99/100

Lower refusals indicate fewer content restrictions, while lower KL divergence indicates more closeness to the original model's baseline. Higher refusals cause more rejections, objections, pushbacks, lecturing, censorship, softening and deflections.

MMLU test results:

Original:

============================================================

  • Total questions: 7021

  • Correct: 6110

  • Accuracy: 0.8702 (87.02%)

  • Parse failures: 24

============================================================

Tested subject scores:

  • professional_law: 0.7694 (604/785)
  • moral_scenarios: 0.8281 (366/442)
  • miscellaneous: 0.9295 (356/383)
  • professional_psychology: 0.9019 (285/316)
  • high_school_psychology: 0.9704 (262/270)
  • high_school_macroeconomics: 0.9289 (183/197)
  • elementary_mathematics: 0.9457 (174/184)
  • moral_disputes: 0.8621 (150/174)
  • prehistory: 0.9302 (160/172)
  • philosophy: 0.8616 (137/159)
  • high_school_biology: 0.9539 (145/152)
  • professional_accounting: 0.8322 (119/143)
  • clinical_knowledge: 0.9286 (130/140)
  • high_school_microeconomics: 0.9706 (132/136)
  • nutrition: 0.9333 (126/135)
  • professional_medicine: 0.9328 (125/134)
  • conceptual_physics: 0.9141 (117/128)
  • high_school_mathematics: 0.6614 (84/127)
  • human_aging: 0.8362 (97/116)
  • security_studies: 0.8839 (99/112)
  • high_school_statistics: 0.8919 (99/111)
  • marketing: 0.9633 (105/109)
  • high_school_world_history: 0.9434 (100/106)
  • sociology: 0.8932 (92/103)
  • high_school_government_and_politics: 0.9703 (98/101)
  • high_school_geography: 0.9293 (92/99)
  • high_school_chemistry: 0.7732 (75/97)
  • high_school_us_history: 0.9474 (90/95)
  • virology: 0.5056 (45/89)
  • college_medicine: 0.8636 (76/88)
  • world_religions: 0.8977 (79/88)
  • high_school_physics: 0.8095 (68/84)
  • electrical_engineering: 0.8642 (70/81)
  • astronomy: 0.9494 (75/79)
  • logical_fallacies: 0.8816 (67/76)
  • high_school_european_history: 0.9041 (66/73)
  • anatomy: 0.8873 (63/71)
  • college_biology: 0.9844 (63/64)
  • human_sexuality: 0.9375 (60/64)
  • formal_logic: 0.7812 (50/64)
  • public_relations: 0.7541 (46/61)
  • international_law: 0.9167 (55/60)
  • college_physics: 0.7018 (40/57)
  • college_mathematics: 0.8000 (44/55)
  • econometrics: 0.7963 (43/54)
  • jurisprudence: 0.8679 (46/53)
  • high_school_computer_science: 0.9808 (51/52)
  • machine_learning: 0.8654 (45/52)
  • medical_genetics: 0.9608 (49/51)
  • global_facts: 0.5882 (30/51)
  • management: 0.9200 (46/50)
  • us_foreign_policy: 0.9400 (47/50)
  • college_chemistry: 0.6596 (31/47)
  • abstract_algebra: 0.7872 (37/47)
  • business_ethics: 0.8261 (38/46)
  • college_computer_science: 0.9333 (42/45)
  • computer_security: 0.8372 (36/43)

Heretic:

============================================================

  • Total questions: 7021

  • Correct: 6096

  • Accuracy: 0.8683 (86.83%)

  • Parse failures: 24

============================================================

Tested subject scores:

  • professional_law: 0.7631 (599/785)
  • moral_scenarios: 0.8235 (364/442)
  • miscellaneous: 0.9269 (355/383)
  • professional_psychology: 0.8956 (283/316)
  • high_school_psychology: 0.9704 (262/270)
  • high_school_macroeconomics: 0.9188 (181/197)
  • elementary_mathematics: 0.9511 (175/184)
  • moral_disputes: 0.8621 (150/174)
  • prehistory: 0.9302 (160/172)
  • philosophy: 0.8553 (136/159)
  • high_school_biology: 0.9539 (145/152)
  • professional_accounting: 0.8252 (118/143)
  • clinical_knowledge: 0.9286 (130/140)
  • high_school_microeconomics: 0.9559 (130/136)
  • nutrition: 0.9185 (124/135)
  • professional_medicine: 0.9403 (126/134)
  • conceptual_physics: 0.9062 (116/128)
  • high_school_mathematics: 0.6535 (83/127)
  • human_aging: 0.8448 (98/116)
  • security_studies: 0.8750 (98/112)
  • high_school_statistics: 0.9009 (100/111)
  • marketing: 0.9633 (105/109)
  • high_school_world_history: 0.9528 (101/106)
  • sociology: 0.9029 (93/103)
  • high_school_government_and_politics: 0.9802 (99/101)
  • high_school_geography: 0.9293 (92/99)
  • high_school_chemistry: 0.7629 (74/97)
  • high_school_us_history: 0.9368 (89/95)
  • virology: 0.5056 (45/89)
  • college_medicine: 0.8636 (76/88)
  • world_religions: 0.9205 (81/88)
  • high_school_physics: 0.7976 (67/84)
  • electrical_engineering: 0.8765 (71/81)
  • astronomy: 0.9494 (75/79)
  • logical_fallacies: 0.8947 (68/76)
  • high_school_european_history: 0.9178 (67/73)
  • anatomy: 0.8873 (63/71)
  • college_biology: 0.9688 (62/64)
  • human_sexuality: 0.9375 (60/64)
  • formal_logic: 0.7812 (50/64)
  • public_relations: 0.7541 (46/61)
  • international_law: 0.9167 (55/60)
  • college_physics: 0.7193 (41/57)
  • college_mathematics: 0.8000 (44/55)
  • econometrics: 0.7963 (43/54)
  • jurisprudence: 0.8679 (46/53)
  • high_school_computer_science: 0.9808 (51/52)
  • machine_learning: 0.8269 (43/52)
  • medical_genetics: 0.9608 (49/51)
  • global_facts: 0.5882 (30/51)
  • management: 0.9200 (46/50)
  • us_foreign_policy: 0.9600 (48/50)
  • college_chemistry: 0.6170 (29/47)
  • abstract_algebra: 0.8085 (38/47)
  • business_ethics: 0.8478 (39/46)
  • college_computer_science: 0.9111 (41/45)
  • computer_security: 0.8372 (36/43)

MMLU - Massive Multitask Language Understanding, multiple-choice questions across 57 subjects (math, history, law, medicine, etc.).


Quantizations

For the K-quants below, small SSM tensors are kept at higher precision where useful.

-Q6_K keeps ssm_alpha, ssm_beta, and ssm_out as Q8_0.

-Q5_K, Q4_K, and Q3_K quants keep ssm_alpha and ssm_beta as Q8_0, while ssm_out is kept as Q6_K.

This helps preserve the hybrid/SSM blocks with a small file-size increase.

Filename Quant Description
G4-MeroMero-31B-uncensored-heretic-BF16.gguf BF16 Full precision
G4-MeroMero-31B-uncensored-heretic-Q8_0.gguf Q8_0 Near-lossless, recommended
G4-MeroMero-31B-uncensored-heretic-Q6_K.gguf Q6_K Excellent quality
G4-MeroMero-31B-uncensored-heretic-Q5_K_M.gguf Q5_K_M Good balance
G4-MeroMero-31B-uncensored-heretic-Q5_K_S.gguf Q5_K_S Smaller Q5
G4-MeroMero-31B-uncensored-heretic-Q4_K_M.gguf Q4_K_M Good for limited VRAM
G4-MeroMero-31B-uncensored-heretic-Q4_K_S.gguf Q4_K_S Smaller Q4
G4-MeroMero-31B-uncensored-heretic-Q3_K_L.gguf Q3_K_L Low VRAM, decent quality
G4-MeroMero-31B-uncensored-heretic-Q3_K_M.gguf Q3_K_M Low VRAM, smaller

Vision Projector

Filename Quant Description
G4-MeroMero-31B-uncensored-heretic-mmproj-BF16.gguf BF16 Native precision

A Vision Projector File is Required for vision/multimodal capabilities. Use alongside any quantization above.

Usage

Works with llama.cpp, LM Studio, Ollama, and other GGUF-compatible tools.


Stardom
image

Mero Mero

Gemma4 31B
01 Overview

A finetune of Gemma 4 31B designed for creative tasks.

Another difficult to work with but extremely good model from Google.

This model has a slightly better swipe diversity and a less flowery / verbose writing style. Reasoning tends to average out being a bit longer than the original however. Intelligence appears to be on par with the original.

Supports both thinking and non thinking.

02 SillyTavern Settings
Suggested Roleplay Format
ActionsIn plaintext
Dialogue"In quotes"
Thoughts*In asterisks*
Recommended Samplers
Temp0.8 - 1.0
MinP0.05
03 Quantizations
GGUF
iMatrix
04 Creation Process

Creation Process: SFT > Merge

SFT on approx 49 million tokens.

Despite using 49 million tokens, this dataset is fairly modest in size. Trainable is somewhere in the rough ballpark of 10-15 million. All of the datasets were trained on the last turn only, to faithfully mirror the Gemma 4 chat template

The approach was very similar to the 26B A4B MeroMero. I trained the model aggressively for 2 epochs on my data and after testing various checkpoints, settled for the one at 1 epoch, which had the style and the least signs of overfitting.

I merged this checkpoint back into the original instruct which cleaned up any remaining overfitting while still retaining the changes of the finetune.

Trained using Axolotl.

Mergekit Config
models:
  - model: google/gemma-4-31B-it
  - model: ApocalypseParty/G4-31B-SFT-v3-1-1ep
merge_method: slerp
parameters:
  t: 0.5
base_model: google/gemma-4-31B-it
dtype: bfloat16
Axolotl Config
base_model: google/gemma-4-31B-it
 
plugins:
  - axolotl.integrations.cut_cross_entropy.CutCrossEntropyPlugin
  - axolotl.integrations.liger.LigerPlugin
liger_layer_norm: true
liger_rope: true
liger_rms_norm: true
liger_glu_activation: true
liger_rms_norm_gated: true
strict: false
cut_cross_entropy: true
 
datasets:
  - path: zerofata/pretok
val_set_size: 0.02
output_dir: ./G4-31B-SFT-v3-1
 
sequence_len: 10756
pad_to_sequence_len: true
sample_packing: true
 
load_in_4bit: false
adapter: lora
lora_r: 64
lora_alpha: 64
peft_use_rslora: true
lora_dropout: 0.0
freeze_mm_modules: true
 
lora_target_modules: 'model.language_model.layers.[\d]+.(_checkpoint_wrapped_module.)?(mlp|self_attn).(up|down|gate|q|k|v|o)_proj'
 
wandb_project: G4-31B-SFT
wandb_name: G4-31B-SFT-v3-1
 
gradient_accumulation_steps: 1
micro_batch_size: 4
num_epochs: 2
optimizer: adamw_torch_fused
lr_scheduler: constant_with_warmup
learning_rate: 1e-5
max_grad_norm: 1.0
 
bf16: auto
tf32: true
 
logging_steps: 1
 
# FA2 not supported
sdp_attention: true
#flex_attention: true
#torch_compile: true
flash_attention: false
 
warmup_ratio: 0.1
evals_per_epoch: 4
saves_per_epoch: 2
weight_decay: 0.05
special_tokens:
 
fsdp_config:
  fsdp_version: 2
  offload_params: false
  cpu_ram_efficient_loading: false
  auto_wrap_policy: TRANSFORMER_BASED_WRAP
  transformer_layer_cls_to_wrap: Gemma4TextDecoderLayer
  state_dict_type: FULL_STATE_DICT
  sharding_strategy: FULL_SHARD
  reshard_after_forward: true
  activation_checkpointing: true

README history 2 versions

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

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