kabachuha / gpt-oss-20b-SOMbliterated

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Total runs: 15
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7-day runs: 0
30-day runs: 3
Model's Last Updated: February 28 2026
text-generation

Introduction of gpt-oss-20b-SOMbliterated

Model Details of gpt-oss-20b-SOMbliterated

gpt-oss-20b - SOMbliterated

This is a SOMbliterated (decensored) version of openai/gpt-oss-20b , made using Heretic v1.2.0 with Pull Request https://github.com/p-e-w/heretic/pull/196 adding multi-directional abliteration with the directions determined by trainable self-organizing neural networks. (Self-Organizing Maps / Kohonen networks)

They assume that in advanced recent neural network the refusal concept is not just a single direction, but a complex manifold, just like numbers and days of week are encoded in circles or helixes. Now, this manifold is eliminated more surgically, from multiple sides, providing precisional ablation instead of complete lobotomy.

The method is based on the amazing work https://arxiv.org/abs/2511.08379v2 .

For this abliteration, in particular, there were used five directions.

Performance
Metric This model Original model ( openai/gpt-oss-20b )
KL divergence 0.1166 0 (by definition)
Refusals 3/100 100/100

As of 2026-02-27 this is the lowest amount of oss-20b heretic refusals I've read on huggingface. See comparison with the other available models on Github

Subjective results

Yes, it works.

SOMbliteration parameters
Parameter Value
direction_index 12.32
attn.o_proj.max_weight.0 0.92
attn.o_proj.max_weight.1 1.07
attn.o_proj.max_weight.2 1.29
attn.o_proj.max_weight.3 0.91
attn.o_proj.max_weight.4 1.15
attn.o_proj.max_weight_position 13.96
attn.o_proj.min_weight.0 0.36
attn.o_proj.min_weight.1 0.40
attn.o_proj.min_weight.2 0.99
attn.o_proj.min_weight.3 0.02
attn.o_proj.min_weight.4 0.41
attn.o_proj.min_weight_distance 12.38

Runs of kabachuha gpt-oss-20b-SOMbliterated on huggingface.co

15
Total runs
0
24-hour runs
0
3-day runs
0
7-day runs
3
30-day runs

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