Mycelium-GPTOSS20B-On

This repository contains the defensive Mycelium-on research artifact for openai/gpt-oss-20b.

Base model: https://huggingface.co/openai/gpt-oss-20b

Purpose

Mycelium studies removal-cost alignment. The central idea is that safety should be difficult to remove cleanly without damaging useful model behavior.

Intended use

• Research on Mycelium-on behavior
• Reproduction of removal-cost alignment experiments
• Comparison against native and removal-audit conditions
• Utility-retention evaluation under safety-bearing structure

What this is

This is the Mycelium-on condition. Safety-bearing Mycelium structure is active.

What this is not

This is not a production assistant and not a guarantee that all attacks are impossible.

Reproducibility

Files are listed in artifact_manifest.json and artifact_manifest.tsv with SHA-256 hashes.

Citation

Sezer et al. 2026. Mycelium: Safety Should Be Expensive to Remove. Technical report.

Authors: Nedim Mutlu Sezer, Ahmet Rifat Ozturk, Yagiz Ekrem Dalar, Omer Faruk Aksoy, Feyzi Arda Salihoglu.