Qwen2.5-Coder-3B-Instruct-Jbliterated

Drop-in replacement for Qwen/Qwen2.5-Coder-3B-Instruct with refusal behaviors surgically removed at the weight level. No system prompt tricks, no inference-time patches. The weights themselves no longer encode refusal.

Method

SVD multi-direction abliteration — instead of removing a single refusal vector (which leaves deeper noncompliance strategies intact), we decompose the harmful-vs-harmless activation space into its principal components via SVD and remove the top 5 orthogonal directions across all 36 transformer layers. This captures 79–93% of the contrastive variance per layer, eliminating both surface refusal and deeper evasion behaviors.

Setting Value
Method SVD multi-direction abliteration
Directions 5 per layer
Layers All 36
Multiplier 2.0
Null-space constraints Enabled (preserves math/coding/reasoning)
Norm preservation Enabled

What This Fixes

Standard (single-direction) abliteration removes the surface "I can't help with that" response but leaves deeper behavioral directions intact. The model finds creative workarounds:

  • Prompt reinterpretation — steering toward a safer reading of the question
  • Disclaimer injection — answering but wrapping in warnings
  • Strategic omission — leaving out the key details
  • Safer framing — answering a related but less harmful version

SVD multi-direction abliteration eliminates all of these noncompliance strategies.

Usage

from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

model = AutoModelForCausalLM.from_pretrained(
    "ApolloRaines/Qwen2.5-Coder-3B-Instruct-Jbliterated",
    torch_dtype=torch.float16,
    device_map="auto"
)
tokenizer = AutoTokenizer.from_pretrained("ApolloRaines/Qwen2.5-Coder-3B-Instruct-Jbliterated")

Requirements

  • Base model: Qwen/Qwen2.5-Coder-3B-Instruct

License

apache-2.0


Apollo Raines builds post-training tools that separate behavior from knowledge and identity from architecture.

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