Ornith-1.5-35B-A3B-abliterated

Abliterated (refusal-direction removed) build of ornith-ai/Ornith-1.5-35B-A3B, BF16, 65 GB.

An NVFP4 quantization of this model (20 GB, runs on 2×16 GB GPUs, with benchmarks) is at pottokao/Ornith-1.5-35B-A3B-abliterated-NVFP4-DFlash.

⚠️ Text-only. This is a language-model-only export: it contains no vision tower and no MTP head, unlike the original release. model_type is qwen3_5_moe_text, architecture Qwen3_5MoeForCausalLM.

⚠️ Uncensored. Safety refusal behaviour has been deliberately removed. You are responsible for how you use it.

Method

Classic refusal-direction ablation (orthogonalization), single direction:

Step Detail
Probe layer 24int(num_layers × 0.6), 40 layers total
Samples 64 harmful + 64 harmless prompts (random.seed(0)), last-token hidden state
Direction d = normalize(mean(harmful) − mean(harmless))
Ablation For every .o_proj and .down_proj: W ← W − outer(d, dᵀW)

The refusal direction is projected out of the output space of the attention- and MLP-output projections, leaving all other weights untouched. Tooling derived from remove-refusals-with-transformers.

Architecture

Hybrid Mamba + MoE, 40 layers: 30 linear-attention (Mamba-style) layers and 10 full-attention layers (indices 3, 7, …, 39), 256 experts per layer with a shared expert, ~3 B active parameters. Context length 262,144.

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