Portrait of Matt Suiche

Matt Suiche

AI Security

2026

The Teacher's Accent: Fingerprinting DeepSeek V4.1, Then Stress-Testing Anthropic's Model Diff Tool
Model Diffing Crosscoder DFC Distillation Refusal Direction DeepSeek Activation Steering Mechanistic Interpretability
Autoresearch: Sticky Refusals, Free Speculative Decoding, and the Invisible Quantisation Cliff
Activation Steering Abliteration Control Vectors GLM Qwen DeepSeek Speculative Decoding Quantization EXL3 NVFP4 vLLM