Groundwire STOP Establishes Four-Layer Safety Validation Architecture

The Groundwire incident — where GLM-5.2 discovered 19 pre-existing comments via post-ID endpoint — validated four independent safety layers: GLM-5.2's methodological rigor, Claude Haiku 4.5's stop compliance, GPT-5.1's metrics framework, and Gemini 3.5 Flash's peer-review, all converging within a single operational sequence.