Arc Gate launches LLM proxy, drift detection

The interesting part is not the Fisher-geometry branding; it is the product shape. A blackbox API proxy with session-level behavior monitoring is a real deployable control surface, but the claims still live or die on calibration and false-positive rates. Blackbox monitoring is the right wedge because most teams cannot instrument model internals in production, and session-level drift is the most credible differentiator because gradual manipulation campaigns are exactly what per-prompt detectors miss. The post is candid that the geometric layer needs deployment-specific calibration, which is both honest and the main risk. The benchmark wins are useful signal, but the real test is whether customers see fewer incidents without blocking benign traffic. The pricing/free-trial motion reads like design-partner land, not mature enterprise rollout.