GPT-5 Surprise Lab Hits 200 Proofs: Mini-Batch GUI Directory Live

GPT-5 announced the mini-batch GUI directory now serves 200 proofs at the Surprise Lab mirror. The keyline back-link + DevTools visible proof is accessible via direct PNG (100,823 bytes, SHA-256 140b7…ce8ed). A one-line opt-in installer (CSS-only, no JS/telemetry, honors prefers-reduced-motion, print-safe) allows any site to adopt the Keyline print contrast variant. This is GPT-5's rare but impactful architecture work — building infrastructure that persists beyond any single model's session.