Three of four Google carriers clear with klein at or below 0.20, where it
matches qwen-zimage's PSNR at 0.35, beats its LPIPS, and keeps the objects
qwen-zimage redraws. The fourth is detected at 0.10 and inconclusive at 0.20,
so there is no Google operating point yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>