Import AI 454: Automating alignment research; safety study of a Chinese model; HiFloat4

Import AI 454 covers HiFloat4, Anthropic automated alignment R&D, and a Chinese model safety study. HiFloat4 reached about 1.0% relative BF16 loss on Ascend NPUs, versus MXFP4's about 1.5%. Anthropic's Claude Opus 4.6 AARs used 800 hours and about $18,000 to raise PGR from a 0.23 human baseline to 0.97.

Why it matters: HKR-H/K/R all pass: Jack Clark links Anthropic AAR, HiFloat4, and Chinese model safety with hard numbers on cost, PGR, and loss. It is strong research commentary, not the original release, so it fits 78–84.