Claude Opus 4.8 tests split users: strong at high effort, costly under rate limits

Claude Opus 4.8实测封神！强到离谱，也贵到肉痛

The article says Claude Opus 4.8 scores 63 on an Extra-High senior engineering benchmark, 30 points above Opus 4.7, but drops to 42 at High effort, while $200/month Max users report hitting rate limits within hours on complex agent tasks.

Why it matters: Anthropic/Claude relevance plus concrete test numbers clears HKR-H/K/R: the hook is strength versus cost, K has benchmark and quota details, and R hits agent-budget anxiety. Source is a media test rather than an official release, so this lands at low P1.