Six weeks after Opus 4.7, Anthropic shipped Claude Opus 4.8. The benchmarks are up, the safety scores are up, and the price hasn't budged from $5 per million input tokens and $25 per million output. So we ran it through the same battery of tests we throw at every frontier model—creative writing, coding, math, logic, narrative reasoning, and long-context recall—and compared it head-to-head with its own predecessor and the Chinese models that keep undercutting it.