Musk Called Grok 4.5 "Opus-Class." Independent Testers Ranked It Fourth. Both Might Be Right
xAI's new model launched with a big claim and a bigger price cut. The independent benchmarks that landed within 24 hours tell a more interesting story than either the hype or the dunk: genuinely strong, dramatically cheaper — and hallucinating more confidently than the version before it. A case study in reading past launch-day marketing.