Claude Opus 5.5 im Check: Fable-Niveau zum Opus-Preis? Was die Zahlen sagen
Claude Opus 5.5 arrived on 22 September 2026. Anthropic promises Fable 5.1 level performance at 40 percent lower cost than Opus 5, without a methodology footnote. Independently measured, Opus 5.5 ranks first at Artificial Analysis at max effort. The savings hold at the default effort level medium, while at max it costs practically as much as Opus 5. Plus the max trap, the safety fallback to older models, the system card and GPT-6 Sol on the same day. German audio.
