Claude Opus 5.5: Anthropic's New Flagship Matches Fable-Level AI at 40% Lower Cost
Posted on 25th Sep 2026 06:04:37 in Artificial Intelligence, Machine Learning
Tagged as: Anthropic, Claude Opus 5.5, AI Models, Fable 5.1, Frontier AI
Anthropic's Claude Opus 5.5 matches Fable 5.1 on most work while cutting running costs by 40 percent. Here's what the new benchmark scores, the price table, the safety audits, and the same-day OpenAI price cuts mean for businesses building on frontier AI.