Claude Opus 5.5 Just Landed
Anthropic's Claude Opus 5.5 launched Sept 22, 2026, matching Fable 5.1 on most benchmarks while running 40% cheaper. It adds new Life Scienc...
Sep 22, 2026
5 min
Anthropic's Claude Opus 5.5 launched Sept 22, 2026, matching Fable 5.1 on most benchmarks while running 40% cheaper. It adds new Life Scienc...