#cache reads

Anthropic Releases Claude Fable 5.1 and Claude Mythos 5.1: 52.6% on Terminal-Bench-Science and 75% Cheaper Cache Reads

Anthropic has released Claude Fable 5.1 and Claude Mythos 5.1, with Fable 5.1 scoring 52.6% on Terminal-Bench-Science and offering 75% cheaper cache reads. The updates also include breaking API changes and expanded cloud availability.