Claude Fable 5.1

All 2 articles covering Claude Fable 5.1.

Deep Dive6 min read

Claude Fable 5.1 Deep Dive: 52.6% Terminal-Bench-Science and the Economics of 75% Cheaper Cache Reads

Anthropic's Claude Fable 5.1 delivers a 52.6% breakthrough on Terminal-Bench-Science alongside a 75% price cut to prompt cache reads, reshaping agent economics for long-context workflows.

Sep 3, 2026

News Brief3 min read

Anthropic Releases Claude Fable 5.1: 52.6% Terminal-Bench-Science and 75% Cache Read Price Cut

Anthropic has launched Claude Fable 5.1, featuring a 1M-token context window, a 52.6% score on Terminal-Bench-Science, and a 75% reduction in prompt cache read costs to $0.25 per million tokens.

Sep 2, 2026