00:00
2026-09-02
rubyonrails.org
artificial-intelligence
Agents on Rails: Claude Fable 5.1 and GLM 5.3 Flash (formerly known as ox-alpha)
Claude Fable 5.1, released yesterday, solved 58 of 63 runs (92%) on the Agents on Rails benchmark, matching Claude Opus 5's accuracy while surpassing it in efficiency, with bills about 50% lower than …