Anthropic Latest Fable 5.2 is a Crippled Model 3 Early and They Have Model 4 Internally
by Brian Wang from NextBigFuture.com on (#79N3C)
Model 4 is an internal, unreleased Anthropic AI model identified in METR's October 2026 assessment. It finished training between September and October 2026 and was the first model in METR's test set to score above 50% on all 15 benchmarks evaluated. The Fable 5.2 Modle is Model 3 Early. Has Anthropic confirmed Model 4 publicly? ...