Fable 5.1 reopens the debate on who leads the AI race: US or China

Anthropic released Fable 5.1, its most advanced model for programming and reasoning. Benchmark tests gave it 66 points on Artificial Analysis's Intelligence Index, ahead of Opus 5 and GPT‑5 models. The launch reignites the discussion on whether the United States or China leads the AI race.

Summary written by Kernelia from the original article by Xataka. The story and its rights belong to its author.