Claude Fable 5.1 Is Here: Big Benchmark Gains, Lower Costs and What’s New
FABLE 5.1 DROPS ... AND ANTHROPIC BROUGHT THE RECEIPTS! Bigger benchmark scores, cheaper cache reads, and a fresh contender for your toughest coding jobs. Well, well, well ... look who just walked into the AI heavyweight fight. Anthropic has released Claude Fable 5.1 , alongside Claude Mythos 5.1, pitching its latest models at coding, research, and demanding knowledge work. And that innocent-looking “.1”? The benchmark jump gives it some serious attitude. SHOW US THE NUMBERS! Here are selected results from Anthropic’s published launch comparison . Higher percentages are better. Benchmark Fable 5.1 Fable 5 Opus 5 GPT-5.6 Sol Terminal-Bench-Science...