CLAUDE FABLE 5 TOPS BENCHMARKS BUT COSTS DOUBLE
Anthropic released Claude Fable 5, its first Mythos-class model, which achieves record benchmark performance but doubles the price of previous versions. The model also implements stricter safety filters and new data retention policies.
Anthropic has released Claude Fable 5, the first model in its new Mythos class. It leads nearly every benchmark, includi…
Article URL: https://simonwillison.net/2026/Jun/11/fable-is-relentlessly-proactive/ Comments URL: https://news.ycombinat…
Claude Fable 5 tops the Artificial Analysis Intelligence Index with 64.9 points and sets records in five of ten benchmar…
The US government has ordered Anthropic to shut down global access to Fable 5 and Mythos 5, citing alleged jailbreak ris…
As the rest of the country celebrated the USA's first World Cup win and the New York Knicks championship, Anthropic spen…