Anthropic dropped Claude Fable 5 yesterday. First Mythos-class model available to the public. Same tier that found and exploited vulnerabilities in every major operating system and browser earlier this year. 80.3% on SWE-Bench Pro, 29.3 on FrontierCode Diamond, beat Pokémon FireRed using nothing but raw screenshots. Most developers won’t need it. The advantage is conditional Anthropic’s own words: The longer and more complex the task, the larger Fable 5’s lead over our other models.
No comments yet. Log in to reply on the Fediverse. Comments will appear here.