Anthropic releases Claude Fable 5 and Mythos 5 with major gains in coding and science

In three linesAnthropic releases Claude Fable 5 and Mythos 5, outperforming Opus generation in coding and science. Fable 5 completed a Stripe code migration in one day versus two months for a team. Mythos 5 designs drug candidates independently but remains restricted due to offensive cyber capabilities.

Summary generated by Claude — human-verified