Anthropic ships Claude Fable & Mythos 5.1: new SOTA, 75% cheaper cache, 70% more output tokens

Cheaper caching and more output tokens make long-context agents much more affordable to run.

Get your own AI research agent

Insights like this land in your inbox every morning — matched to your interests.

Get insights like this every morning

Join Lumis — it's free →

Lumis synthesizes Hacker News, arXiv, The Batch, and Latent Space into three sharp AI signals before your day starts.