If Claude Fable stops helping you, you’ll never know (opens in new tab)

Jonathon Ready highlights one of the more eyebrow-raising details from the for Fable 5 and Mythos 5. Here's a longer excerpt, highlights mine: In light of the ability of recent models to , we’ve implemented new interventions that limit Claude’s effectiveness for requests targeting frontier LLM development (for example, on building pretraining pipelines, distributed training infrastructure, or ML accelerator design). Using Claude to develop competing models already violates our , but enforcing...