Chubby♨️@kimmonismus · XAnthropic 宣布 Fable 5 于 7 月 1 日起全球恢复上线，Mythos 5 仅限获批美国组织使用。新安全分类器可阻断特定越狱技术超过 99% 案例，被拦截的 Fable 5 请求回退至 Opus 4.8。Anthropic 承认这会增加正常编码调试的误报。7 月 7 日前 Fable 5 可免费使用最多 50% 周配额，之后需用量积分。Anthropic 正与 Amazon、Microsoft、Google 等 Glasswing 伙伴起草 AI 越狱严重性评估共识框架，并扩大与美国政府在模型测试和防护方面的合作。
Fable 5 is back， globally！
Fable 5 returns globally on July 1， while Mythos 5 is only restored for approved US organizations.
A new safety classifier that Anthropic says blocks the specific reported technique in over 99% of cases， with blocked Fable 5 requests routed to Opus 4.8.
Anthropic admits the tradeoff is more false positives for normal coding and debugging.
Fable 5 will be included for up to 50% of weekly usage limits through July 7， after which it will be available via usage credits.