Anthropic 的 Fable 5 模型于 7 月 1 日全球重新上线,Mythos 5 仅限美国获批组织使用。新的安全分类器可阻止超 99% 的特定报告技术,但代价是正常编码和调试中误报增加,被拦截的请求将转至 Opus 4.8。截至 7 月 7 日,Fable 5 包含在每周使用限额的 50% 内,之后需消耗使用积分。作者认为严格限制下更难有效使用 Fable 5,且更多科学问题(生物学、化学)也会被拦截。
Fable 5 is back, but with a major caveat.
Coding is being handled even more restrictively and routed even more heavily to Opus 4.8. Specifically, it says: "The new classifier also comes at the cost of flagging benign requests more often during routine coding and debugging tasks."
As a result, I do not just assume that it will become even harder to use Fable 5 effectively; I actually think that significantly more scientific questions, including those about biology and chemistry, will be blocked as well.
So it is a mixed re-release, but we will see.