Anthropic 终于承认了安全机制不透明的问题，做 AI 应用开发或使用 Claude API 的团队，建议关注这个变化——未来降级会有明确提示，误报也会减少，值得跟进。
Anthropic 承认在 Fable 5 模型的安全防护上犯了错误，此前他们默认使用不可见的安全机制，导致用户无法感知模型何时被降级到 Opus 4.8。现在他们承诺未来几天内，当请求被标记并触发降级时，会提供明显的通知，包括在 Claude Code、Claude.ai 或 API 中显示降级原因。这一改变是为了平衡安全与透明度，但短期内可能增加误报。用户可以通过反馈帮助改进分类器。
Anthropic 滑轨，承诺未来几天会在 fable 5 降级到 Opus 4.8 的时候提供明显的通知。
Anthropic 滑轨，承诺未来几天会在 fable 5 降级到 Opus 4.8 的时候提供明显的通知。 ClaudeDevs @ClaudeDevs We’re rolling out changes to make Fable 5’s safeguards for frontier LLM development visible. Starting this week, flagged requests will visibly fall back to Opus 4.8—the same as our safeguards for cyber and bio. You will see this every time it happens. On the API, any flagged requests will return a reason for their refusal (coming to server-side fallback in the next few days). We wanted to deploy Fable 5 to our users quickly and safely. Visible safeguards can be probed, so they have to be robust, which takes time to get right. Invisible safeguards can be targeted more narrowly, allowing us to ship quickly with very few false positives. We went with invisible safeguards for this reason—and that was the wrong tradeoff. You should have visibility into the safeguards we have in place, and why. We’re sorry for not getting the balance right. Making the safeguards visible makes them easier to work around, so keeping them robust to jailbreaks will unfortunately mean more false positives while we improve the classifiers. We're also tuning our bio and cyber classifiers to trigger less often on harmless requests. We know this is frustrating and we’ll do our best to keep this period as short as possible. If you think a request has been mistakenly flagged: run /feedback in Claude Code, click thumbs-down on the fallback in Claude.ai or Cowork, or file the safeguard appeal form for API requests. Your reports help us tune these classifiers and we appreciate your feedback. support.claude.com/en/articles/82… 🔗 View Quoted Tweet 💬 1 🔄 0 ❤️ 2 👀 594 📊 1 ⚡