# Claude Fable 5回归后遭严重降级：安全路由导致性能暴跌

- 来源：Rohan Paul (@rohanpaul_ai)
- 发布时间：2026-07-03 01:15
- AIHOT 分数：65
- AIHOT 链接：https://aihot.virxact.com/items/cmr3sfppi01mcsl7loieforsp
- 原文链接：https://x.com/rohanpaul_ai/status/2072731021876015358

## AI 摘要

Anthropic的Claude Fable 5（7月1日版）回归后在BridgeBench重测中表现大幅下滑：Debugging从86.2暴跌至25.9，Refactoring从73.6降至38.4，Hallucination从75.9滑落至61.7。原因是新安全护栏并非简单拒绝层，而是将标记请求路由至较弱的Opus 4.8，导致大量任务回退。Rohan Paul评论称这标志着普通人可能再也无法获得升级的前沿模型，如今只有“许可智能”。

## 正文

Feels like an end of era， ordinary people will probably never again get upgraded frontier models.

Fable 5's return shows how safety routing can downgrade a frontier model.

Now we only permissioned intelligence.

The cost of putting a gatekeeper inside intelligence.

To note， that safeguard is not a simple refusal layer； it is a classifier that sends flagged Fable 5 requests to Opus 4.8.

Fable 5 came back， but the old promise did not.

End of an era. ☹️

### 引用推文

> BridgeMind：FABLE 5 CAME BACK NERFED. We re-ran the July 1st version of Claude Fable 5 on BridgeBench. The results are brutal: Debugging: 86.2 → 25.9 Refactoring: 73.6 → 38...