Rohan Paul· @rohanpaul_ai · X·· 2026-07-03AI 评分51
AI 导读
用户 @bridgemindai 披露一次编码会话花费 $321，其中 Fable 5 仅完成 $78（约 25%），而 Opus 4.8 被回退调用完成 $242（约 75%）。原因在于 Fable 5 的新分类器将常规编码提示误判为网络安全风险，导致大部分工作自动路由到更昂贵的 Opus 模型。Anthropic 曾称仅极少数任务会触发 fallback，但该用户实际体验与此不符。
正文 · 原文
This may be an extreme case but it still shows how quickly Fable 5 classifiers can reroute routine coding to Opus.
The session routed 75% of its work to Opus because the new classifiers kept misreading the coding prompts here as a cybersecurity issue.
I just paid $321 for a coding session where Fable 5 refused to do the work. Here is where the work actually went: Fable 5: $78 Opus 4.8: $242 75% of the session got routed to Opus because the new classifiers kept flagging routine coding work as cybersecurity risk. The model I chose did a quarter of the job. The fallback did the rest. Anthropic said a small fraction of tasks would fall back. My receipts say otherwise.在 X 查看被引用的帖子
来源：Rohan Paul · x.com