Nathan Lambert· @natolambert · X·· 2026-06-10AI 评分63
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Claude Fable 5 在 APEX-SWE 软件工程评测中取得 65.5% Pass@1 总体成绩，较 Claude Opus 4.8 高约 18 个百分点。两个子类别中，Integration 为 61.3%，Observability 高达 69.7%，后者比 Opus 4.8 领先 26 个百分点。Fable 5 是首个在 Observability 类别突破 50% 的模型，也是唯一在该项上得分高于 Integration 的模型（其他模型均相反）。Observability 此前一直是所有模型的瓶颈，Fable 5 首次打破这一局面。主推文认为，虽然模型 token 价格不菲，但对大量企业而言物有所值。
正文 · 原文
A crazy jump. The price of the tokens will be worth it to a vast number of enterprises.
Claude Fable 5 takes #1 on APEX-SWE: 65.5% Pass@1 overall. It scores ~18pp higher than Opus 4.8. We tested @claudeai Fable 5 on APEX-SWE which measures whether AI models can do real software engineering work. Fable 5 tops our two APEX-SWE categories: - Integration: 61.3% - Observability: 69.7% The standout is Observability at 69.7%, 26pp ahead of Claude Opus 4.8. It is the first model to clear 50% on the category, and the only one that scores higher on Observability than on Integration. Every other model shows the reverse. Observability has been the bottleneck for every model we have measured. Fable 5 is the first to break it. Congrats to the @AnthropicAI team.在 X 查看被引用的帖子
来源：Nathan Lambert · x.com