Claude Fable 5.1 语言比前代更少“承重”
原标题：Claude Fable 5.1's language is less "load-bearing" than its predecessor's
AI 摘要
Arena.ai 分析了 Anthropic 的 Claude 从 Fable 5 到 Fable 5.1 在数万条高推理 Text Arena 输出中的写作变化。Fable 5.1 减少了附和式开场、破折号以及“honestly”“frankly”等措辞，但回答变得更长，中位长度从 319 词升至 414 词，仍比 Opus 5 的 525 词短 21%。同时“load-bearing”等套话、模糊限定词、赞美与认可、长实词和抽象名词均有所下降。
正文节选
Claude Fable 5.1's language is less "load-bearing" than its predecessor's Arena.ai analyzed how Anthropic's Claude's writing changed from Fable 5 to Fable 5.1 across tens of thousands of high-reasoning Text Arena outputs. Fable 5.1 uses fewer agreement openers, fewer em dashes, and less wording like "honestly" and "frankly," while its answers have grown longer. Median response length rises 30 percent from 319 to 414 words but remains 21 percent shorter than Opus 5's 525 words. Stock phrases such