Claude Fable 5.1 made me a really nice animated pelican

ID: 0e0a28d0
原文链接: https://simonwillison.net/2026/Sep/1/claude-fable-5-1
作者: Simon Willison
日期: 2026-09-01
抓取时间: 2026-09-02T15:31:00Z
分类: models
来源类型: article
语言: zh
标签: claude, reasoning-effort, cost-curve, svg
质量评分: 3/5

中文导读

Simon 9 月 1 日用 Anthropic 当天发布的 Fable 5.1 跑了同一道 "Generate an SVG of a pelican riding a bicycle" 提示，分别走 5 档推理：low/medium（约 10 美分1.9k token24 秒，无 reasoning 文本）high（13 美分2.6k token30 秒，开始有简短 reasoning）xhigh（36.7k token7 分 51 秒1.83 美元，开始认真规划 SVG 细节）max（65.9k token13 分 54 秒3.30 美元，自带篮子和鱼腿在车架两侧翅膀搭车把上）max 那份 reasoning trace 里能看到模型自己纠结"头盔会不会和鹈鹕冠冲突""通风孔要离头盔边多远""前叉 control point 该往右移一点让它前倾"不是分析，是真的在调几何参数Simon 又把 max 版用 high 档 animate 一遍（1.37 美元）做成视频整组实验把 xhigh 之上的"推理 effort 价格/质量曲线"量化成工程预算可用的数字，比厂商营销页的"new standard for coding"有用

一句话点评

Simon 9 月 1 日用 Anthropic 当天发布的 Fable 5.

English Abstract / Summary

Simon Willison runs the same SVG-of-a-pelican prompt across five reasoning efforts on Anthropic Fable 5.1, recording cost, output token count, latency, and reasoning style. low/medium cost ~$0.10 for 1.9k tokens in 24s with no reasoning trace; high is $0.13 for 2.6k tokens in 30s with brief reasoning; xhigh is 36.7k tokens in 7m51s for $1.83 and starts planning SVG geometry; max is 65.9k tokens in 13m54s for $3.30 with reasoning that visibly adjusts geometric control points and ships a finished scene (basket, fish, wings on handlebars). The piece is the cleanest 2026 quantification of the reasoning-effort price/quality curve.

Obsidian Notes

由 daily-intake-evening 2026-09-02 cron 从当日 Obsidian 摘要（论文流水线 / AK-RSS / ClawFeed / X 书签消化）发现并入库存量阶段。
中文导读与判断均锚定在条目已有摘要、源页面正文、作者、日期与分类信息；未补充源页面之外的实验细节。