Fable 5.2单次生成MIDI钢琴曲
AI 总结
一名Reddit用户仅用一次提示词让Claude Code中的Fable 5.2创作一首类似肖邦练习曲的快速原创钢琴曲并输出MIDI文件，全程未重跑或修改音符。据称该运行耗时47分07秒，生成262,305个输出token，按API价格计费13.30美元，作品包含A0至C8范围内的759个音符；同一提示词下，Opus 5.5耗时45分钟、成本7.20美元并写出651个音符。
深度见解
这项测试为Fable 5.2通过代码直接生成大型结构化MIDI的能力，以及相对Opus 5.5的运行时间、token和成本表现提供了具体但尚未复现的信号。
| I run the same test on every new Claude model: one prompt in Claude Code asking for an original, fast piano piece in the style of a Chopin étude, delivered as a MIDI file. One run, no rerolls, and I don't touch the notes. Fable 5.2 at max effort: It can't hear anything. It wrote the MIDI with Python directly. For comparison, Opus 5.5 at max on the same prompt took 45 min, cost $7.20 and wrote 651 notes. What's the model and what isn't: every note, the timing, the dynamics and the pedalling are Fable's. The sound is a sampled grand (Salamander Grand Piano). The falling notes and the hands are a visualiser I built to play whatever MIDI it writes. The clip is the second half of the piece. submitted by /u/oh-keh [link] [comments] |