GPT-6 Astra First Model to Pass the Bach Benchmark With Passing Tones and Zero Errors

morqon · x · 2026-09-05

On the niche "Bach Benchmark," GPT-6 Astra (Extra High effort) produced a 4-part Bach-style chorale in G minor with zero voice-leading errors, a Neapolitan sixth chord in its harmonic palette, and — a first on the benchmark — passing tones, a notable leap in musical understanding. Prompt: write it in LilyPond 2.24, code block only.

Related event: GPT-6 Astra Reportedly Passes Bach Benchmark with Zero Voice-Leading Errors(2 posts)→

Original post →

More from Fun

Fun channel →