GPT-6 Astra Reportedly Passes Bach Benchmark with Zero Voice-Leading Errors

A reportedly unverified test by @aug5thmusic claims GPT-6 Astra achieved the best-ever Bach Benchmark score, producing four-part chorales with zero voice-leading errors and advanced harmony including Neapolitan sixths, making it the first model capable of writing passing tones.

2026-09-05 ~ 2026-09-05 · 2 related posts

• GPT-6 Astra First Model to Pass the Bach Benchmark With Passing Tones and Zero Errors — morqon · 2026-09-05
• GPT-6 Astra reportedly aces Bach chorale benchmark, first model to write passing tones — yacineMTB · 2026-09-05