Testing Gemini as music understanders: Pro 3.1 solid, Flash models hallucinate sounds

teropa · x · 2026-09-07

teropa tested Gemini models as music understanders. Pro 3.1 reasonably identifies instrumentation, style and vocal presence. Flash 2.5 and 3.8 produce many false positives, imagining synth pads everywhere (2.5 also adds phantom drums). Increasing thinking makes Flash worse, giving more room to confabulate — suggesting the limits lie in perception, possibly audio tokenization.

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