What changed

music-generate now defaults to ACE-Step 1.5. It accepts a plain style prompt or optional lyrics and produces 60, 90, or 120 seconds of audio. Shorter duration requests round up to 60 seconds.

Why

Venice was rejecting prompt-only MiniMax Music 2.6 jobs even when the documented instrumental field was set. ACE-Step supports both prompt-only and lyric-driven generation, so the default now matches the endpoint's advertised behavior.

The price is now $0.08 per generation, reflecting the upstream cost of the supported 60-to-120-second output tiers.