ACE-Step v1 3.5B
by ACE Studio x StepFun Expected Dec 8, 2026
Coming soonAudioopen-weightsmusicApache-2.0
thairouter/ace-step-v1Overview
Full-song music generation with lyrics in 17 languages; about four minutes of audio in twenty seconds on an A100. Apache-licensed weights, unlike most music models.
Modality
Audio
text → music
Licence
Apache-2.0
open weights
Pricing
TBA
per output, announced at launch
Weights
open
ACE-Step/ACE-Step-v1-3.5B
Expected Dec 8, 2026. Specs are provisional until the model is actually served; pricing is announced at launch.
Benchmarks
Reference scores published by the model's authors, not measured on ThaiRouter. Live numbers appear once the model is serving.
No published benchmark breakdown yet. Scores appear here as they are released.
API
Served through its own OpenAI-style endpoint, not chat completions.
Planned endpoint
https://api.thairouter.ai/v1/audio/musicSame API key, same credit balance, same no-training and no-storage guarantee as every text model. Request shape follows the OpenAI equivalent so existing SDK calls work; per-output pricing is announced at launch.
Not serving yet. Requests with this id return 404 until launch.