deAPI runs AceStep, the AI music model behind Rapper. Text to music through one API - plus image, video, voice and transcription. $5 free credit on signup.
AceStep 1.5 in three variants: Turbo (3.5B, fast drafts), XL Turbo (~10B, higher fidelity), and Base (3.5B, adjustable steps and guidance for full control). All three accept the same prompt format.
Every track on Rapper is generated through deAPI's AceStep endpoint. The API and models you'd use are identical.
Duration (30 seconds to 5 minutes), BPM, musical key, time signature, and full lyrics with section markers like [verse], [chorus], [bridge]. Leave lyrics empty for instrumentals.
$5 in free credit on signup, no credit card. After that you pay per generation. Idle months cost nothing.
Sign up at deapi.ai, copy your API key from the dashboard, and send your first POST request. The docs cover every parameter for the music endpoint and all other modalities.