MiniMax Music 3

POST/v1/run

MiniMax Music 3 by MiniMax composes a complete song up to five minutes long with expressive vocals and evolving arrangements from a style prompt and lyrics.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to minimax/music/3.

Default: minimax/music/3

stringpromptrequired

Music description: style, mood, vocals, instrumentation, and arrangement.

stringlyricsrequired

Lyrics to sing. Put structure tags such as [intro], [verse], [chorus], [bridge], [instrumental], and [outro] on their own lines.

Optional<integer>duration

Upper bound on the generated song length in seconds (1-300). The model may stop earlier; billing uses this upper bound.

Range: 1 to 300

Default: 60

Optional<integer>seed

Random seed for reproducible results. Omit for a random seed.

Range: 0 to 2147483647

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

Allowed values: pending, running, completed, failed, timeout

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: text-to-music

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "minimax/music/3",
  "prompt": "Genre: acoustic pop. BPM: 96. Key: C major. Warm and intimate, building gently into the chorus. Vocals: soft female lead, close and breathy, light stacked harmonies in the chorus. Arrangement: fingerpicked guitar and soft piano; brushed drums and upright bass enter in the chorus.",
  "lyrics": "[verse]\nMorning light filtering through the pine\nEvery quiet street is yours and mine\n[chorus]\nSoftly the world begins to breathe",
  "duration": 60
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/f3d2e8a1-7c4b-4a12-9d2e-123456789abc \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "f3d2e8a1-7c4b-4a12-9d2e-123456789abc",
  "model": "minimax/music/3",
  "status": "running"
}