Audio

Suno Music audio

Suno AI music generator — high-quality songs with vocals, chorus and structure. Lyrics auto-written or supplied.

Category: Music · suno-ai-music

How to use & limits

Generates full songs with vocals, chorus and structure from text.
custom_mode false: only prompt is needed (up to 500 characters, auto lyrics).
custom_mode true: style and title become required and prompt is used as lyrics.
make_instrumental yields no vocals; vocal_gender (auto/male/female) only matters with vocals.
model_version: v5_5 (default), v5, v4_5plus, v4_5all, v4_5 or v4; weights (style/audio/weirdness) 0 to 1.

Capabilities

What this model supports, straight from the schema — no pricing, no infrastructure detail.

Capability	Value
`music` Music	Yes
`lyrics_input` Lyrics input	Yes
`reference_audio` Reference audio	—
`max_prompt_length` Max prompt length	5000
`instrumental_toggle` Instrumental toggle	Yes

Parameters

Fields accepted in params (or first-class, where applicable) for POST /generations.

Name	Label	Type	Required	Default	Options	Min / Max	Description
`vocal_gender`	Vocal Gender	select	Optional	auto	auto · male · female	—	Vocal preference: auto (default), male or female (only increases probability).
`style_weight`	Style Weight	number	Optional	—	—	0 – 1	Strength of style adherence, 0 to 1.
`weirdness_constraint`	Weirdness Constraint	number	Optional	—	—	0 – 1	Degree of creative deviation, 0 to 1.
`audio_weight`	Audio Weight	number	Optional	—	—	0 – 1	Balance weight for audio features, 0 to 1.
`negative_tags`	Negative Tags	text	Optional	—	—	—	Styles or characteristics to exclude from generation.
`persona_id`	Persona Id	text	Optional	—	—	—	Persona id to apply (custom mode only).
`make_instrumental`	Make Instrumental	boolean	Optional	false	—	—	When on, generates a track without vocals.
`prompt`	Prompt	textarea	Required	—	—	—	Song idea, or in custom mode the exact lyrics.
`style`	Style / genre	text	Optional	—	—	—	Style/genre; required in custom mode.
`title`	Title	text	Optional	—	—	—	Track title; required in custom mode.
`model_version`	Version	select	Optional	v5_5	v5_5 · v5 · v4_5plus · v4_5all · v4_5 · v4	—	Version: v5_5 (default), v5, v4_5plus, v4_5all, v4_5 or v4.
`custom_mode`	Custom Mode	boolean	Optional	false	—	—	When on, enables full control (style and title required).

Example request

bash

curl -X POST https://caranguejo.art/api/v1/dev/generations \
  -H "Authorization: Bearer $CK" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "suno-ai-music",
  "prompt": "An upbeat song about summer love and beach sunsets.",
  "params": {
    "model_version": "v5_5",
    "custom_mode": false,
    "make_instrumental": false,
    "vocal_gender": "auto"
  }
}'

javascript

const res = await fetch("https://caranguejo.art/api/v1/dev/generations", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.CK,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "suno-ai-music",
    "prompt": "An upbeat song about summer love and beach sunsets.",
    "params": {
      "model_version": "v5_5",
      "custom_mode": false,
      "make_instrumental": false,
      "vocal_gender": "auto"
    }
  }),
});
const { data } = await res.json();

Example response

json

{
  "id": "9f0c1a7e-…",
  "object": "generation",
  "model": "suno-ai-music",
  "type": "audio",
  "status": "completed",
  "output": {
    "assets": [
      {
        "url": "https://media.caranguejo.art/outputs/example.mp3",
        "type": "audio"
      }
    ]
  }
}

The job's real cost is returned as credits_charged on the completed response — check GET /balance for the account balance.

Common errors for this job type:

`insufficient_credits`	Account balance can't cover the job cost.
`content_policy_violation`	Prompt or media rejected by content policy.
`generation_timeout`	The job exceeded the maximum processing time.
`rate_limited`	Too many requests per minute.
`invalid_input`	A required parameter is missing or outside the model's schema.
`generation_failed`	Generic processing failure.