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API Reference
API Reference

Suno Cover-Audio

Use the cover audio endpoint to create an asynchronous Task.

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01

Overview

Use the cover audio endpoint with a supported model. Use the returned Task ID to retrieve its state, or provide callback_url for the deliveries documented below.

Quick start

  1. Create an API key and set it as RUNAPI_API_KEY.
  2. Choose a supported model and send a POST request whose body matches that model's schema.
  3. Store the returned task ID, then poll until a terminal state or handle the callbacks documented below.

Endpoint

POST /api/v1/suno/cover_audio
Base URL
https://runapi.ai
API version
v1
Authentication
Authorization: Bearer YOUR_API_TOKEN
02

Supported models

Open a model page for current pricing, rate limits, and commercial-usage details.

03

Request schema

JSON body

Fields and allowed values depend on the selected model. When supplied, callback_url receives the Task deliveries documented below.

suno-v415 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v4.515 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v4.5-all15 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v4.5-plus15 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v515 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v5.515 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v615 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v6-mini15 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1
suno-v6-wild15 fields
audio_weightnumber
Optional

Audio weight (0-1).

Range: 0 - 1
callback_urlstring
Optional

Webhook URL for async notifications.

lyricsstring
Optional

Exact cover lyrics to sing.

Bound: 5000
modelstring
Required

Model slug.

negative_tagsstring
Optional

Styles to avoid.

persona_idstring
Optional

Persona ID.

persona_typestring
Optional

Persona type.

Allowed values: style, voice
promptstring
Optional

Cover brief for automatic lyrics.

Bound: 5000
stylestring
Optional

Music style.

Bound: 1000
style_weightnumber
Optional

Style adherence weight (0-1).

Range: 0 - 1
titlestring
Optional

Music title.

Bound: 80
upload_urlstring
Required

URL of the audio file to cover.

vocal_genderstring
Optional

Vocal gender.

Allowed values: male, female
vocal_modestring
Required

Vocal generation mode.

Allowed values: auto_lyrics, exact_lyrics, instrumental
weirdness_constraintnumber
Optional

Weirdness constraint (0-1).

Range: 0 - 1

Conditional rules

These requirements apply when all listed conditions match.

  1. When vocal_mode = auto_lyrics
    Required
    prompt
    Not accepted
    lyrics, style, title
  2. When vocal_mode = exact_lyrics
    Required
    lyrics, style, title
    Not accepted
    prompt
  3. When vocal_mode = instrumental
    Required
    style, title
    Not accepted
    prompt, lyrics
04

Create acceptance

HTTP 202

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "processing"
      ],
      "type": "string"
    },
    "task_replayed": {
      "type": "boolean"
    }
  },
  "required": [
    "id",
    "status",
    "billing"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "id": "tsk_reference_demo",
  "status": "processing"
}
05

Polling processing

HTTP 200

GET /api/v1/suno/cover_audio/:id

Response schema
JSON 
{
  "properties": {
    "audios": {
      "items": {
        "properties": {
          "audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "duration": {
            "type": "number"
          },
          "id": {
            "type": "string"
          },
          "image_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "lyrics": {
            "type": "string"
          },
          "model_name": {
            "type": "string"
          },
          "stream_audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "tags": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "title": {
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object",
        "unevaluatedProperties": false
      },
      "type": "array"
    },
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "generation_stage": {
      "enum": [
        "text_generated",
        "first_audio_ready"
      ],
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "processing"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "billing"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "generation_stage": "text_generated",
  "id": "tsk_reference_demo",
  "status": "processing"
}
06

Polling completed

HTTP 200

GET /api/v1/suno/cover_audio/:id

Response schema
JSON 
{
  "properties": {
    "audios": {
      "items": {
        "properties": {
          "audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "duration": {
            "type": "number"
          },
          "id": {
            "type": "string"
          },
          "image_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "lyrics": {
            "type": "string"
          },
          "model_name": {
            "type": "string"
          },
          "stream_audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "tags": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "title": {
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object",
        "unevaluatedProperties": false
      },
      "type": "array"
    },
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "generation_stage": {
      "enum": [
        "text_generated",
        "first_audio_ready",
        "all_audios_ready",
        "failed"
      ],
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "completed"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "audios",
    "billing"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "audios": [
    {
      "audio_url": "https://file.runapi.ai/reference-audio.mp3",
      "id": "audio_reference"
    }
  ],
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "id": "tsk_reference_demo",
  "status": "completed"
}
07

Polling failed

HTTP 200

GET /api/v1/suno/cover_audio/:id

Response schema
JSON 
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "failed"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "error",
    "billing"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "error": "Task processing failed.",
  "id": "tsk_reference_demo",
  "status": "failed"
}
08

Customer callback: processing

HTTP 200

POST callback_url

Response schema
JSON 
{
  "properties": {
    "audios": {
      "items": {
        "properties": {
          "audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "duration": {
            "type": "number"
          },
          "id": {
            "type": "string"
          },
          "image_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "lyrics": {
            "type": "string"
          },
          "model_name": {
            "type": "string"
          },
          "stream_audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "tags": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "title": {
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object",
        "unevaluatedProperties": false
      },
      "type": "array"
    },
    "generation_stage": {
      "enum": [
        "text_generated",
        "first_audio_ready"
      ],
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "processing"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "generation_stage": "text_generated",
  "id": "tsk_reference_demo",
  "status": "processing"
}
09

Customer callback: completed

HTTP 200

POST callback_url

Response schema
JSON 
{
  "properties": {
    "audios": {
      "items": {
        "properties": {
          "audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "duration": {
            "type": "number"
          },
          "id": {
            "type": "string"
          },
          "image_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "lyrics": {
            "type": "string"
          },
          "model_name": {
            "type": "string"
          },
          "stream_audio_url": {
            "type": "string",
            "x-runapi-generated-media": true
          },
          "tags": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "title": {
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object",
        "unevaluatedProperties": false
      },
      "type": "array"
    },
    "generation_stage": {
      "enum": [
        "text_generated",
        "first_audio_ready",
        "all_audios_ready",
        "failed"
      ],
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "completed"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "audios"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "audios": [
    {
      "audio_url": "https://file.runapi.ai/reference-audio.mp3",
      "id": "audio_reference"
    }
  ],
  "id": "tsk_reference_demo",
  "status": "completed"
}
10

Customer callback: failed

HTTP 200

POST callback_url

Response schema
JSON 
{
  "properties": {
    "error": {
      "oneOf": [
        {
          "type": "string"
        },
        {
          "properties": {
            "code": {
              "type": "string"
            },
            "limit_cents": {
              "type": "integer"
            },
            "message": {
              "type": "string"
            },
            "reset_at": {
              "format": "date-time",
              "type": [
                "string",
                "null"
              ]
            },
            "used_cents": {
              "type": "integer"
            },
            "window": {
              "enum": [
                "1h",
                "1d",
                "7d",
                "daily",
                "weekly",
                "monthly",
                "lifetime"
              ],
              "type": "string"
            }
          },
          "required": [
            "code",
            "message"
          ],
          "type": "object",
          "unevaluatedProperties": false
        }
      ]
    },
    "id": {
      "type": "string"
    },
    "status": {
      "enum": [
        "failed"
      ],
      "type": "string"
    }
  },
  "required": [
    "id",
    "status",
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": {
    "code": "generation_failed",
    "message": "Task processing failed."
  },
  "id": "tsk_reference_demo",
  "status": "failed"
}
11

Errors

HTTP 401

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "Authentication required"
}
12

Errors

HTTP 401

GET /api/v1/suno/cover_audio/:id

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "Authentication required"
}
13

Errors

HTTP 400

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "oneOf": [
    {
      "properties": {
        "error": {
          "description": "Human-readable error message.",
          "type": "string"
        }
      },
      "required": [
        "error"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    {
      "properties": {
        "error": {
          "description": "Human-readable validation summary.",
          "type": "string"
        },
        "errors": {
          "additionalProperties": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "description": "Validation messages keyed by public request field, with an array of human-readable strings for each field.",
          "type": "object"
        }
      },
      "required": [
        "error",
        "errors"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  ]
}

Response example

JSON 
{
  "error": "model must be one of: suno-v4, suno-v4.5, suno-v4.5-all, suno-v4.5-plus, suno-v5, suno-v5.5, suno-v6, suno-v6-mini, suno-v6-wild"
}
14

Errors

HTTP 402

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "Insufficient balance"
}
15

Errors

HTTP 429

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "API key credit limit exceeded"
}
16

Errors

HTTP 409

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "The request uses features that are not supported for the selected model"
}
17

Errors

HTTP 429

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "Rate limit reached. Please retry later."
}
18

Errors

HTTP 503

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "Service under maintenance, please try again later"
}
19

Errors

HTTP 504

POST /api/v1/suno/cover_audio

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "The request timed out"
}
20

Errors

HTTP 404

GET /api/v1/suno/cover_audio/:id

Response schema
JSON 
{
  "properties": {
    "error": {
      "description": "Human-readable error message.",
      "type": "string"
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}

Response example

JSON 
{
  "error": "Task with id 'tsk_reference_demo' not found"
}
21

Generated Code Samples

Use cURL directly, or install an SDK for your language. Each sample submits the validated request shown in this reference.

Install

Shell 
pip install runapi-suno
PYTHON 
import os
from runapi.suno import SunoClient

client = SunoClient(api_key=os.environ["RUNAPI_API_KEY"])
task = client.cover_audio.create(
  model="suno-v5",
  upload_url="https://cdn.runapi.ai/public/samples/music.mp3",
  vocal_mode="auto_lyrics",
  prompt="Rework the track as upbeat acoustic pop.",
  persona_id="persona_reference",
  persona_type="style"
)