Suno V5 Model
Overview
Suno V5 is an audio model for music generation. In StoryFlow it supports both creating new tracks from text and extending an existing audio clip.
Capabilities
- Music generation: create songs, background music, or short cues.
- Extend / remix: continue a track from a reference audio clip.
- Lyrics-driven creation: use descriptive prompts or lyrics as input.
Inputs
- Text (Prompt): description or lyrics (depending on the task).
- Reference Audio: required when
task_typeis notgenerate_music.
Parameters
| Parameter | Type | Default | Allowed | What it does |
|---|---|---|---|---|
task_type | string | generate_music | generate_music, extend_music, add_vocals, upload-cover | Selects the generation workflow. extend_music continues an existing track; add_vocals adds vocals to an instrumental; upload-cover covers an uploaded track into a new style. |
customMode | boolean | false | true, false | Enables advanced controls like title, style, and other tuning knobs. When enabled, keep title and style concise and consistent with your prompt/lyrics. |
instrumental | boolean | false | true, false | Generates instrumental-only output (no vocals). Available for generate_music and upload-cover. |
title | string | - | - | Track title. Only available when customMode=true. |
style | string | - | - | Style description (e.g., genre, instrumentation, vibe). Only available when customMode=true. |
negativeTags | string | - | - | Elements/styles to avoid. Only available when customMode=true. |
vocalGender | string | m | m, f | Vocal gender preference. Only available when customMode=true. |
continueAt | number | - | >= 0 | For extend_music: the start time (seconds) to continue from. Only available when customMode=true. |
styleWeight | number | 0.5 | 0.0 – 1.0 | Controls how strongly the output follows the specified style. Only available for extend_music, add_vocals, upload-cover and when customMode=true. |
weirdnessConstraint | number | 0.5 | 0.0 – 1.0 | Controls creative deviation vs. constraint. Only available for extend_music, add_vocals, upload-cover and when customMode=true. |
audioWeight | number | 0.5 | 0.0 – 1.0 | Balances how much the reference audio influences the result. Only available for extend_music, add_vocals, upload-cover and when customMode=true. |
Tips
- For the best musical direction, specify genre, tempo, instruments, mood, and structure (intro/verse/chorus).
- When extending, trim the reference audio to a clean segment (clear beat and minimal noise).