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Udio Model

Unofficial API — sunor is not affiliated with, endorsed by, or officially connected to Udio Inc. This is a third-party integration that provides programmatic access to Udio’s music generation capabilities.
Udio is an AI music generation model that creates songs with vocals or instrumental tracks from a short style description. Compared to Suno, Udio’s strength is rich production polish and natural vocal delivery on shorter prompts.

Available task types

Other operations (extend, remix, voice clone, audio upload) are not yet available for Udio. Use the Suno model for upload, lyrics-only, and concatenation tasks.

Model version

sunor uses Udio’s udio32-v1.5 model. Set automatically — no need to specify it.

Music generation

Quick generate (Udio writes lyrics)

The simplest way to use Udio: a short style description. Udio’s prompt expansion writes lyrics that match.
Key fields:
  • prompt — Short style/mood description. Udio’s GPT layer expands it.
Migrating from Suno? Udio uses prompt for the style description. The Suno-style gpt_description_prompt and make_instrumental fields are not accepted — submissions using them will be rejected with a 400 error. For instrumental output, set lyrics_type: "instrumental" (see below).

With user-supplied lyrics

Pass your own lyrics and tell Udio to use them verbatim.
Key fields:
  • lyrics — Your lyrics, with section markers ([Verse], [Chorus], [Bridge]).
  • lyrics_type — Set to "user" to use your lyrics verbatim.

Instrumental (no vocals)

Key fields:
  • lyrics_type: "instrumental" — No vocal track in the output.

Optional fields


Tips for better results

Keep prompts short

Udio’s GPT layer expands a short style description into a full prompt. Long descriptions can fight that expansion. Aim for 5–15 words.

Use section markers

When supplying your own lyrics, use [Verse], [Chorus], [Bridge], [Outro] to control structure.

Two tracks per call

One Udio task returns ~2 generated songs. Pick the one you like best. Both are billed as one call (5 credits).

Iterate on style

Wrong vibe? Re-submit with adjusted style words rather than tweaking the seed. Udio is sensitive to genre/mood vocabulary.

Differences from Suno