Suno v4.5 API
Suno v4.5 is OmniaKey's first live music route: describe a style and let the model write the words, or send your own lyrics with a style tag, and one finished song comes back through the same asynchronous media API as images and video.
- Model ID
- suno-v4.5
- Provider
- Suno
- Modality
- AI Audio
- Per successful call
- $0.30
- Last verified
- 2026-09-15
Playground
Use this model with your OmniaKey account.
An idea you can hear
Suno v4.5
An idea you can hear
Start with your own idea or make this prompt yours.
01
Where it fits
Use Suno v4.5 for demos, background tracks, jingles and lyric drafts at $0.30 per generation. Each generation returns one finished song and bills once whether or not you send lyrics.
02
What it does
Text to music
suno-v4.5
Turn a style description and optional lyrics into a finished song.
03
Call it
Media models run asynchronously. Create a task, poll it until it finishes, then download the signed asset URL.
# 1. Create the job. 202 Accepted; the body carries the task id,
# the pre-charged price, and a poll_url. Reuse one Idempotency-Key
# across retries so a timeout never starts a second paid job.
curl --fail-with-body https://api.omniakey.com/v1/media/tasks \
-H "Authorization: Bearer $OMNIAKEY_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: suno-v4.5-001" \
-d '{
"model": "suno-v4.5",
"type": "audio",
"operation": "generate",
"input": {"prompt": "a paper boat on a quiet lake at sunset"},
"parameters": {"title": "Paper Boats"}
}'
# 2. Description mode sends input.prompt alone and lets the model write
# the words. Custom lyrics mode adds input.lyrics plus the style:
# {"prompt": "indie folk", "lyrics": "[Verse] ..."} —
# parameters.style (or .tags) overrides the style, and
# parameters.instrumental: true drops the vocal entirely.
# 3. Poll GET /v1/media/tasks/{id} until status is
# succeeded | failed | canceled. Progress carries percent and stage.
curl --fail-with-body https://api.omniakey.com/v1/media/tasks/TASK_ID \
-H "Authorization: Bearer $OMNIAKEY_API_KEY"
# 4. Download assets[0].url before expires_at, or poll again for a
# fresh signed URL. Failed and canceled jobs are refunded.
curl -sS -o out.mp3 "$(jq -r '.assets[0].url' result.json)"04
Pricing
Music jobs are billed per successful generation, not per token. Failed or canceled jobs are refunded automatically.
$0.30per call
Frequently asked questions
How do I call Suno v4.5 on OmniaKey?
POST to /v1/media/tasks with the model id, type "audio", and operation "generate". Send input.prompt for description mode, or add input.lyrics to sing your own words. Reuse one Idempotency-Key across retries so a timeout never starts a second paid job.
What does Suno v4.5 cost?
Suno v4.5 bills $0.30 per call per successful generation. Creation pre-charges that amount from your prepaid balance, and failed or canceled jobs are refunded automatically.
Why does the API return a task id instead of the song?
Music renders take from about thirty seconds to a few minutes, so OmniaKey runs every audio route through one asynchronous lifecycle. Poll GET /v1/media/tasks/{id} until the status is succeeded, then read the signed asset URL.