# ACE-Step 1.5

Songs with or without vocals from a style caption and lyrics, 10 s to 10 minutes, as 48 kHz stereo. quality turbo (default) or hifi.

Model id: `ace-step-1.5`
Regions: ATL
Hugging Face: [ACE-Step/acestep-v15-xl-turbo](https://huggingface.co/ACE-Step/acestep-v15-xl-turbo)

## Pricing

Send `quality` with a tier or one of its aliases; without it a request gets the default. Each tier renders on its own engine, and a dearer one takes longer.

| Tier | Also accepts | Price |
| --- | --- | --- |
| `turbo` (default) | `auto`, `low`, `fast` | $0.0002 / second |
| `hifi` | `high`, `hd` | $0.0015 / second |

## Limits

Per subscription, on this model:

- Music: 10 requests a minute, 3 at once (jobs pending or rendering)

## Inputs

- text: max prompt 750 characters

## Output: audio

| Parameter | Type | Values | Default |
| --- | --- | --- | --- |
| `task` | string | text2music |  |
| `lyrics` | any |  |  |
| `duration` | integer | 10–600 seconds | 120 |
| `n` | integer | 1–1 | 1 |
| `seed` | integer |  |  |
| `response_format` | string | mp3, wav, flac, opus, aac, pcm | mp3 |
| `sample_rate` | integer | 8000, 16000–48000 | 48000 |
| `bitrate` | integer | 32000, 64000–320000 | 256000 |
| `bpm` | integer | 30–300 |  |
| `key` | any |  |  |
| `time_signature` | string | 2/4, 3/4, 4/4, 6/8 |  |
| `language` | string | ar, az, bg, bn, ca, cs, da, de, el, en, es, fa, fi, fr, he, hi, hr, ht, hu, id, is, it, ja, ko, la, lt, ms, ne, nl, no, pa, pl, pt, ro, ru, sa, sk, sr, sv, sw, ta, te, th, tl, tr, uk, ur, vi, yue, zh, unknown | en |
| `quality` | string | turbo, auto, low, fast, hifi, high, hd |  |

## Endpoints

- [`POST /v1/music`](/docs/reference/create-music.md): Create Music