---
license: other
license_name: minimax-music3-community-license
license_link: LICENSE
pipeline_tag: text-to-audio
library_name: radiance
tags:
- radiance
- rocm
- amd
- rdna4
- bf16
- music-generation
- text-to-music
base_model:
- MiniMaxAI/MiniMax-Music3
---

# MiniMax-Music3, bf16 — radiance container

[MiniMaxAI/MiniMax-Music3](https://huggingface.co/MiniMaxAI/MiniMax-Music3) — songs with vocals from
lyrics and a description — as a single `.rad` container for the
[radiance](https://codeberg.org/StillDeadcode/radiance) inference engine (AMD RDNA4, ROCm).

| | |
|---|---|
| File | `minimax-music3-bf16.rad` — 20.48 GiB |
| Weights | bf16 throughout: the language model and the depth decoder as they ship; the DiT, the condition encoder and the vocoder cast from f32 (their norms, snake alphas, Fourier projection and layer mix stay f32) |
| Audio | 44.1 kHz stereo, 16-bit; up to six minutes |
| Needs | radiance 1.8.0 or newer (MiniMax-Music3 support comes with 1.8.0); one card or two |

## Serve

```sh
# two cards; one card works too (drop --tp 2)
radiance --model minimax-music3-bf16.rad --tp 2 --host 0.0.0.0 --port 8000

curl -s http://localhost:8000/v1/audio/speech -H 'Content-Type: application/json' -d '{
  "input": "[verse]\nMorning light filtering through the pine\n[chorus]\nSoftly the world begins to breathe",
  "instructions": "Genre: acoustic pop. BPM: 96. Warm and intimate. Vocals: soft female lead.",
  "duration": 30, "seed": 7}' -o song.wav
```

The server answers OpenAI's `POST /v1/audio/speech` as SGLang-Omni reads it for music:

- `input` is the lyrics, with the model's section tags such as `[verse]` and `[chorus]`;
  `instructions` describe the song (genre, tempo, key, mood, vocals, instruments). Both are required.
- `duration` (seconds) or `max_new_tokens` (frames, 25 a second) sets the length; without either the
  song runs until the model ends it, usually at the end of the lyrics.
- `seed` makes a song repeatable on the same deployment; `num_inference_steps` (30) and
  `guidance_scale` (1.7) are the denoiser's; `response_format` is `wav` or `pcm`.
- `"stream_format": "audio"` sends the song as it is made, eight seconds at a time;
  `"stream_format": "sse"` sends it as `speech.audio.delta` events.

On two Radeon AI PRO R9700s (gfx1201) a song is made at about the speed it plays: 10 s of audio in
10.8 s with the first audio at 8.5 s, 12 s in 12.7 s. On one card, 4 s in 7.3 s. Up to four songs
are made at once.

Against diffusers' pipeline from the same seed, the language model's hidden state is 1.55% from the
reference's (the reference's own bf16 against its f32: 1.27%), the DiT's velocity 1.3% (1.8%), and
100 frames of audio on one card are 29.0 dB SNR from it (28.7 dB).

## How this file was made

```sh
rad-convert MiniMaxAI/MiniMax-Music3 --recipe minimax-music3-bf16.recipe -o minimax-music3-bf16.rad
```

`MiniMaxAI/MiniMax-Music3` is the downloaded diffusers pipeline directory. The recipe
(`minimax-music3-bf16.recipe` in this repository) names what changes dtype; the vocoder's weight
norm is folded in f32 before its cast:

```
dit.*.ln1.*                          cast dtype=f32
dit.*.ln2.*                          cast dtype=f32
dit.t.fourier                        cast dtype=f32
dit.*                                cast dtype=bf16
cond.mix.*                           cast dtype=f32
cond.*                               cast dtype=bf16
voc.*.alpha                          cast dtype=f32
voc.*                                cast dtype=bf16
```

## License

MiniMax-Music3 is licensed under the MiniMax-Music3 Community License (`LICENSE` in this repository,
Copyright (c) 2026 MiniMax), which includes its Acceptable Use Policy. A commercial product or
service that uses it must display "MiniMax-Music3" on its user interface, and one whose yearly
revenue exceeds 20 million US dollars needs MiniMax's prior written authorization. This container is
a modified copy: the DiT, the condition encoder and the vocoder are cast from f32 to bf16 (the
vocoder's weight norm folded first), and everything is repacked into one `.rad` file.
MiniMax-Music3 was fine-tuned from Qwen3-8B (Apache License 2.0).