The XL DiT is the larger ACE-Step 1.5 transformer: 32 layers of 2560 against
turbo's 24 of 2048, with 32 attention heads of 128. Each file is self-contained
the way audio.cpp's other ACE-Step GGUFs are — XL DiT, planner LM, text encoder
and VAE in one file — so neither needs another download.
XL Turbo is guidance-distilled and ignores
guidance_scale
; XL SFT takes the
CFG path. Both were converted from the float32 upstream snapshots with
audiocpp_gguf --type bf16
.
The DiT variant is a load option, so name it explicitly:
audiocpp_cli --task gen --family ace_step --model models/ACE-Step1.5-GGUF/xl-turbo \
--backend cuda --task-route text2music \
--text "warm lo-fi hip hop with a soft rhodes piano" --duration-seconds 60 \
--load-option ace_step.dit_model_path=acestep-v15-xl-turbo --out song.wav
Measured on an RTX 5090 (CUDA), 20 s of audio in 15 s including model load,
either variant.
XL support landed in audio.cpp via
PR #235
; see
docs/models/ace_step.md
there for the full option reference and for rebuilding
this file yourself.
Weights are MIT-licensed by ACE-Step; this repository only redistributes them in
a different container format.
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