Configuration Parsing Warning:Config file tokenizer_config.json cannot be fetched (too big)

mlx-community/ACE-Step-1.5-planner-0.6B-bf16

ACE-Step 1.5 planner 0.6B (the lite 5 Hz language model) — MLX, bf16. Converted from ACE-Step/Ace-Step1.5 @ 19671f4 by the converter of xocialize/mlx-ace-step-swift (Tools/convert/convert.py, mlx 0.32.4), a full port of ace-step/ACE-Step-1.5 @ ca1e85f to Swift-MLX.

What is in the bundle

ACE-Step/acestep-5Hz-lm-0.6B @ 148d8ea: the lite planner, a Qwen3-0.6B fine-tune with the same 217 204-token vocabulary and the same two-phase plan (reasoning block, then audio codes), in mlx-lm's model.* layout with the tokenizer files. 310 tensors, bit-equal to the checkpoint. It is the package's planner: .lite0_6B tier (the 24 GB-Mac tier); on the port's 12-song gate it read PER 0.179 against the 1.7B planner's 0.108–0.197 across draws.

Licence

MIT. The Hugging Face repository ACE-Step/Ace-Step1.5 ships no LICENSE file; its model-card tag and README state MIT and the GitHub LICENSE (Copyright (c) 2026 ACEStep) is the controlling text. The Qwen3 base model is Apache-2.0.

The full notice travels with the bundle as NOTICE; LICENSE is the MIT text. Nothing in the weights is modified beyond the layout conversion (key prefix / conv layout / weight-norm folding) — the converter Tools/convert/convert.py in xocialize/mlx-ace-step-swift is gated bit-equal against upstream's own dit_convert.py / vae_convert.py (its MEASUREMENTS.md §V1).

Use

This bundle is one of the four (five, with the lite planner) weight sources of the Swift package xocialize/mlx-ace-step-swift, which runs ACE-Step 1.5 on Apple Silicon through MLX Swift and plugs into MLXEngine on the music capability (caption + lyrics → a 48 kHz stereo song; reference-audio timbre; cover / repaint / extend of a source clip; LRC timestamps). The package's ACEStepConfiguration names these repos and the engine materialises them; the parity gates against the upstream oracle (fp32, TF32 off) are recorded in the package's MEASUREMENTS.md.

let engine = MLXServeEngine()
let id = try await engine.register(ACEStepPackage.registration, configuration: ACEStepConfiguration(quant: .bf16))
try await engine.prepare(.music, package: id)
let song = try await engine.run(MusicRequest(caption: "…", lyrics: "[Verse]\n…", durationSeconds: 120, seed: 7), package: id)