mlx-community/HiDream-O1-Image-Dev-mlx-q6

HiDream-O1-Image-Dev — MLX Q6 (Apple Silicon)

Ported by Mrbizarro · MIT licensed · published to mlx-community

🎛️ Run it one-click in Phosphene

Phosphene is a free local generative-video panel for Apple Silicon. HiDream is wired into its Image Studio. Install Pinokio, then in Pinokio install Phosphene. Note: Phosphene's HiDream integration uses BF16 by default since edit requires BF16 — this Q6 repo is for text-to-image-only workflows on RAM-constrained machines.

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A 6-bit quantized MLX port of HiDream-ai/HiDream-O1-Image-Dev.

⚠ Q6 does NOT support edit / multi-ref. Per-group dequantization noise compounds against reference-image features in attention and produces degenerate output. For edit / multi-reference workflows use the BF16 sibling repo instead.

Sibling repos

• 🟢 BF16 (full precision) — 17.5 GB, ~16 GB RAM, clean across all dimensions. Use this when in doubt.
• 🟡 Q6 (this repo) — 8 GB, ~8.5 GB RAM, fast. Best at square 2048×2048 or 1024×1024. Visible 32-pixel patch grid in flat regions at non-square dims.
• 🟡 Q8 — 10 GB, ~11.5 GB RAM, same artifact behaviour as Q6 at non-square dims.

When to use Q6

• ✅ Square 1024×1024 or 2048×2048 — clean output, half the time of BF16
• ✅ RAM-constrained — fits 16 GB Macs alongside other apps
• ❌ Non-square dims (1440×2560, 3104×1312, etc) — visible 32-pixel patch grid in skies, walls, water → use BF16

What's in this repo

• model.safetensors — Q6 quantized backbone (8 GB)
• extras/custom_heads.safetensors — diffusion-side heads (75 MB, BF16)
• config.json (with quantization: {bits: 6, group_size: 64} so mlx-vlm wraps Linear → QuantizedLinear correctly)
• Tokenizer + processor configs

Code

The inference scripts are not in this repo — they live in the BF16 sibling repo under scripts/hidream_o1/. Clone that for code, this for weights only.

Quick start

# Get the code
hf download mlx-community/HiDream-O1-Image-Dev-mlx-bf16 --local-dir hidream-o1-mlx \
  --include "scripts/*" --include "*.md" --include "*.txt" --include "*.gitattributes"
cd hidream-o1-mlx
uv venv --python 3.11 && uv pip install -r requirements.txt

# Get the Q6 weights
hf download mlx-community/HiDream-O1-Image-Dev-mlx-q6 --local-dir mlx_models/hidream-o1-dev-q6

# Run (square dims only for clean output)
.venv/bin/python scripts/hidream_o1/generate_hidream_o1_mlx.py \
  --model-path mlx_models/hidream-o1-dev-q6 \
  --prompt "your prompt here" \
  --width 2048 --height 2048 \
  --output out.png

Performance

Resolution	Per step	Total (28 steps)	Peak RAM	Quality
1024×1024	1.30 s	36 s	8.5 GB	✅ clean
2048×2048	5.51 s	154 s	9 GB	✅ clean
1440×2560 (non-square)	4.50 s	127 s	8.5 GB	⚠ patch grid visible

License

MIT — see the BF16 repo for the full LICENSE file and acknowledgements.