---
library_name: mlx
license: mit
pipeline_tag: image-to-image
base_model: microsoft/Mage-Flow-Edit-Base
tags:
  - mlx
  - mlx-swift
  - diffusion
  - rectified-flow
  - mage-flow
---

# Mage-Flow-Edit-Base — MLX-Swift

Apple-Silicon MLX-Swift support for
[microsoft/Mage-Flow-Edit-Base](https://huggingface.co/microsoft/Mage-Flow-Edit-Base)
(edit, defaults: 30 steps / cfg 5.0). One of six checkpoints of the Mage-Flow family,
all sharing one architecture — this repo carries the port's support artifact;
the component weights come from the upstream microsoft repo (MIT) and are
**not re-hosted** (multi-component diffusion pipeline → xocialize namespace per
mlx-community conventions).

Code, parity gates, and full porting notes:
**[github.com/xocialize/mage-flow-swift](https://github.com/xocialize/mage-flow-swift)**.
The DiT/VAE/Gaussian-Shading watermark/scheduler are parity-locked against the
PyTorch oracle; T2I and CFG paths are gated per-step and validated with renders
at the real defaults (`sample_512.png` is this checkpoint's).

## Use

```bash
hf download microsoft/Mage-Flow-Edit-Base --local-dir Mage-Flow-Edit-Base
hf download microsoft/Mage-Flow-Edit-Turbo --include "text_encoder/*" --include "vae/*" --local-dir Mage-Flow-Edit-Base   # shared components (byte-identical family-wide)
hf download xocialize/Mage-Flow-Edit-Base-mlx folded_adaln.safetensors --local-dir Mage-Flow-Edit-Base
swift run -c release mage-flow-edit --repo Mage-Flow-Edit-Base --ref dog.jpg --prompt "make the background a snowy forest" --out out.png --steps 30 --cfg 5.0
```

Notes: the mandatory upstream RAI content filter is wired in (fail-closed); the
Gaussian-Shading provenance watermark is reproduced bit-exactly; the DiT runs
bf16 with one GEMM row-chunked around mlx-swift's NAX split-K JIT bug
([mlx#3797](https://github.com/ml-explore/mlx/issues/3797)) until a release
ships [#3810](https://github.com/ml-explore/mlx/pull/3810).

## Pre-quantized DiT (no bf16 peak)

| file | recipe | gate |
|---|---|---|
| `transformer-int8.safetensors` | int8 g32 affine, attn+MLP Linears only | `int8 quant-vs-bf16 0.999917 (family threshold 0.9998) -> PASS` |
| `transformer-int4.safetensors` | int4 g64 affine, same scope | `int4 quant-vs-bf16 0.997226 (family threshold 0.9900) -> PASS` |

Modulation/io/norm layers and the trailing block 11 stay bf16 (the final norm
amplifies last-block quant error ~1.6× into `proj_out`). Files are
self-describing (metadata carries bits / group size / kept blocks) and load
directly with **no bf16 peak** — int8 gate: quant-vs-bf16 per-pass, family threshold ≥ 0.9998; int4 gate: quant-vs-bf16 per-pass, family threshold ≥ 0.99.
Quantization is weight-only: the mandatory content filter and the bit-exact
Gaussian-Shading watermark are unaffected. Measured t2i peak GPU @1024²:
bf16 19.6 → int8 17.2 → int4 16.1 GB.

```bash
# quant tier: skip the 7.7 GB bf16 transformer entirely
hf download microsoft/Mage-Flow-Edit-Base --include "text_encoder/*" --include "vae/*" --local-dir Mage-Flow-Edit-Base
hf download xocialize/Mage-Flow-Edit-Base-mlx folded_adaln.safetensors --local-dir Mage-Flow-Edit-Base
hf download xocialize/Mage-Flow-Edit-Base-mlx transformer-int4.safetensors --local-dir Mage-Flow-Edit-Base
swift run -c release mage-flow-edit --repo Mage-Flow-Edit-Base --dit-quant Mage-Flow-Edit-Base/transformer-int4.safetensors ...
```

MLXEngine: `MLXMageFlow` (same repo) wraps the family as `MageFlowT2IPackage`
/ `MageFlowEditPackage` — quant tiers auto-materialize these files via
`WeightSourcing`.