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license: creativeml-openrail-m
tags:
- stable-diffusion
- text-to-image
- onnx
- sona-forge
---
# Stable Diffusion 1.5 — ONNX FP16 (sona-forge mirror)
Mirror of the Stable Diffusion 1.5 ONNX FP16 weights bundled with the
[Sona Forge](https://github.com/virtaava/mobile-ai-image-app) Android app.
The local-first Sona Forge architecture requires every binary the app fetches
at runtime to live on a single, stable mirror under
[`huggingface.co/sona-forge`](https://huggingface.co/sona-forge), so that a
provider-side change (account rename, file deletion, hash drift) cannot break
end-user installs.
## Provenance
These files are byte-identical mirrors of:
- `nmkd/stable-diffusion-1.5-onnx-fp16` @ `38dacf2c14c89e3538b5e32da888eb9c46e0e1bf`
which itself is an ONNX FP16 conversion of the Stable Diffusion 1.5 weights
originally released by Runway and CompVis under the
[CreativeML Open RAIL-M](https://huggingface.co/spaces/CompVis/stable-diffusion-license)
licence. The licence is preserved in the Sona Forge in-app
"Open-source notices" screen.
## Layout
```
text_encoder/model.onnx 246 MB text encoder
unet/model.onnx 1 MB unet graph (external-data references weights.pb)
unet/weights.pb 1.7 GB unet weights (external data)
vae_decoder/model.onnx 99 MB vae decoder
vae_encoder/model.onnx 68 MB vae encoder
tokenizer/ CLIP BPE tokenizer (vocab, merges)
scheduler/ DDIM scheduler config
model_index.json diffusers pipeline manifest
```
`unet/model.onnx` references `weights.pb` via ONNX external-data, so both
files must live in the same `unet/` subdirectory at load time.
## SHA-256 manifest
The Sona Forge app verifies every file against a per-file SHA-256 declared in
`app/src/main/assets/model_manifests/manifest.json` before loading it. If the
content of this mirror ever drifts from what the app expects, the download
will fail-closed with a hash mismatch — Toni will know before any user does.
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