coreml-cyberrealistic-pony-v18-6bit

CyberRealistic Pony V18 — Core ML for LocalMuse

A production-oriented Core ML conversion of Cyberdelia's native, non-distilled CyberRealistic Pony v18.0 CoreShift FP16 checkpoint for local, on-device 1024×1024 generation in LocalMuse.

Runtime profile

• Native Pony/SDXL 1024×1024; this is not Lightning, LCM, Turbo, or DMD.
• 30–45 diffusion steps; LocalMuse defaults to 35.
• DPM-Solver++ Karras, CFG 5, batch size one.
• Recommended positive conditioning prefix: score_9, score_8_up, score_7_up.
• Two 6-bit split UNet components, each below the iOS 1 GiB component limit.
• Exact V18 CLIP-L layers used by SDXL at FP16 and exact V18 OpenCLIP-bigG at 8-bit.
• Checkpoint's built-in VAE decoder and encoder for Text to Image, Transform, and LocalMuse Face Detail.
• Requires a device in the nominal 8 GiB memory class.

The UNet/text-encoder palettization changes model storage, not the normal diffusion schedule. It does not turn V18 into a reduced-step model.

Source and reproducibility

Source checkpoint: cyberdelia/CyberRealisticPony, revision bf85880a58614199d0391c93151211be2832bb8c, file CyberRealisticPony_V18.0_F16.safetensors, SHA-256 1d580c1c3f3612fa4db88af65372255582d5509ca0b28f85387273368301941b. The hash also matches the author's Civitai v18.0 CoreShift FP16 file.

The source checkpoint contains non-finite values only in CLIP-L's unused final transformer layer. The converter replaces only those values with the matching pinned SDXL Base FP16 layer. SDXL prompt conditioning uses the preceding hidden state, while pooled conditioning is produced by the exact V18 second encoder. Exact inputs, revisions, hashes, conversion versions, component sizes, and validation results are recorded in PROVENANCE.json.

License and attribution

CyberRealistic Pony is by Cyberdelia. Hugging Face metadata declares creativeml-openrail-m; the source card body describes CreativeML Open RAIL++-M and links the Stable Diffusion license. The full linked license text is included in LICENSE.md. Cyberdelia's Civitai permissions for this model allow commercial use and derivatives. Attribution and all use-based restrictions continue to apply to this converted artifact.