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feat(minimax-h3): model support — vendored classes, taxonomy, probe, loader #139

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2 changes: 2 additions & 0 deletions invokeai/app/services/model_records/model_records_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
Flux2VariantType,
FluxVariantType,
Krea2VariantType,
MiniMaxH3VariantType,
ModelFormat,
ModelSourceType,
ModelType,
Expand Down Expand Up @@ -142,6 +143,7 @@ def validate_source_url(cls, v: Any) -> Optional[str]:
| WanLoRAVariantType
| Qwen3VariantType
| Krea2VariantType
| MiniMaxH3VariantType
| PiDDecoderVariantType
] = Field(description="The variant of the model.", default=None)
prediction_type: Optional[SchedulerPredictionType] = Field(
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25 changes: 25 additions & 0 deletions invokeai/backend/minimax_h3/__init__.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
"""MiniMax H3 (Hailuo 3.0) model classes, vendored from the in-progress diffusers integration.

Vendored from huggingface/diffusers PR #14355 ("Add MiniMax-H3") at commit
abc5e9bf71fd38f53cd471bc3acaa84bc5ecbfdc (branch `minimax-h3`), which is not yet
in any tagged diffusers release. The only local changes are rewriting the
package-relative imports to absolute `diffusers.*` imports (all referenced
symbols exist in the pinned diffusers==0.39.0) and ruff import sorting. Keep
these files otherwise
byte-identical to upstream: when a diffusers release ships the H3 classes,
delete this vendoring and import them from diffusers instead.

Apache-2.0, copyright The HuggingFace Team / MiniMax (see file headers).
"""

from invokeai.backend.minimax_h3.autoencoder_kl_minimax_h3 import AutoencoderKLMiniMaxH3
from invokeai.backend.minimax_h3.autoencoder_kl_minimax_h3_audio import AutoencoderKLMiniMaxH3Audio
from invokeai.backend.minimax_h3.scheduling_minimax_h3 import MiniMaxH3Scheduler
from invokeai.backend.minimax_h3.transformer_minimax_h3 import MiniMaxH3Transformer3DModel

__all__ = [
"AutoencoderKLMiniMaxH3",
"AutoencoderKLMiniMaxH3Audio",
"MiniMaxH3Scheduler",
"MiniMaxH3Transformer3DModel",
]
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