MiniMax H3 Text Encoders

ComfyUI MiniMax H3 Text Encoders

One loader node for recovered MiniMax-H3 text encoders.

What it adds

One node:

Load MiniMax H3 Text Encoder

Select one package:

• Recovered Qwen3-VL-8B BF16.
• Recovered Qwen3-VL-8B INT8 ConvRot.
• Physical MiniMax-H3 pruned-24 INT8 ConvRot with balanced ARA.
• Physical MiniMax-H3 pruned-24 NVFP4/AWQ with balanced ARA.

The node returns CLIP. Connect it to official MiniMaxH3ImageToVideo.

No adapter node. No ARA node. No cache node. No barrier node.

Install

1. Install this extension in ComfyUI/custom_nodes/.
2. Copy one complete text-encoder package directory into ComfyUI/models/text_encoders/.
3. Restart ComfyUI.
4. Drag example_workflows/minimax_h3_recovered_8b_int8_convrot_t2v.json into the ComfyUI canvas.

This is the frontend/canvas workflow. It includes all visible links, including Load MiniMax H3 Text Encoder → MiniMax H3 Image to Video.clip.

minimax_h3_recovered_8b_int8_convrot_t2v_api.json is a separate API prompt for POST /prompt. Do not drag the _api.json file into the canvas; API prompt JSON has no frontend link layout.

For recovered 8B, copy the directory as a unit. Do not select, rename, or configure the ARA or adapter separately:

ComfyUI/models/text_encoders/
└── recovered_8b/
    ├── minimax_h3_recovered_8b_manifest.json
    ├── qwen3vl_8b_minimax_h3_recovered_int8_convrot.safetensors
    ├── qwen3vl_8b_minimax_h3_recovered_bf16.safetensors
    ├── ara.safetensors
    └── conditioning_adapter.safetensors

The node discovers recovered_8b/ from its manifest. The manifest gives the internal filenames and SHA-256 values for the selected base, ARA, and adapter. The node verifies and loads all three automatically.

Model files

Download complete package directories from SearchingMan/MiniMax-H3-Text-Encoders and place them under ComfyUI/models/text_encoders/.

| Package directory | Loader option | Base format | |---|---|---| | recovered_8b/ | recovered_8b_int8_convrot | INT8 ConvRot | | recovered_8b/ | recovered_8b_bf16 | BF16 | | pruned24_balanced/ | int8_convrot | INT8 ConvRot | | pruned24_balanced/ | nvfp4_awq | NVFP4/AWQ |

Install one package at a time if disk space is limited.

Scope

Text-only MiniMax-H3 T2V. Image, first-frame, last-frame, and reference inputs are not supported by the recovered 8B package.

The recovered 8B node loads the required trained 4096-to-5120 adapter inside the loader. The adapter is not a visible node.

Required official files

Get these from Comfy-Org/MiniMax-H3:

• diffusion_models/minimax_h3_fl2va_pruned_int8_convrot.safetensors
• vae/minimax_h3_video_vae_fp16.safetensors
• vae/minimax_h3_audio_vae_fp32.safetensors

License

Code: MIT.

Weights: Apache-2.0 modified derivatives of Qwen3-VL. Read the model repository LICENSE and NOTICE. The model repository does not contain MiniMax-H3 diffusion-model or VAE weights.