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LICENSE

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+MiniMax H3 COMMUNITY LICENSE AGREEMENT
+MiniMax H3 release date/License date: August 2, 2026.
+The scope of this License Agreement (this “Agreement”) is expressly limited to the “Applicable Territory” as defined below.
+By clicking to accept, or by using, reproducing, modifying, distributing, running, or displaying any portion or element of the MiniMax H3 Works (including through any Hosted Services) in any manner, you acknowledge and accept the terms of this Agreement, and this Agreement shall take immediate effect upon the occurrence of such act.
+I.  Definitions
+1. “Acceptable Use Policy” means the policy published by MiniMax in Exhibit A.
+2. “Agreement” means the terms and conditions set forth herein that govern the use, reproduction, distribution, modification, running, and display of the MiniMax H3 Works or any portion or element thereof.
+3. “Applicable Territory” means worldwide, excluding the Excluded Territories.
+4. “Documentation” means the specifications, manuals, and documentation concerning MiniMax H3 that are publicly released by MiniMax.
+5. “Excluded Territories” means the European Union, the United Kingdom, the Republic of Korea and the United States of America.  
+6. “MiniMax H3” means the video generation model, together with its software and algorithms, including trained model weights, parameters (including optimizer states), machine-learning model code, inference-supporting code, and other elements thereof made publicly available by Us, as released at https://huggingface.co/MiniMaxAI/MiniMax-H3.
+7. “MiniMax H3 Works” means (i) the Materials, (ii) the Model Derivatives, and (iii) all derivatives thereof.
+8. “Hosted Services” means hosted services provided via application programming interfaces (APIs), web access, or any other electronic or remote means.
+9. “Licensee,” “you,” or “your” means the natural or legal person exercising rights and/or using the MiniMax H3 Works for any purpose in any field of use under this Agreement.
+10. “Materials” means, collectively, MiniMax H3 and the Documentation (and any portion thereof), in each case as made available by MiniMax under this Agreement and proprietary to MiniMax.
+11. “Model Derivatives” means all of the following: (i) any modification of MiniMax H3 or any Model Derivative thereof; (ii) any work based on MiniMax H3 or any Model Derivative thereof; or (iii) any other machine learning model created by transferring the patterns of the weights, parameters, operational patterns, or Outputs of MiniMax H3 or any Model Derivative thereof to another model, such that the latter model exhibits behavior similar to MiniMax H3 or its Model Derivatives, including by distillation methods, methods using intermediate data representations, or methods based on training using synthetic-data Outputs generated by MiniMax H3 or its Model Derivatives. For the avoidance of doubt, Outputs are not deemed Model Derivatives.
+12. “Output” means any result of operating or otherwise using MiniMax H3 or any Model Derivatives (including through Hosted Services).
+13. “Third Party” means any natural or legal person that is not under common control with us or with you.
+14. “Including” means “including but not limited to.”
+15. “We,” “Us”  or  “MiniMax” means Nanonoble Pte. Ltd..
+II.  Grant of Rights
+Solely within the Applicable Territory, we grant you a non-exclusive, non-transferable, royalty-free, limited license to use, reproduce, distribute, create derivative works (including Model Derivatives), and modify the Materials in accordance with the terms of this Agreement and the Acceptable Use Policy, based on the intellectual property and other rights owned by MiniMax that are embodied in or used by the Materials. You shall not violate (or encourage or permit any person to violate) any term of this Agreement or the Acceptable Use Policy.
+We will continuously evaluate the applicable laws, regulations and compliance requirements for the Excluded Territories. In the meantime, should any person in such Excluded Territories be interested in deploying our models, you are welcome to contact us about obtaining a license, which will be granted based on robust controls and guardrails for purposes of complying with the laws, regulations and compliance requirements of the Excluded Territories.
+III.  Distribution and Redistribution
+Subject to and conditioned on your continuing compliance with this Agreement, including its territorial restrictions and the Acceptable Use Policy, and solely within the Applicable Territory, you may distribute or make available the MiniMax H3 Works to Third Parties within the Applicable Territory; provided, that all of the following conditions are met:
+1. You must provide a copy of this Agreement to all such Third Parties who receive the MiniMax H3 Works or use your products or services related thereto;
+2. You must cause any modified files to carry prominent notices stating that you have modified such files;
+3. You are encouraged to:
+  a. display a notice on any product or service developed using MiniMax H3 indicating that the product or service is “Powered by MiniMax H3”; 
+  b. add an AI-generation identifier to files produced using generative AI models including MiniMax H3; and
+  c. publish at least one technical blog post or a public statement describing your experience using MiniMax H3 Works;
+4. All distributions to Third Parties (other than through Hosted Services) must be accompanied by a “NOTICE” text file containing the following notice:
+  “MiniMax H3 is licensed under the MiniMax H3 Community License Agreement, Copyright © 2026 MiniMax. All Rights Reserved.”
+You may add your own copyright notices on your modifications; except as provided in this Section and in Section V, however, you may not impose additional or different terms and conditions on the use, reproduction, or distribution of your modifications or of any aggregate Model Derivatives, and your use, reproduction, modification, distribution, running, and display of the work must otherwise comply with the terms and conditions of this Agreement (including the provisions concerning the Applicable Territory). If you receive the MiniMax H3 Works from a Licensee as part of an integrated end-user product, the provisions of Section III of this Agreement do not apply to you, but Section V and Exhibit A remain applicable.
+IV.  Additional Commercial Terms
+1. You shall obtain a separate, prior written authorization from MiniMax by contacting api@minimax.io with the subject line “MiniMax H3 licensing - authorization request”, if your commercial products and services generate more than 20 million US dollars (or equivalent in other currencies) in yearly revenue.
+2. You shall prominently display “MiniMax H3”on the user interface of commercial product or service that uses MiniMax H3 or MiniMax H3 Works.
+V. Use Restrictions
+1. Your use of the MiniMax H3 Works must comply with applicable laws and regulations (including trade-compliance laws and regulations) and must comply with the Acceptable Use Policy for the MiniMax H3 Works, which is incorporated into this Agreement by reference. 
+2. Before providing access to the MiniMax H3 Works or any product, service, or Hosted Service incorporating them, you must bind each recipient or user to enforceable terms at least as protective as the use restrictions in this Section V and Exhibit A, and you must notify each recipient or user that those restrictions apply.
+3. You may not use the MiniMax H3 Works or any of their Outputs or results to improve any other artificial intelligence model (other than MiniMax H3 or its Model Derivatives).
+4. You may not use, reproduce, modify, distribute, or display the MiniMax H3 Works or any of their Outputs or results outside the Applicable Territory. Any such use outside the Applicable Territory is not authorized by this Agreement.
+5. If you provide or make available to any Third Party a product, service, or Hosted Service that permits the generation of Outputs using MiniMax H3 or any Model Derivative, you must, before making that product or service available and throughout its operation, implement, maintain, test, and periodically review reasonable and proportionate technical and organizational safeguards designed to prevent and mitigate access, uses, and Outputs that violate this Section V or Exhibit A, including uses or Outputs that infringe, misappropriate, or otherwise violate any Third Party’s intellectual-property or other rights. You must not knowingly disable, materially weaken, or permit the circumvention of those safeguards. You must maintain a reasonably accessible mechanism for reporting suspected violations. Upon receiving a good-faith report or otherwise obtaining actual knowledge of a violation, you must promptly investigate and take reasonable steps within your control to stop or mitigate the violation, including removing or disabling access to offending content or services and suspending or terminating repeat violators where appropriate. You are responsible for implementing and enforcing these requirements with respect to your products, services, systems, users, and downstream recipients.
+VI.  Intellectual Property
+1. Subject to MiniMax’s rights in the MiniMax H3 Works (and the intellectual property therein), and to your compliance with the terms and conditions of this Agreement, as between you and MiniMax, you will own the derivative works and modifications of the Materials that you have created or had created, as well as any Model Derivatives.
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+4. MiniMax claims no rights over the Outputs you generate. You and your users are entirely responsible for the Outputs and any subsequent use thereof.
+VII.  Disclaimers and Limitations of Liability
+1. We have no obligation to support, update, provide training for, or develop any further version of the MiniMax H3 Works, or to grant any license with respect thereto.
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+VIII.  Term and Termination
+1. This Agreement is effective from the moment you accept this Agreement or begin accessing the Materials, and, subject to your compliance with its terms and conditions, will remain in effect until terminated as provided herein.
+2. If you breach any term or condition of this Agreement, we have the right to terminate this Agreement. Upon termination, you must immediately cease accessing, using, and distributing the MiniMax H3 Works; delete or destroy all copies within your possession or control; and notify each downstream recipient that your authorization has ended. The obligations in the preceding sentence and Sections VI.1, VI.3, VII, and IX survive termination.
+IX.  Governing Law and Jurisdiction
+1. This Agreement, and any dispute arising out of or related to this Agreement, shall be governed by the laws of the Hong Kong Special Administrative Region of the People’s Republic of China, without regard to its conflict-of-laws rules. The United Nations Convention on Contracts for the International Sale of Goods does not apply to this Agreement.
+2. Any dispute arising out of or related to this Agreement shall be subject to the exclusive jurisdiction of the courts of the Hong Kong Special Administrative Region of the People’s Republic of China with competent jurisdiction. Both MiniMax and the Licensee hereby consent to the exclusive jurisdiction of such courts for any such dispute.
+Additional Note: Please note that the encoder of MiniMax H3 uses Qwen3-VL-32B, which is licensed under Apache 2.0 License: https://github.com/QwenLM/Qwen3-VL/blob/main/LICENSE.
+
+Exhibit A — Acceptable Use Policy
+MiniMax reserves the right to update this Acceptable Use Policy from time to time. 
+Last revised: August 2, 2026.
+MiniMax is committed to promoting the safe and fair use of its tools and features, including MiniMax H3. You agree not to use MiniMax H3, any Model Derivatives, or any Output in any of the following ways:
+1. Use outside the Applicable Territory;
+2. Use in any manner that violates any applicable national, federal, state, local, or international law, regulation, or other legal requirement, or that infringes, misappropriates, or otherwise violates any Third Party’s intellectual-property or other proprietary rights, including through unauthorized reproduction, distribution, public display, public performance, or creation of derivative works;
+3. Use in any manner that may harm yourself or others;
+4. Use to repurpose or distribute the Outputs of MiniMax H3 or any Model Derivatives in order to harm yourself or others;
+5. Use to circumvent or bypass any safety guardrails or safeguards we have implemented;
+6. Use in any manner that exploits or harms, or intends to exploit or harm, minors;
+7. Use to generate or disseminate verifiably false information and/or content for the purpose of harming others or influencing elections;
+8. Use to manufacture or facilitate false online engagement, including fake reviews and other means of false online engagement;
+9. Use to intentionally defame, disparage, or otherwise harass others;
+10. Use to generate and/or disseminate malware (including ransomware) or any other content intended to damage electronic systems;
+11. Use to generate or disseminate personally identifiable information for the purpose of harming others;
+12. Use to generate or disseminate information (including images, code, posts, or articles) in or to any public environment (including via bot tweets or similar means) without clearly and prominently disclosing that such information and/or content is machine-generated;
+13. Use to impersonate another person without that person’s consent, authorization, or lawful right to do so;
+14. Use to make high-risk automated decisions in critical domains that affect individual safety, rights, or well-being (such as law enforcement, immigration, healthcare or medical services, critical-infrastructure management, product-safety components, essential services, credit, employment, housing, education, social scoring, or insurance);
+15. Use in any manner that violates or disregards the social, ethical, or moral standards of other countries or regions;
+16. Use to carry out, assist, threaten, incite, plan, advocate for, or encourage violent extremism or terrorism;
+17. Use for any purpose intended to discriminate against, or harm, individuals or groups based on protected characteristics or categories, online or offline social behavior, or known or predicted personality traits;
+18. Use to intentionally exploit the vulnerabilities of specific populations based on age, social, physical, or psychological characteristics, so as to materially distort the behavior of a member of that group in a manner that causes, or is likely to cause, physical or psychological harm to that person or to others;
+19. Use for military purposes;
+20. Use to engage in any unauthorized or unlicensed professional activity, including but not limited to financial, legal, medical or healthcare, or other professional practice.

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NOTICE

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+unsloth/MiniMax-H3-FP8
+
+"MiniMax H3 is licensed under the MiniMax H3 Community License Agreement,
+Copyright (c) 2026 MiniMax. All Rights Reserved."
+
+The weights here derive from MiniMax-H3 (https://huggingface.co/MiniMaxAI/MiniMax-H3).
+LICENSE is the text MiniMax ships at
+https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/LICENSE, verbatim.
+
+Modified files and the changes made to them (MiniMax H3 Community License Agreement,
+Section III.2). Both files start from minimax_h3_fl2va_pruned_bf16.safetensors as
+published by Comfy-Org (https://huggingface.co/Comfy-Org/MiniMax-H3), which is the
+H3-Base FL2VA diffusion transformer with the dense adaLN modulation projection replaced
+by a rank-8 factorization of the time-embedding curve. That pruning is Comfy-Org's work
+and not Unsloth's.
+
+  * MiniMax-H3-INT8.pt: the 200 main-block 2-D matmul weights
+    (blocks.N.{attn.qkv_proj, attn.out_proj, mlp.fc1, mlp.fc2}.weight) quantized to
+    signed 8-bit integers with per-output-channel absmax scales, which changes the
+    numerics. No block-Hadamard rotation is applied. Every other tensor is copied
+    through bit-identical at its source precision.
+  * MiniMax-H3-FP8.pt: the same 200 weights quantized to float8 e4m3 with
+    per-output-channel absmax scales, which changes the numerics. Every other tensor is
+    copied through bit-identical at its source precision.
+
+Both are serialized as torchao pre-quantized state dicts rather than as safetensors.
+
+Not an official MiniMax or Comfy-Org product, and not endorsed by either.

README.md

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+---
+license: other
+license_name: minimax-h3-community-license-agreement
+license_link: https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/LICENSE
+base_model:
+- MiniMaxAI/MiniMax-H3
+base_model_relation: quantized
+language:
+- en
+- zh
+pipeline_tag: image-text-to-video
+tags:
+- fp8
+- int8
+- quantized
+- text-to-video
+- image-to-video
+- video-generation
+- unsloth
+---
+
+# MiniMax-H3, FP8 and INT8
+
+Pre-quantized PyTorch checkpoints of
+[MiniMaxAI/MiniMax-H3](https://huggingface.co/MiniMaxAI/MiniMax-H3), for diffusers plus torchao.
+
+MiniMax H3 is an omni-modal generative system that produces video with native stereo audio, up to
+15 seconds at 24 FPS with 32 kHz stereo audio. The files here quantize the `fl2va_pruned`
+H3-Base first-and-last-frame variant, which takes zero, one or two input images plus text, and the
+`ref2va_pruned` omni-reference variant, which takes a prompt plus up to twelve image, video and
+audio references. Both schemes quantize the same 200 main-block matmuls, 95.8% of the parameters,
+and leave every 1-D gain, every bias and the whole modulation path bit-identical.
+
+## Examples
+
+Same prompt, same seed, same settings, one clip per checkpoint. 960x544, 124 frames, 24 FPS,
+8 steps, guidance 1.0, seed 11, on a single card.
+
+> a red panda stepping along a mossy log in a misty forest, cinematic
+
+| INT8 | FP8 |
+|---|---|
+| <img src="assets/h3_int8.gif" width="380"> | <img src="assets/h3_fp8.gif" width="380"> |
+
+The GIFs are downsampled and silent. For the full 960x544 clips with their native 32 kHz stereo
+audio track, play
+[`assets/h3_int8.mp4`](https://huggingface.co/unsloth/MiniMax-H3-FP8/blob/main/assets/h3_int8.mp4)
+and
+[`assets/h3_fp8.mp4`](https://huggingface.co/unsloth/MiniMax-H3-FP8/blob/main/assets/h3_fp8.mp4).
+H3 generates the audio jointly with the video, so the audio is part of the model output rather
+than something added afterwards.
+
+Stills from other prompts, three per format:
+
+INT8
+
+<img src="samples/int8_1.png" width="260"> <img src="samples/int8_2.png" width="260"> <img src="samples/int8_3.png" width="260">
+
+FP8
+
+<img src="samples/fp8_1.png" width="260"> <img src="samples/fp8_2.png" width="260"> <img src="samples/fp8_3.png" width="260">
+
+## Files
+
+H3 ships two denoiser partitions and a load opens exactly one. `transformer/` serves the keyframe
+workflow `fl2va`, which also covers text-only generation; `transformer_ref/` serves the
+omni-reference workflow `ref2va`. They are separate weights, so each partition has its own
+checkpoints here and the two sets are not interchangeable.
+
+Keyframe and text-only (`fl2va`, from `transformer/`):
+
+| File | Size |
+|---|---|
+| `MiniMax-H3-INT8.pt` | 18.86 GiB |
+| `MiniMax-H3-INT8-ConvRot.pt` | 18.86 GiB |
+| `MiniMax-H3-FP8.pt` | 18.87 GiB |
+
+Omni-reference (`ref2va`, from `transformer_ref/`):
+
+| File | Size |
+|---|---|
+| `MiniMax-H3-Ref2VA-INT8-ConvRot.pt` | 18.86 GiB |
+| `MiniMax-H3-Ref2VA-FP8.pt` | 18.87 GiB |
+
+**Every checkpoint lives here, INT8 included.** One repo on purpose: these are one artifact built
+a few ways, and a loader picks between them by filename. Against the 40.23 GB bf16 pruned source
+any of them takes the checkpoint to 20.25 GB and the end-to-end render peak from 57.11 GB to
+36.97 GB. Prefer INT8 with `torch.compile` and FP8 without it.
+
+Pick the pair that matches the workflow you are running. The two partitions have the same class,
+the same config and the same 635-key state dict, so a keyframe checkpoint seeded into the
+reference workflow loads cleanly, passes every metadata check and generates from the wrong
+weights rather than failing. The `Ref2VA` in the filename is the only thing that distinguishes
+them.
+
+The `-ConvRot` INT8 files store their weights in a Hadamard-rotated basis and need a loader that
+rotates the activations to match; they carry a format tag that makes an older loader refuse them
+rather than read them as plain INT8. Where both an INT8 and an INT8-ConvRot file exist, the
+ConvRot one is the newer build.
+
+### Reference (Ref2VA) build recipe
+
+Identical to the keyframe rungs apart from the source file: 313 Linears quantized, 55 skipped, the
+`adaLN` modulation path left at full precision, and on the INT8 arm a ConvRot Hadamard rotation at
+group size 256 over all 313. The source is
+`minimax_h3_ref2va_pruned_bf16.safetensors` from
+[Comfy-Org/MiniMax-H3](https://huggingface.co/Comfy-Org/MiniMax-H3), which is the reference
+partition with the same curve-form modulation pruning as the keyframe one, and both files record
+it in `metadata.base_checkpoint`.
+
+Verified before publishing: each file loads through the pre-quantized path against the
+`transformer_ref` config with no missing or unexpected keys, and renders a 640x384, 124-frame
+reference clip. Measured against the reference-partition bfloat16 denoiser at the same prompt,
+seed and shape (20 steps, two prompts, one image reference), the same composition comes back with
+fine detail redistributed: SSIM 0.92 and 0.82 for INT8 and 0.88 and 0.78 for FP8, against a
+determinism ceiling of 1.00 for the bfloat16 arm rendered twice. Those numbers are a divergence
+measure, not a quality score.
+
+Both are torchao pre-quantized transformer state dicts, per-output-channel absmax scales, INT8
+symmetric and FP8 e4m3. The skeleton is built on `meta` and the quantized subclass tensors are
+assigned rather than copied, so dense bf16 never touches the GPU. Each file carries
+`base_model_id = MiniMaxAI/MiniMax-H3` and a `base_checkpoint` naming the exact source it was cut
+from (`.../minimax_h3_fl2va_pruned_bf16.safetensors` or
+`.../minimax_h3_ref2va_pruned_bf16.safetensors`) in its metadata, which the loader checks before
+accepting it.
+
+The keyframe source is `minimax_h3_fl2va_pruned_bf16.safetensors` from
+[Comfy-Org/MiniMax-H3](https://huggingface.co/Comfy-Org/MiniMax-H3), which already has the
+modulation pruned to `[96768, 8]` per block plus a shared `adaln_t_table [1025, 8]`. Note that
+stable-diffusion.cpp cannot load these, it has no int8 linear path that reads external per-channel
+scales, so for sd.cpp use
+[unsloth/MiniMax-H3-GGUF](https://huggingface.co/unsloth/MiniMax-H3-GGUF) instead.
+
+## Licence
+
+MiniMax H3 Community License Agreement, from MiniMax-H3. Full text in
+[`LICENSE`](https://huggingface.co/unsloth/MiniMax-H3-FP8/blob/main/LICENSE). Read it before use:
+it defines an Applicable Territory and excludes some jurisdictions from it. MiniMax also publish a
+[Q&A about the licence](https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/docs/QA-about-License.md).
+
+These files are Model Derivatives, not a plain copy: the transformer is quantized and its
+modulation is pruned, both of which change the numerics. Section III of the licence wants that
+stated, so [`NOTICE`](https://huggingface.co/unsloth/MiniMax-H3-FP8/blob/main/NOTICE) lists every
+change along with the attribution. Not an official MiniMax product, and not endorsed by MiniMax.

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