Add model card and license

LICENSE

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+               PicsArt Inc. FlowDIS Model License v1.0
+                    Non-Commercial Use License
+
+PicsArt Inc. ("PicsArt," "we," "our," or "Company") makes the weights,
+parameters, and inference code for FlowDIS (as defined below) 
+available for your non-commercial and non-production use under the 
+terms of this License.
+   
+FlowDIS is a derivative of FLUX.1 [schnell] by Black Forest Labs,
+Inc., which is licensed under the Apache License, Version 2.0. The
+original FLUX.1 [schnell] model and its associated copyright, patent,
+trademark, and attribution notices are included with this
+distribution. A copy of the Apache License, Version 2.0 is provided
+in the accompanying APACHE-2.0-LICENSE file. This model contains
+modifications made by PicsArt Inc. to the original FLUX.1 [schnell]
+model. By downloading, accessing, using, Distributing, or creating a
+Derivative of FlowDIS, you agree to the terms of this License. If you
+do not agree, you have no rights to access, use, Distribute, or
+create a Derivative of FlowDIS and must immediately cease using it.
+If you accept this License on behalf of your employer or another
+entity, you represent and warrant that you have full legal authority
+to bind that employer or entity.
+
+1. Definitions
+
+   (a) "Derivative" means any (i) modified version of FlowDIS (including
+       any fine-tuned or distilled version), (ii) work based on FlowDIS,
+       or (iii) any other derivative work thereof. For clarity, Outputs
+       are not Derivatives.
+
+   (b) "Distribution" or "Distribute" means providing or making
+       available, by any means, a copy of FlowDIS and/or Derivatives.
+
+   (c) "Non-Commercial Purpose" means any of the following uses, but
+       only so far as you do not receive any direct or indirect payment
+       arising from the use of FlowDIS or Derivatives:
+
+       (i) personal use for research, experimentation, and testing for the
+           benefit of public knowledge, personal study, private
+           entertainment, hobby projects, or otherwise not directly or
+           indirectly connected to any commercial activities, business
+           operations, or employment responsibilities;
+
+      (ii) use by commercial or for-profit entities for testing,
+           evaluation, or non-commercial research and development in a
+           non-production environment; and
+
+     (iii) use by any charitable organization for charitable purposes,
+           or for testing or evaluation. For clarity, use (a) for
+           revenue-generating activity, (b) in direct interactions with
+           or that has impact on end users, or (c) to train, fine-tune,
+           or distill other models for commercial use, in each case, is
+           not a Non-Commercial Purpose.
+
+   (d) "Outputs" means any content generated by the operation of FlowDIS
+       or Derivatives from an input or prompt provided by users. Outputs
+       do not include any components of FlowDIS such as fine-tuned
+       versions, weights, or parameters.
+
+   (e) "you" or "your" means the individual or entity entering into this
+       License with Company.
+
+2. License Grant
+
+   (a) License. Subject to your compliance with this License, Company
+       grants you a non-exclusive, worldwide, non-transferable,
+       non-sublicensable, revocable, royalty-free, and limited license
+       to access, use, create Derivatives of, and Distribute FlowDIS and
+       Derivatives solely for Non-Commercial Purposes. This license is
+       personal to you, and you may not assign or sublicense this
+       License or any rights or obligations under it without Company's
+       prior written consent; any such assignment or sublicense will be
+       void and will automatically and immediately terminate this
+       License. Any restrictions set forth herein regarding FlowDIS also
+       apply to any Derivative you create or that is created on your
+       behalf.
+
+   (b) Non-Commercial Use Only. You may only access, use, Distribute, or
+       create Derivatives of FlowDIS or Derivatives for Non-Commercial
+       Purposes. If you wish to use FlowDIS or a Derivative for any
+       purpose not expressly authorized under this License, you must
+       request a license from Company, which Company may grant in its
+       sole discretion and which may be subject to a fee, royalty, or
+       other revenue share.
+
+   (c) Reserved Rights. The grant of rights expressly set forth in this
+       License constitutes the complete grant of rights to use FlowDIS,
+       and no other licenses are granted, whether by waiver, estoppel,
+       implication, equity, or otherwise. Company and its licensors
+       reserve all rights not expressly granted by this License.
+
+   (d) Outputs. Company claims no ownership rights in Outputs. You are
+       solely responsible for the Outputs you generate and their
+       subsequent uses in accordance with this License. You may use
+       Outputs for any purpose (including commercial purposes), except
+       as expressly prohibited herein.
+
+3. Distribution
+
+   Subject to this License, you may Distribute copies of FlowDIS and/or
+   Derivatives made by you under the following conditions:
+   (a) You must make available a copy of this License to third-party
+       recipients of FlowDIS and/or Derivatives you Distribute, and
+       specify that any rights to use FlowDIS and/or Derivatives shall
+       be granted directly by Company to said third-party recipients
+       pursuant to this License.
+
+   (b) You must prominently display the following notice alongside the
+       Distribution (such as via a "NOTICE" text file distributed as
+       part of FlowDIS or the Derivative) (the "Attribution Notice"):
+       This model is licensed by PicsArt Inc. under the PicsArt Inc.
+       FlowDIS Model License v1.0. Copyright 2026 PicsArt Inc. This
+       model is a derivative of FLUX.1 [schnell] by Black Forest Labs,
+       Inc., licensed under the Apache License, Version 2.0. IN NO EVENT
+       SHALL PICSART INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+       LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+       ARISING FROM, OUT OF OR IN CONNECTION WITH USE OF THIS MODEL.
+
+   (c) In the case of Distribution of Derivatives made by you: (i) you
+       must include in the Attribution Notice a statement that you have
+       modified FlowDIS; (ii) any terms and conditions you impose on
+       third-party recipients relating to your Derivatives shall neither
+       limit such recipients' use of FlowDIS or any Derivatives made by
+       Company in accordance with this License, nor conflict with any of
+       its terms and conditions, and must include disclaimer of
+       warranties and limitation of liability provisions at least as
+       protective of Company as those set forth herein; and (iii) you
+       must not misrepresent or imply that Derivatives made by or for
+       you are an official product of PicsArt Inc. or have been
+       endorsed, approved, or validated by PicsArt Inc., unless
+       authorized by Company in writing.
+
+   (d) Apache 2.0 Compliance. All Distributions must include: (i) a copy
+       of the Apache License, Version 2.0; (ii) all copyright, patent,
+       trademark, and attribution notices from the original FLUX.1
+       [schnell] model; and (iii) prominent notices stating that the
+       files have been modified from the original FLUX.1 [schnell]
+       model.
+
+4. Restrictions
+
+   You will not, and will not permit, assist, or cause any third party
+   to:
+   (a) use, modify, copy, reproduce, create Derivatives of, or
+       Distribute FlowDIS (or any Derivative or data produced by
+       FlowDIS), in whole or in part, for:
+
+       (i) any commercial or production purpose;
+
+      (ii) any military purpose, including research, development,
+           design, manufacture, production, or use of weapons, weapons
+           systems, munitions, or any military or defense applications;
+
+     (iii) purposes of surveillance, including any research or
+           development relating to surveillance;
+
+      (iv) biometric processing;
+
+       (v) any manner that infringes, misappropriates, or otherwise violates
+           any third party's legal rights, including rights of publicity or
+           digital replica rights;
+
+      (vi) any unlawful, fraudulent, defamatory, or abusive activity;
+
+     (vii) generating unlawful content, including child sexual abuse
+           material or non-consensual intimate images; or
+
+    (viii) any manner that violates any applicable law, privacy or
+           security laws, rules, regulations, directives, or
+           governmental requirements (including the GDPR, the California
+           Consumer Privacy Act, laws governing the processing of
+           biometric information, and the EU AI Act, as well as all
+           amendments and successor laws to any of the foregoing);
+
+   (b) alter or remove copyright and other proprietary notices which
+       appear on or in any portion of FlowDIS;
+
+   (c) utilize any equipment, device, software, or other means to
+       circumvent or remove any security or protection used by Company
+       in connection with FlowDIS, or to circumvent or remove any usage
+       restrictions, or to enable functionality disabled by Company;
+
+   (d) offer or impose any terms on FlowDIS that alter, restrict, or are
+       inconsistent with the terms of this License;
+
+   (e) violate any applicable U.S. and non-U.S. export control and trade
+       sanctions laws ("Export Laws") in connection with your use or
+       Distribution of FlowDIS; or
+
+   (f) directly or indirectly Distribute, export, or otherwise transfer
+       FlowDIS (i) to any individual, entity, or country prohibited by
+       Export Laws; (ii) to anyone on U.S. or non-U.S. government
+       restricted parties lists; (iii) for any purpose prohibited by
+       Export Laws, including nuclear, chemical or biological weapons,
+       or missile technology applications; (iv) if you or they are
+       located in a comprehensively sanctioned jurisdiction, currently
+       listed on any U.S. or non-U.S. restricted parties list, or for
+       any purpose prohibited by Export Laws; or (v) while disguising
+       your location through IP proxying or other methods.
+
+5. Disclaimers
+
+   THE MODEL IS PROVIDED "AS IS" AND "WITH ALL FAULTS" WITH NO WARRANTY
+   OF ANY KIND, EXPRESS OR IMPLIED. COMPANY EXPRESSLY DISCLAIMS ALL
+   REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, WHETHER BY
+   STATUTE, CUSTOM, USAGE OR OTHERWISE, INCLUDING BUT NOT LIMITED TO THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+   PURPOSE, TITLE, SATISFACTORY QUALITY, OR NON-INFRINGEMENT. COMPANY
+   MAKES NO WARRANTIES OR REPRESENTATIONS THAT THE MODEL WILL BE ERROR
+   FREE OR FREE OF VIRUSES OR OTHER HARMFUL COMPONENTS, OR PRODUCE ANY
+   PARTICULAR RESULTS.
+
+6. Limitation of Liability
+
+   TO THE FULLEST EXTENT PERMITTED BY LAW, IN NO EVENT WILL COMPANY BE
+   LIABLE TO YOU OR YOUR EMPLOYEES, AFFILIATES, USERS, OFFICERS, OR
+   DIRECTORS (A) UNDER ANY THEORY OF LIABILITY, WHETHER BASED IN
+   CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, WARRANTY, OR OTHERWISE
+   UNDER THIS LICENSE, OR (B) FOR ANY INDIRECT, CONSEQUENTIAL,
+   EXEMPLARY, INCIDENTAL, PUNITIVE, OR SPECIAL DAMAGES OR LOST PROFITS,
+   EVEN IF COMPANY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+   THE MODEL, ITS CONSTITUENT COMPONENTS, AND ANY OUTPUT (COLLECTIVELY,
+   "MODEL MATERIALS") ARE NOT DESIGNED OR INTENDED FOR USE IN ANY
+   APPLICATION OR SITUATION WHERE FAILURE OR FAULT COULD REASONABLY BE
+   ANTICIPATED TO LEAD TO SERIOUS INJURY OF ANY PERSON, INCLUDING
+   POTENTIAL DISCRIMINATION OR VIOLATION OF AN INDIVIDUAL'S PRIVACY
+   RIGHTS, OR TO SEVERE PHYSICAL, PROPERTY, OR ENVIRONMENTAL DAMAGE
+   (EACH, A "HIGH-RISK USE"). IF YOU ELECT TO USE ANY MODEL MATERIALS
+   FOR A HIGH-RISK USE, YOU DO SO AT YOUR OWN RISK. YOU AGREE TO DESIGN
+   AND IMPLEMENT APPROPRIATE DECISION-MAKING AND RISK-MITIGATION
+   PROCEDURES AND POLICIES IN CONNECTION WITH A HIGH-RISK USE.
+
+7. Indemnification
+
+   You will indemnify, defend, and hold harmless Company and its
+   subsidiaries and affiliates, and each of their respective
+   shareholders, directors, officers, employees, agents, successors, and
+   assigns (collectively, the "Company Parties") from and against any
+   losses, liabilities, damages, fines, penalties, and expenses
+   (including reasonable attorneys' fees) incurred by any Company Party
+   in connection with any claim, demand, allegation, lawsuit,
+   proceeding, or investigation ("Claims") arising out of or related to:
+   (a) your access to or use of FlowDIS (including any Output or data
+   generated from such use), including any High-Risk Use; (b) your
+   violation of this License; or (c) your violation, misappropriation,
+   or infringement of any rights of another (including intellectual
+   property or other proprietary rights and privacy rights). You will
+   promptly notify the Company Parties of any such Claims and cooperate
+   with Company Parties in defending such Claims. You will also grant
+   the Company Parties sole control of the defense or settlement, at
+   Company's sole option, of any Claims. This indemnity is in addition
+   to, and not in lieu of, any other indemnities or remedies set forth
+   in a written agreement between you and Company or the other Company
+   Parties.
+
+8. Termination; Survival
+
+   (a) This License will automatically terminate upon any breach by you
+       of the terms of this License.
+
+   (b) Company may terminate this License, in whole or in part, at any
+       time upon notice (including electronic) to you.
+
+   (c) If you initiate any legal action or proceedings against Company
+       or any other entity (including a cross-claim or counterclaim),
+       alleging that FlowDIS, any Derivative, or any part thereof,
+       infringes upon intellectual property or other rights owned or
+       licensable by you, then any licenses granted to you under this
+       License will immediately terminate as of the date such legal
+       action or claim is filed.
+
+   (d) Upon termination, you must cease all use, access, or Distribution
+       of FlowDIS and any Derivatives. Sections 2(c), 2(d), 4 through 11
+       survive termination.
+
+9. Third-Party Materials
+
+   FlowDIS is derived from FLUX.1 [schnell] by Black Forest Labs, Inc.,
+   and may contain additional third-party software or components
+   (including free and open-source software) ("Third-Party Materials"),
+   which are subject to the license terms of the respective third-party
+   licensors. Your dealings or correspondence with third parties and
+   your use of or interaction with any Third-Party Materials are solely
+   between you and the third party. Company does not control or endorse,
+   and makes no representations or warranties regarding, any Third-Party
+   Materials, and your access to and use of such Third-Party Materials
+   are at your own risk.
+
+10. Trademarks
+
+   No trademark license is granted as part of this License. You may not
+   use any name, logo, or trademark associated with PicsArt Inc. without
+   Company's prior written permission, except to the extent necessary to
+   make the reference required in the Attribution Notice or as is
+   reasonably necessary in describing FlowDIS and its creators.
+
+11. General
+
+   This License will be governed and construed under the laws of the
+   State of Delaware without regard to conflicts of law provisions. If
+   any provision or part of a provision of this License is unlawful,
+   void, or unenforceable, that provision or part is deemed severed from
+   this License and will not affect the validity and enforceability of
+   any remaining provisions. The failure of Company to exercise or
+   enforce any right or provision of this License will not operate as a
+   waiver of such right or provision. This License does not confer any
+   third-party beneficiary rights upon any other person or entity. This
+   License, together with any accompanying documentation, contains the
+   entire understanding between you and Company regarding its subject
+   matter and supersedes all other written or oral agreements and
+   understandings between you and Company regarding such subject matter.

README.md

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+---
+license: other
+license_name: picsart-flowdis-model-license
+license_link: LICENSE
+base_model: PAIR/FlowDIS
+tags:
+- image-segmentation
+- dichotomous-image-segmentation
+- quantization
+- int8
+- flux
+---
+
+# FlowDIS transformer — INT8 ConvRot
+
+INT8 quantization of the [FlowDIS](https://huggingface.co/PAIR/FlowDIS) DiT
+(12B, FLUX.1-schnell architecture) with group-wise Hadamard rotations
+([ConvRot, arXiv:2512.03673](https://arxiv.org/abs/2512.03673)), in the
+ComfyUI-native quantized checkpoint format produced by
+[convert_to_quant](https://pypi.org/project/convert-to-quant/).
+
+Made for [Any Prompt DIS](https://github.com/Albertchen98/any-prompt-dis), whose
+low-VRAM mode (`--int8 --t5-int4`) runs the full segmentation pipeline in
+**~21 GiB peak VRAM at 1024²** (~18.4 GiB at 512²) — it fits a 24 GB card, which the
+bf16 pipeline (~35 GiB peak) does not. Quantizing this checkpoint yourself requires
+loading the bf16 transformer, so a 24 GB card also cannot produce it locally —
+hence this pre-quantized upload.
+
+## Details
+
+- 228 `double_blocks`/`single_blocks` linear layers quantized to INT8
+  (row-wise scales, ConvRot group size 256, rotations pre-applied to weights);
+  input/modulation/final layers kept in bf16.
+- End-to-end relative error vs bf16: ~1.2% on mask latents; visually
+  indistinguishable masks in our tests.
+- Runtime: `flowdis/quant.py` in the repo above — uses the fused
+  `comfy-kitchen` INT8 kernel when available (quantized linears ~1.5× faster
+  than bf16), otherwise a `torch.compile` fallback.
+
+Reproduce from the bf16 checkpoint:
+
+```bash
+pip install convert-to-quant
+ctq -i flowdis-transformer.safetensors \
+    -o flowdis-transformer-int8-convrot.safetensors \
+    --comfy_quant --int8 --convrot --convrot-group-size 256 \
+    --exclude-layers "img_in|txt_in|time_in|vector_in|mod|final_layer" \
+    --save-quant-metadata
+```
+
+## Usage
+
+```bash
+# place it next to the other FlowDIS weights:
+hf download Albertchen96/FlowDIS-int8-convrot flowdis-transformer-int8-convrot.safetensors \
+    --local-dir <root_model_dir>
+
+# then, in the any-prompt-dis repo:
+python inference_si.py --root-model-dir <root_model_dir> --int8 \
+    --image-path input.jpg --prompt "dog" --output-path mask.png
+```
+
+## License
+
+Derivative of the FlowDIS weights by Picsart AI Research; distributed under the
+same [PicsArt Inc. FlowDIS Model License](LICENSE) (non-commercial). Review it
+before redistribution or commercial use.