[License-review] [2nd Resubmission] ModelGo Attribution License, Version 2.0

Thu Oct 30 13:41:16 UTC 2025

Hi Carlo,

I also thought it would be helpful to provide the full set in this thread, but I was concerned about causing additional versioning confusion, so I didn’t include them in my previous response~
I’ve now placed the final versions of the license text files below (please ignore the license texts shared in other threads).

These final versions are mostly consistent with the 2nd resubmission, except for the following updates:

I updated the copyright years of all three licenses from 2024 to 2025 to ensure everything is up to date. 
In this email, I revised MG-BY-SA-2.0 by replacing “Source Code Form” with “Preferred Adaptable Form.”

I agree that “Source Code Form” in the SA could be misleading, so I replaced it with “Preferred Adaptable Form.” However, this term may still require further discussion. For example, someone might argue that providing only API access could also be considered “adaptable,” since users can improve outputs via prompts for their specific use cases. Ultimately, the core question remains how copyleft concept can effectively enforce in the context of ML models. 
As for the other two, I think MG0 and MG-BY are already in good shape after the continued rounds of review and iteration, and I wonder if we might be close to reaching consensus on them.

For convenience, I’ve also attached the license texts from the (1st) resubmission (in 1stR.zip) and provide the word-diff views between the 1st and 2nd resubmissions using Diffchecker links below. More discussion about these modifications can be found in the (1st) resubmission thread.

MG0: https://www.diffchecker.com/N95uZiD1/
MG-BY: https://www.diffchecker.com/GfjVnw3u/
MG-BY-SA: https://www.diffchecker.com/NvVxWuAl/

Best,
Moming

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ModelGo Attribution License
Version 2.0, May 2025

By exercising the rights granted in Section 2.1, You acknowledge and agree that You have 
read, understood, and agree to be bound by the terms and conditions of this License. If You 
do not agree to any terms and/or conditions of this License, then the Licensor grants You no 
rights under this License.

1.	DEFINITIONS

"Complementary Materials" means the source code and scripts used to define, run, load, 
benchmark and/or evaluate the Model, and prepare data for the purpose of training, pretraining, 
fine-tuning and/or evaluation of the Model, and any tutorials, operating manuals, user guides 
and/or documentation that guide users in using, operating, implementing and/or customising 
the Model.

"Derivative Materials" means all improvements, modifications or derivative works to the 
Licensed Material or any part thereof, which are created or developed by You (either by 
Yourself or jointly with other third parties), including any derivative model developed by 
transferring patterns of weights, parameters, activations and/or Output from the Model, such as 
through distillation methods or synthetic data generation techniques, in order to replicate, 
approximate, or otherwise achieve functional behavior that is similar to the Model.

"Distribution" (or "Distribute") means any transmission, publication, public performance, 
sharing, or other methods of making the Licensed Materials, Derivative Materials and/or Output 
available to a third party, including providing the Licensed Materials or any part thereof as a 
hosted service or remotely accessible service, such as API-based access or web access.

"Licensor" means the rights owner that is granting the License.

"Licensed Materials" means the Model and Complementary Materials that are Distributed by 
the Licensor under this License. The Licensed Materials do not include any datasets used for 
pretraining, training, adapting, or evaluating the Model, which may or may not be made 
available under a separate license.

"Model" means the machine-learning constructs and/or assemblies licensed by the Licensor 
under this License, including any checkpoints, learned weights, parameters (including optimizer 
states) and the model architecture.

"Output" means any information, data, and/or content, including but not limited to images, text, 
text effects, audio files, and/or video files, generated through operation of the Model, or through 
operation of any new model developed by transferring patterns from the Model.

"You" (or "Your") means you, or any other person or entity you are entering into this license on 
behalf of, provided you have the legal authority to bind such person or entity.

2.	LICENSE RIGHTS

2.1	Grant of Rights

(a)	Subject to the conditions in Section 2.2 of this License, the Licensor hereby grants to 
You a non-exclusive, sublicensable, irrevocable, royalty-free, worldwide license under 
the relevant copyrights, patent rights, database rights, and any other intellectual property 
rights to:

(i)	make, have made, use, reproduce, sell, offer to sell, import and Distribute the 
Licensed Materials;

(ii)	use the Licensed Materials to create Derivative Materials; and

(iii)	make, have made, use, reproduce, sell, offer to sell, import and Distribute 
Derivative Materials.

2.2	Conditions

(a)	If You Distribute any of the Licensed Materials or Derivative Materials, You shall:

(i)	provide a copy of this License with the Licensed Material or Derivative Materials;

(ii)	in the case of Distributing Derivative Materials, provide as part of the Distribution, 
prominent notices stating that You have modified the Licensed Materials and the 
relevant date of such modification;

(iii)	retain as part of the Distribution any existing copyright notice, attribution notice, 
and/or any notice identifying the authors of the Licensed Materials and any 
Derivative Materials.

2.3	Reservation of Rights

You shall not refer to the Licensor or use the Licensor's trademarks, trade names, and service 
marks, for any publicity, advertising or marketing purposes, without the Licensor's prior written 
consent.

3.	DISCLAIMER

To the maximum extent permissible under applicable law, the Licensed Materials are provided 
on an "as is" and "as available" basis without any representation or warranty of any kind 
(whether express, implied, statutory or otherwise), including of merchantability, satisfactory 
quality, fitness for a particular purpose, title, accuracy, correctness, absence of error, reliability, 
timeliness, non-infringement of or compliance with any laws, regulations and/or third-party 
rights, all of which are expressly disclaimed by the Licensor.

4.	LIMITATION OF LIABILITY

To the maximum extent permissible under applicable law, the Licensor shall not be liable for 
any claims, damages, or any other liabilities, in any way arising out of or in connection with the 
Licensed Materials, Derivative Materials, and/or Output, whether on an action or claim in 
contract, tort (including negligence), breach of statutory duty or otherwise, even if the Licensor 
has been advised of the possibility of such damages.

5.	TERMINATION

This License shall terminate immediately if You breach any material term and/or condition of 
this License, or if You initiate any legal action against the Licensor alleging that the Licensed 
Materials and/or Derivative Materials infringe any patent worldwide. Sections 3, 4 and 6 shall 
survive the termination of this License.

6.	MODIFICATION OF THIS LICENSE

This License is Copyright © 2025 National University of Singapore. Permission is granted to 
copy, distribute, or communicate this License without modification. Nothing in this License 
permits You to modify this License as applied to the Licensed Materials. However, You may 
modify the text of this License and copy, distribute or communicate Your modified version and 
apply it to other original works of authorship, provided that You do not use the name "ModelGo" 
for your version of the license and furnish a readable notice describing Your modifications to 
this License.
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ModelGo Zero License
Version 2.0, May 2025

By exercising the rights granted in Section 2.1, You acknowledge that You have read and 
understood this License, including the Disclaimer in Section 3.

1.	DEFINITIONS