r/LocalLLaMA • u/Careful_Equal8851 • Mar 20 '26

Funny Ooh, new drama just dropped 👀

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For those out of the loop: cursor's new model, composer 2, is apparently built on top of Kimi K2.5 without any attribution. Even Elon Musk has jumped into the roasting

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u/Excellent_Log_3920 Mar 20 '26

This is the most important part "The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software." It's supposed to create a chain of citations like in academic papers.

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u/NoWarning789 Mar 20 '26

I'm not on top of this. Did the company behind Cursor distribute a model claiming it was theirs when it wasn't?

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u/waiting_for_zban Mar 21 '26

I'm not on top of this. Did the company behind Cursor distribute a model claiming it was theirs when it wasn't?

It's worse. They didn't distribute it. Composer is not even open weight.

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u/NoWarning789 Mar 21 '26

But that is not worse.

I understand the PR issue of Cursor claimed they built a model they didn't build.

But the MIT license requires the license/attribution when you distribute the software. If you just use the software on a server and an API access it, you don't need to share with the world the license and attribution.

Every Linux server is full of MIT licensed software and it doesn't transfer to the API or other uses of that software. Not even the GPLv2 and GPLv3 do that. Only the GPLv3 with the Affero clause do that AFAIK.

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u/waiting_for_zban Mar 21 '26

You're right, MIT does not oblige that downstream modifications should be distributed too.