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Meta made its Llama 2 AI model open-source because 'Zuck has balls,' a former top Facebook engineer says
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
The model, weights, and pre-trained data sets are. The training tools are not. You could argue that it's not "truly FOSS" without the tools to create that data, but technically, the article is correct.
The whole point of open-source is to be able to recreate it yourself so you can make changes. This is freeware. Free-as-in-beer, not free-as-in-speech. Hell, with freeware I can use it for commercial purposes, it’s not even as free as that.
Calling ML models "Open Source" is already confused. Because they are not programs, but rather formats, they don't come 1:1 with the source.
You can obtain a model and train it futher. Similliar how you can get JPEG file with permissive licence, edit it and share it. Having the GIMP/Photoshop project from the image was created from is helpful but not nessesary.
here's core difference: the nature of ai-models is generative, but all layers in a .PSD file are inherently static.
better analogy would be rendering of a fractal — a limited subset of infinite possibilities, but to explore the rest of them you need both rules and data