The licensing terms say you're not allowed to use this to improve your own LLM, and that you need to get a license from Facebook if you get more than 700 million users. While that's a big number, those are still restrictions on how I can use the software.

The OSI, which stands for Open Source Initiative, is a public charity organization dedicated to Open Source, https://opensource.org/, has explicitly stated (on Twitter) that this license is not Open Source because of those restrictions.

https://twitter.com/opensourceorg/status/1681363091009986560

Sure! An actual open source app would let me use it to contribute to another model.

There's no "real open source", only open source (meets the open source definition) and not open source. The open source definition is here: https://opensource.org/osd/

In the sense that if I worked for a big company, I have reasons to not look into Llama as a using it for work would have obstacles.

That doesn’t matter and isn’t the point. This doesn’t match the definition of open source. That’s a fact.