Update: the OSI has also clarified that Llama 2 is not open source:

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

Original:

See

> 2. Additional Commercial Terms. If, on the Llama 2 version release date, the monthly active users of the products or services made available by or for Licensee, or Licensee’s affiliates, is greater than 700 million monthly active users in the preceding calendar month, you must request a license from Meta, which Meta may grant to you in its sole discretion, and you are not authorized to exercise any of the rights under this Agreement unless or until Meta otherwise expressly grants you such rights.

Which violates the open source definition.