Opinion If you believe Mark Zuckerberg, Meta's AI large language model (LLM) Llama 3 is open source. It's not, despite what he says. The Open Source Initiative (OSI) spells it out in the Open Source Definition, and Llama 3's license – with clauses on litigation and branding – flunks it on several grounds. Meta, unfortunately, is far from unique in wanting to claim that some of its software and models are open source. Indeed, the concept has its own name: open washing. This is a deceptive practic...