Is Grok open source?

“Worth noting that @xAI has been and will open source its models, including weights and everything, As we create the next version, we open source the prior version, as we did with Grok 1 when Grok 2 was released. The @xAI Grok 2.5 model, which was our best model last year, is now open source. Grok 3 will be made open source in about 6 months. Grok Build is now open source…”

— Elon Musk, 4 October 2024 · Post on X ↗