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No, Grok 2.5 has not been open-sourced. Here’s how you can tell

X / Elyse Betters Picaro / ZDNET

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ZDNET’s key takeaways

  • Grok 2.5’s license blocks true open-source use.
  • Musk’s “open source” claim amounts to open-washing.
  • Other AI projects offer real open access and freedom.

Companies love to exaggerate about open-sourcing AI. It plays well with people, naive developers get excited, and stock buyers invest more cash in their businesses. There’s only one little problem: It’s not true. 

First, Mark Zuckerberg claimed Meta Llama was open source. Now, it’s Elon Musk’s turn, as he claims that his AI startup<!–>, xAI, is open-sourcing Grok 2.5, last year’s large language model (LLM).

Also: X’s Grok did surprisingly well in my AI coding tests

“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,” said Musk on X–>. This release comes with the complete model weights. Grok 2 is available to download on Hugging Face<!–>.

Why is Musk doing this? 

Unofficially, it’s to get more people excited and buying into Grok over its competitors. This is classic open-washing–>, where the name of the game is to claim something is open source without actually open-sourcing the code. 

Also: Open-source skills can save your career when AI comes knocking

Officially, it’s part of xAI’s push for transparency and broader developer participation in its code. If you improve the code, xAI will be happy to use your changes. Of course, that’s true of any open-source project. However, I quote from the Grok license<!–>:

You may not use the Materials, derivatives, or outputs (including generated data) to train, create, or improve any foundational, large language, or general-purpose AI models, except for modifications or fine-tuning of Grok 2 permitted under and in accordance with the terms of this Agreement.

Yeah, so there is that.

That’s not so open, is it?

As one person put it on Y Combinator–>, those limitations mean:

Exactly so.

Also: AI is creeping into the Linux kernel – and official policy is needed ASAP

Leaving aside the Open Source Initiative (OSI)<!–> Open Source AI Definition (OSAID), which Grok doesn’t come close to meeting, the code also fails by the more broadly accepted open-source definitions.

Specifically, it fails on these grounds:


Source: Robotics - zdnet.com