25 Tech Giants Sign Open-Weight Coalition Letter; OpenAI and Anthropic Abstain
View original source →On July 24, a coalition of 25 technology companies published 'Open Weights and American AI Leadership' to US policymakers, arguing that open-weight AI is essential to national competitiveness. Microsoft and Meta co-led alongside NVIDIA. OpenAI, Anthropic, Google, and Amazon declined to sign.
Key Points:
• Signatories include NVIDIA, Microsoft, Meta, IBM, Dell, Palantir, Mistral, Hugging Face, Perplexity, Mozilla, Y Combinator, and Andreessen Horowitz.
• NVIDIA CEO Jensen Huang wrote that open models 'strengthen safety and cybersecurity, accelerate innovation, and enable sovereignty.'
• Satya Nadella publicly endorsed the letter and advocated for open-weight models on X.
• OpenAI, Anthropic, Google, and Amazon all declined to sign — reflecting their commercial dependence on proprietary API subscriptions.
• The letter directly responds to Washington debates about restricting Chinese open-weight models, triggered by Kimi K3's July 16 release.
Implications:
The letter is the first time the open vs. closed AI debate has crystallized into an explicit political document — it is a public declaration of commercial and policy position. The abstention of OpenAI and Anthropic from a letter co-signed by their own distribution partners (Microsoft, Meta) is a visible signal of diverging commercial interests. The outcome of the Washington policy debate will directly determine whether organizations can freely evaluate and deploy Chinese open-weight models including Kimi K3.
Why It Matters: The commercial divide is now public: companies that profit from open ecosystems signed; companies that profit from closed APIs did not. This fight will shape AI market structure and enterprise procurement options for years.