刚刚，黄仁勋首次发推：半个硅谷，力挺Kimi K3开源

TL;DR - Nvidia, Microsoft, Meta, Mistral, Hugging Face and others signed an open letter supporting open-weight AI, amid concern that restrictions prompted by Kimi K3 could favor closed-model providers. The dispute matters for model access, competition, security research and AI policy.

• The letter argues open weights lower deployment costs, reduce vendor lock-in and enable organizations to inspect, customize and self-host models.
• Signatories contend openness strengthens competition and security by enabling benchmarking, red-teaming and independent vulnerability research.
• Kimi K3 is described as a 2.8-trillion-parameter open model with full weights promised by July 27.
• The article says OpenAI and Anthropic raised concerns about distillation and intellectual property, while startups warned that restricting open models would increase dependence on costly APIs.