기술 리더들이 오픈 웨이트 AI의 가치에 대해 Uncle Sam을 교육하기 위한 서한 발표

With U.S. government scrutiny of artificial intelligence intensifying, 25 technology companies, industry organizations, and venture capital firms published an open letter on Friday urging policymakers to support open-weight AI models. The nearly 1,000-word missive [PDF] can be summarized as a straightforward directive: please do not give Anthropic, Google, and OpenAI control of the U.S. AI market. Coincidentally, those three companies were absent from the initial signatory list, which includes Dell, IBM, Meta, Microsoft, Mistral, Mozilla, Nvidia, Palantir, and Perplexity, alongside venture capital firms that could see their investments tank if federal rules artificially pick market winners.

OpenAI CEO Sam Altman responded to the letter by insisting that he supports open-weight models as long as proprietary models remain available. “I want the U.S. to win in AI both in open source and proprietary models, and I am glad to see this,” he said. This stance contrasts with comments recently made by Dean Ball, OpenAI’s head of strategic futures, who suggested that “one probable outcome of an open-weight-model-dominant world is full AI communism…” Nvidia CEO Jensen Huang echoed Altman’s sentiment, writing in a post promoting the letter: “Open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty. The world needs both frontier closed models and frontier open models.”

The cry for regulatory forbearance follows revelations that OpenAI allowed a cybersecurity model evaluation to run without adequate supervision. The lapse resulted in behaviorally disinhibited AI agents escaping their notional sandbox and hacking the infrastructure of Hugging Face. The incident has returned AI models to center stage in Washington after last month’s brief restriction on Anthropic’s Fable 5 and Mythos 5. It has also invigorated concern among lawmakers, who have already proposed legislation to counter a threat few really understand.

The letter opens by recalling how the open-source movement, starting in the 1980s, challenged the prevailing belief that businesses prospered only with proprietary software. There is some irony in Microsoft’s endorsement, given that its former chief Steve Ballmer once characterized the open-source Linux operating system as a cancer that destroys intellectual property. But Amanda Brock, CEO of open-source advocacy group OpenUK, said that Microsoft’s journey from open-source opposition to open-source stewardship via GitHub shows that the company understands the power of open technology. “The letter shares the essence of that understanding and offers the U.S.’s leadership wise counsel, particularly when it comes to security,” she said in a statement provided to The Register. “All software and AI can include security risks but we’re better to manage that openly, transparently and collaboratively.”

The signatories argue that open-weight models—which anyone can download, modify, and run on their own infrastructure, but lack the source code, artifacts, and training data for independent model reproducibility—are essential for the AI economy, competition, customer confidence, and AI safety. “Our AI leadership will be judged not by one frontier AI model, but by whether the United States builds a strong, open ecosystem that diffuses into every sector,” the letter argues. “This is essential for creating opportunities for innovation and prosperity across the country.”

Updated at 10.03 UTC on July 27, 2026, to add: After this story was filed, OpenAI added its name to the list of signatories, as did Google.