A group of 25 tech companies, including Nvidia, Microsoft, and Meta, have released a letter urging policymakers to avoid 'premature restrictions' on open-weight AI models [1]. The letter, which was signed by Nvidia CEO Jensen Huang and Microsoft CEO Satya Nadella, among others, argues that open-weight models strengthen competition and ensure that the benefits of the technology are 'broadly shared rather than concentrated in a few hands' [2]. The companies caution that relying solely on closed models is not inherently safe, and that concentrating advanced AI capabilities behind a small number of closed models compounds that risk [3]. The letter comes as Chinese open-weight models are gaining steam against leading offerings from American companies, sparking a debate about whether they should be restricted [4].

OpenAI and Anthropic, which are gearing up for potentially massive IPOs, did not sign the letter [5]. The companies argue that concerns about unlawful distillation should be addressed through 'targeted legal and commercial frameworks' instead of with 'sweeping restrictions on techniques that play an important role in AI innovation' [6].

Sources

  1. Nvidia, Microsoft, Meta warn against overregulating open-weight models (https://www.cnbc.com/amp/2026/07/24/nvidia-microsoft-meta-open-weight-ai-models.html)
  2. Nvidia Leads Letter Warning Against Overregulating Open AI Models (https://digg.com/tech/mktzoljx)
  3. Tech Leaders Defend Open-Weight AI Models From US Crackdown (https://hyper.ai/en/stories/9c316e3da9c9449b7d66c38ae923c773)
  4. Moonshot AI accessed Nvidia's chips despite Chinese export ban, White House official says (https://www.cnbc.com/2026/07/23/moonshot-kimi-nvidia-ai-chips-export-ban.html)
  5. OpenAI and Anthropic did not sign the letter (https://www.cnbc.com/2026/06/08/openai-confidentially-files-for-ipo-prepping-wall-street-for-ai-debut.html)
  6. Microsoft, NVIDIA, Meta, IBM, Palantir and more released a joint letter warning Washington not to kill open-weight models (https://www.reddit.com/r/singularity/comments/1v5ahji/microsoft_nvidia_meta_ibm_palantir_and_more)