AI Open Weights Letter Signatories Surge 208% to 77 with SpaceX Joining

Support for open-weight AI models expands significantly as signatories rise from 25 to 77. SpaceX officially joins the coalition, while Anthropic remains absent from the list.

Woofun AI reports that the open letter advocating for "Open Weights and U.S. AI Leadership" has expanded its roster of signatories from 25 to 77 institutions. The coalition includes major technology firms such as NVIDIA, Microsoft, and Meta, with SpaceX emerging as the latest notable addition.

The petition urges the U.S. government to refrain from prematurely restricting downloadable and self-deployable open-weight models. It further requests a clear distinction between legitimate model distillation and illicit extraction. While Elon Musk previously expressed support via social media, SpaceX is now formally listed. Anthropic continues to remain absent from the signatory list.