Center for AI Safety (CAIS) — campaign: Statement on AI Risk (May 2023): one-sentence statement 'Mitigating the risk of extinction from AI should be a global priority alongside other societal-scale risks such as pandemics and nuclear war.' Signed by 350+ AI leaders including Geoffery Hinton, Demis Hassabis, Sam Altman, and Dario Amodei.

NoteThe source confirms the core elements of the claim: the exact one-sentence statement, the campaign's association with CAIS, and the presence of all four named signatories (Geoffrey Hinton, Demis Hassabis, Sam Altman, Dario Amodei). However, the source text provided does not explicitly state '350+' signatories. The source shows 'Show more' at the end of the visible signatories list, indicating additional signatories exist beyond what is displayed, but the total count is not stated in the excerpt provided. The claim's temporal marker 'as of 2023-05' cannot be verified from the source text alone, though the source URL and content are consistent with May 2023 timing. The claim is substantially accurate but the specific '350+' figure is unverifiable from this excerpt.