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 one-sentence statement text verbatim, confirms it is from CAIS, and confirms the presence of the four named signatories (Geoffrey Hinton, Demis Hassabis, Sam Altman, Dario Amodei). However, the source does not explicitly state the total number of signatories as '350+'. The visible list shows approximately 50+ named individuals, but the 'Show more' button indicates there are additional signatories not displayed in the excerpt. The claim specifies 'as of 2023-05' (May 2023), and the source URL is from the CAIS website but does not include a date stamp in the provided excerpt. Without explicit confirmation of the '350+' figure or the May 2023 date in the source text, this cannot be fully confirmed, though the core facts about the statement and key signatories are verified.