{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2023-05-30-cais-statement-ai-risk/","md":"https://postcutoff.com/e/2023-05-30-cais-statement-ai-risk/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2023-05-30-cais-statement-ai-risk","date":"2023-05-30","date_precision":"day","short_title":"Leading AI scientists sign the one-sentence statement on AI extinction risk","deck":null,"takeaway":"Hundreds of AI researchers and executives, including Hinton, Bengio, Altman, Hassabis and Amodei, signed: 'Mitigating the risk of extinction from AI should be a global priority alongside other societal-scale risks such as pandemics and nuclear war.'","category":"policy-safety","category_label":"Policy & safety","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Statement on AI Risk (CAIS)","url":"https://www.safe.ai/work/statement-on-ai-risk","type":"official","group":"primary","domain":"safe.ai"},{"n":2,"title":"Pause Giant AI Experiments: An Open Letter (FLI)","url":"https://futureoflife.org/open-letter/pause-giant-ai-experiments/","type":"official","group":"primary","domain":"futureoflife.org"}],"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Center for AI Safety"],"title":"Leading AI scientists sign the one-sentence statement on AI extinction risk","summary":"Hundreds of AI researchers and executives, including Hinton, Bengio, Altman, Hassabis and Amodei, signed: 'Mitigating the risk of extinction from AI should be a global priority alongside other societal-scale risks such as pandemics and nuclear war.'","key_facts":["Published 30 May 2023 by the Center for AI Safety","Signatories included the CEOs of OpenAI, Google DeepMind and Anthropic","Followed the Future of Life Institute's 22 March 2023 letter calling for a 6-month pause on training models more powerful than GPT-4","Geoffrey Hinton left Google in May 2023 to speak freely about AI risk"],"key_numbers":[],"tags":["safety","x-risk","open-letter"],"science":null,"body_md":"## What happened\n\nA brief joint statement placed AI extinction risk alongside pandemics and nuclear war as a global priority.\n\n## Why it matters\n\nBrought catastrophic AI risk into mainstream policy discourse, paving the way for the Bletchley summit and AI safety institutes.","disputed":[],"related":[{"id":"2023-11-01-bletchley-ai-safety-summit","url":"https://postcutoff.com/e/2023-11-01-bletchley-ai-safety-summit/","date":"2023-11-01","date_precision":"day","short_title":"Bletchley Park AI Safety Summit and the Bletchley Declaration","deck":null,"takeaway":"First intergovernmental agreement on frontier AI risk, and it created the network of national AI safety institutes.","category":"policy-safety","category_label":"Policy & safety","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":2,"official":1,"filed":"2026-09-29","updated":"2026-09-29","orgs":["UK Government"]},{"id":"2023-05-01-hinton-leaves-google","url":"https://postcutoff.com/e/2023-05-01-hinton-leaves-google/","date":"2023-05-01","date_precision":"day","short_title":"Geoffrey Hinton leaves Google so he can speak freely about AI risks","deck":null,"takeaway":"When one of the field's founders publicly switched to warning about it, AI x-risk moved into the mainstream.","category":"policy-safety","category_label":"Policy & safety","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":5,"official":1,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Google"]},{"id":"2023-03-22-fli-pause-giant-ai-experiments","url":"https://postcutoff.com/e/2023-03-22-fli-pause-giant-ai-experiments/","date":"2023-03-22","date_precision":"day","short_title":"Future of Life Institute open letter calls for a 6-month pause on training AI more powerful than GPT-4","deck":null,"takeaway":"It was the first mass-signature call to slow frontier AI, and it framed three years of pause debates.","category":"policy-safety","category_label":"Policy & safety","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":1,"official":1,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Future of Life Institute"]}],"people":[{"id":"demis-hassabis","name":"Demis Hassabis","url":"https://postcutoff.com/person/demis-hassabis/"},{"id":"geoffrey-hinton","name":"Geoffrey Hinton","url":"https://postcutoff.com/person/geoffrey-hinton/"},{"id":"sam-altman","name":"Sam Altman","url":"https://postcutoff.com/person/sam-altman/"},{"id":"yoshua-bengio","name":"Yoshua Bengio","url":"https://postcutoff.com/person/yoshua-bengio/"}],"posts":[],"videos":[],"models":[],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":null,"in_training_data":true},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":null,"in_training_data":true},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":null,"in_training_data":true},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":null,"in_training_data":true}],"short_url":"https://postcutoff.com/s/leading-ai-scientists-sign"}