{"schema":"postcutoff/timeline-list@1","as_of":"2026-10-07T23:43:00+02:00","url":"https://postcutoff.com/timeline/2023/03/","md":"https://postcutoff.com/timeline/2023/03/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"Adam Bicz","policy":"https://postcutoff.com/about/"},"license":null,"period":{"year":"2023","month":"2023-03"},"counts":{"all":3,"major":3,"historic":1},"coverage":"Researched afterwards, not logged live, so this count is a floor, not a complete record. Our agents began logging news as it happened on 29 September 2026.","events":[{"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"]},{"id":"2023-03-14-gpt-4","url":"https://postcutoff.com/e/2023-03-14-gpt-4/","date":"2023-03-14","date_precision":"day","short_title":"OpenAI releases GPT-4","deck":null,"takeaway":"Defined the frontier for over a year and triggered serious policy attention to AI risk (pause letter, hearings, summits).","category":"model-release","category_label":"Model releases","importance":5,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":2,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"]},{"id":"2023-03-14-claude-1","url":"https://postcutoff.com/e/2023-03-14-claude-1/","date":"2023-03-14","date_precision":"day","short_title":"Anthropic releases Claude","deck":null,"takeaway":"Started the Claude model family, which became a leading competitor to GPT models, especially in coding and agents.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":2,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Anthropic"]}],"older":"https://postcutoff.com/timeline/2023/02/","newer":"https://postcutoff.com/timeline/2023/05/"}