{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2024-05-13-gpt-4o/","md":"https://postcutoff.com/e/2024-05-13-gpt-4o/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":"2024-05-13-gpt-4o","date":"2024-05-13","date_precision":"day","short_title":"OpenAI launches GPT-4o, a natively multimodal 'omni' model","deck":null,"takeaway":"GPT-4o reasoned natively across text, audio and vision in real time, responding to speech in as little as 232 ms, and brought GPT-4-level intelligence to free ChatGPT users.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Hello GPT-4o (OpenAI)","url":"https://openai.com/index/hello-gpt-4o/","type":"official","group":"primary","domain":"openai.com"},{"n":2,"title":"GPT-4o System Card (OpenAI)","url":"https://openai.com/index/gpt-4o-system-card/","type":"docs","group":"primary","domain":"openai.com"}],"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"],"title":"OpenAI launches GPT-4o, a natively multimodal 'omni' model","summary":"GPT-4o reasoned natively across text, audio and vision in real time, responding to speech in as little as 232 ms, and brought GPT-4-level intelligence to free ChatGPT users.","key_facts":["Announced 13 May 2024","Audio response latency as low as 232 ms, ~320 ms on average","Single end-to-end model for text, vision and audio","Available to free ChatGPT users; half the API price of GPT-4 Turbo","Advanced Voice Mode rolled out later in 2024"],"key_numbers":[],"tags":["llm","multimodal","voice","gpt"],"science":null,"body_md":"## What happened\n\nOpenAI demoed a conversational assistant that could hear, see and speak with human-like latency and emotional expressiveness.\n\n## Why it matters\n\nMade natural voice interaction with AI mainstream and set the standard for omni-modal assistants.","disputed":[],"related":[{"id":"2024-09-12-openai-o1","url":"https://postcutoff.com/e/2024-09-12-openai-o1/","date":"2024-09-12","date_precision":"day","short_title":"OpenAI o1: reasoning models trained with reinforcement learning","deck":null,"takeaway":"Opened the 'reasoning model' era and a new scaling axis (test-time compute); every major lab followed within months.","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-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"]}],"people":[],"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/openai-gpt-4o-natively"}