{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2025-12-11-gpt-5-2/","md":"https://postcutoff.com/e/2025-12-11-gpt-5-2/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":"2025-12-11-gpt-5-2","date":"2025-12-11","date_precision":"day","short_title":"OpenAI releases GPT-5.2","deck":null,"takeaway":"OpenAI released GPT-5.2 in Instant, Thinking and Pro variants, about three weeks after Gemini 3, reportedly accelerated by an internal 'code red'; it targeted professional knowledge work such as spreadsheets, presentations and long-running multi-step tasks.","category":"model-release","category_label":"Model releases","importance":3,"confidence":"medium","status":{"key":"partly","labels":["Partly confirmed"]},"sources":[{"n":1,"title":"Introducing GPT-5.2 (OpenAI)","url":"https://openai.com/index/introducing-gpt-5-2/","type":"official","group":"primary","domain":"openai.com"},{"n":2,"title":"Update to GPT-5 System Card: GPT-5.2 (OpenAI)","url":"https://openai.com/index/gpt-5-system-card-update-gpt-5-2/","type":"docs","group":"primary","domain":"openai.com"}],"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"],"title":"OpenAI releases GPT-5.2","summary":"OpenAI released GPT-5.2 in Instant, Thinking and Pro variants, about three weeks after Gemini 3, reportedly accelerated by an internal 'code red'; it targeted professional knowledge work such as spreadsheets, presentations and long-running multi-step tasks.","key_facts":["Released 11 December 2025","Variants: GPT-5.2 Instant, Thinking and Pro; GPT-5.2-Codex followed","400K-token context window","API price $1.75 per million input tokens","Succeeded GPT-5.1 (November 2025)"],"key_numbers":[],"tags":["llm","reasoning","gpt"],"science":null,"body_md":"## What happened\n\nOpenAI shipped a rapid point release of GPT-5 focused on professional tasks and agentic reliability.\n\n## Why it matters\n\nIllustrated the compressed release cadence of late 2025, with frontier leadership changing hands within weeks.","disputed":[],"related":[{"id":"2025-11-18-gemini-3","url":"https://postcutoff.com/e/2025-11-18-gemini-3/","date":"2025-11-18","date_precision":"day","short_title":"Google launches Gemini 3","deck":null,"takeaway":"Widely seen as putting Google at the top of the frontier; press reported OpenAI declared an internal 'code red' in response.","category":"model-release","category_label":"Model releases","importance":5,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":5,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Google DeepMind"]},{"id":"2025-08-07-gpt-5","url":"https://postcutoff.com/e/2025-08-07-gpt-5/","date":"2025-08-07","date_precision":"day","short_title":"OpenAI launches GPT-5","deck":null,"takeaway":"Brought reasoning-model capability to hundreds of millions of free users by default.","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":null}