{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-03-05-gpt-5-4/","md":"https://postcutoff.com/e/2026-03-05-gpt-5-4/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":"2026-03-05-gpt-5-4","date":"2026-03-05","date_precision":"day","short_title":"OpenAI releases GPT-5.4 with native computer use","deck":null,"takeaway":"GPT-5.4 (March 5, 2026) unified GPT-5.3-Codex's coding strengths with general reasoning and built-in computer use, scoring 75% on OSWorld-Verified — above the 72.4% human baseline — with a 1.05M-token context; mini and nano versions followed on March 17.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Introducing GPT-5.4 (OpenAI)","url":"https://openai.com/index/introducing-gpt-5-4/","type":"official","group":"primary","domain":"openai.com"},{"n":2,"title":"GPT-5.4 model docs (OpenAI API)","url":"https://developers.openai.com/api/docs/models/gpt-5.4","type":"docs","group":"primary","domain":"developers.openai.com"},{"n":3,"title":"OpenRouter: GPT-5.4","url":"https://openrouter.ai/openai/gpt-5.4","type":"docs","group":"primary","domain":"openrouter.ai"},{"n":4,"title":"Cybersecurity News: OpenAI launches GPT-5.4","url":"https://cybersecuritynews.com/gpt-5-4-launched/","type":"press","group":"press","domain":"cybersecuritynews.com"},{"n":5,"title":"Wikipedia: GPT-5.4","url":"https://en.wikipedia.org/wiki/GPT-5.4","type":"discussion","group":"reactions","domain":"en.wikipedia.org"}],"official":3,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"],"title":"OpenAI releases GPT-5.4 with native computer use","summary":"GPT-5.4 (March 5, 2026) unified GPT-5.3-Codex's coding strengths with general reasoning and built-in computer use, scoring 75% on OSWorld-Verified — above the 72.4% human baseline — with a 1.05M-token context; mini and nano versions followed on March 17.","key_facts":["GPT-5.4 Thinking and GPT-5.4 Pro: March 5, 2026 in ChatGPT, API and Codex","GPT-5.4 mini (also for free tier) and GPT-5.4 nano (API only): March 17, 2026","OSWorld-Verified: 75% vs 47.3% for GPT-5.2 and 72.4% average human","OpenAI: 33% fewer factual errors than GPT-5.2","API: $2.50 input / $15 output per 1M tokens; cache read $0.25; input doubles to $5 above 272K tokens","Context window 1,050,000 tokens; up to 128K output tokens","Critics noted mini/nano API prices were about four times higher than GPT-5 equivalents"],"key_numbers":[],"tags":["llm","gpt-5.4","computer-use","reasoning","coding"],"science":null,"body_md":"## What happened\n\nOpenAI released GPT-5.4 as a single model combining reasoning, coding and agentic workflows, including native computer use (reading screenshots,\nclicking, typing, navigating apps), and improved deep research.\n\n## Why it matters\n\nFirst OpenAI mainline model to beat the human baseline on OSWorld-Verified, marking computer-use agents as a mainstream capability.","disputed":[],"related":[{"id":"2026-04-23-gpt-5-5","url":"https://postcutoff.com/e/2026-04-23-gpt-5-5/","date":"2026-04-23","date_precision":"day","short_title":"OpenAI releases GPT-5.5 (codename Spud)","deck":null,"takeaway":"GPT-5.5 was OpenAI's flagship for most of Q2 2026 and the base for its cyber-defense strategy; its Instant variant brought the generation to free users.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":5,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["OpenAI"]},{"id":"2026-02-05-gpt-5-3-codex","url":"https://postcutoff.com/e/2026-02-05-gpt-5-3-codex/","date":"2026-02-05","date_precision":"day","short_title":"OpenAI releases GPT-5.3-Codex, a model 'instrumental in creating itself'","deck":null,"takeaway":"OpenAI's claim that the model helped build itself is an early public marker of AI-accelerated AI development; its capabilities were folded into GPT-5.4 a month later.","category":"agents","category_label":"Agents","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"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-5-4-native-computer"}