GPT-5.4 Thinking Comes to ChatGPT
CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins91% CONFIDENCEOverall confidence: 91%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterOpenAI's[1][2][3] own model release notes date this entry March 5, 2026
OpenAI brings GPT-5.4 Thinking to ChatGPT, a frontier model combining GPT-5.3-Codex's coding with better work across tools, documents and spreadsheets.
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