Overview
- GPT‑5.4 is rolling out across ChatGPT, the API, and Codex, with GPT‑5.4 Thinking for Plus, Team, and Pro users and a pricier Pro variant for Pro and Enterprise.
- OpenAI’s first mainline model with native computer use can issue keyboard and mouse commands from screenshots and write code to operate apps.
- The model supports up to a one‑million‑token context window and introduces tool search to cut token usage in large tool ecosystems.
- OpenAI claims higher factuality versus GPT‑5.2, with 33% fewer false individual claims and 18% fewer errors, and top scores on OSWorld‑Verified, WebArena Verified, and APEX‑Agents.
- Earlier this week, GPT‑5.3 Instant became ChatGPT’s default with reduced refusals and lower hallucination rates, while GPT‑5.2 remains in a legacy picker until June 3, 2026.