OpenAI Launches GPT-5.4 with Native Computer Use and 1M Token Context Window
OpenAI dropped a significant update on March 5, 2026: GPT-5.4, a model built from the ground up for autonomous agent work. It ships with two things practitioners have been waiting for — native computer-use capabilities and a 1M-token context window in API preview. If you build agents, this changes your architecture options in real ways. What Actually Shipped GPT-5.4 comes in two variants: Standard GPT-5.4 — The default API model with native computer-use support and 1M-token context GPT-5.4 Pro — A higher-performance tier aimed at complex, long-horizon tasks The model is available in ChatGPT, the Codex environment, and the API. Microsoft Foundry integration is also confirmed, meaning enterprise teams using Azure AI Foundry can access it without a separate onboarding. ...