OpenAI's GPT-5.4 ships with stronger coding, computer use

GPT-5.4 feels less like a raw intelligence leap and more like OpenAI hardening the agent loop. The company is betting that the next moat is controllable execution across tools, not just benchmark wins in a chat box.

• –Tool search is the sleeper feature: OpenAI says it cut token usage by 47% in a large MCP Atlas test while keeping accuracy flat, which is exactly the kind of efficiency win API teams care about.
• –Native computer use is the real unlock for builders; OpenAI says GPT-5.4 hits 75% on OSWorld-Verified, edging past the 72.4% human baseline they report, and improves browser/screenshot handling enough to make desktop agents feel more plausible.
• –Interruptible thinking turns long runs into a live collaboration session instead of a restart-prone black box, which is the user experience change people will feel first.
• –The 1.05M-token context window plus stronger coding and visual perception make it better suited for spreadsheets, docs, and multi-step web workflows.
• –For teams comparing Claude Code, Cursor, and OpenAI's stack, GPT-5.4 is a sharp reminder that model quality and workflow integration are converging into one product decision.