For agents, the value is clearer still: structured JSON output, reusable commands and built-in skills that let models interact with Workspace data and actions without a custom integration layer.

OpenAI unveiled GPT-5.4, its newest reasoning model, alongside a ChatGPT-powered add-in for Microsoft Excel. The tool lets ...

The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some tasks) than its predecessors).

When it comes to computer use, one noticeable improvement OpenAI has recorded is the way GPT-5.4 issues mouse and keyboard ...