Peter Steinberger, creator of popular open-source artificial intelligence program OpenClaw, will be joining OpenAI Inc. to help bolster the ChatGPT developer’s product offerings.

Sources allege the Defense Department experimented with Microsoft’s version of OpenAI technology before the ChatGPT-maker lifted its prohibition on military applications.

In keeping with its recently accelerated release cadence, OpenAI has shipped GPT-5.4 (including GPT-5.4 Thinking and GPT-5.4 Pro). This update comes at a critical time, as recent events have led some vocal users to abandon ship for competing products and models from Anthropic and Google.

OpenAI has agreed to buy Promptfoo, a startup that enables large businesses to find and fix security issues in artificial intelligence models during their development, part of a push to help corporate customers reduce possible risks from deploying AI software.

OpenAI CEO Sam Altman unveiled a reworked agreement with the Pentagon Monday night governing the Defense Department’s use of its AI services, which he says provides stronger guarantees that the milita

OpenAI marked the grand opening its new office in downtown Bellevue, Wash., its largest outside of San Francisco, with room to grow to 1,400 employees.

A fight over Pentagon contracts shows how the leaders of Silicon Valley’s two most important A.I. start-ups are feuding over the future of the tech industry.

OpenAI will now supply its technology to the military for use in classified settings, the sorts that may involve wartime decisions and intelligence-gathering—an agreement, many legal experts told me,

The artificial intelligence model you've been using to write your emails and offer dating advice has officially struck a deal with the Pentagon.

OpenAI’s Codex Security enters research preview, aiming to help teams find, validate, and patch code vulnerabilities with less noise.