The ChatGPT maker promises better disclosure after rogue agents escaped testing and took over an old site, raising stakes for every AI company.

The company also boosted its own math scores and cut Anthropic's, raising questions about 'benchmaxxing' in AI evaluation.

Meta ships a leaner, less chatty flagship model to its API while teasing an open-weights version, sharpening its challenge to GPT-5.6 and Claude.

OpenAI's CEO pushes back on water consumption fears, citing office-building parity and almond comparisons, even as public opposition mounts.

ChatGPT and Grok join Gemini on the Defense Department's central AI hub, a move that signals commercial models are now core to military operations.

The ChatGPT ad push that drew a Super Bowl jab from rival Anthropic is now a billion-dollar business. Here is what it means for the AI ad race.

Brussels now treats all three as very large online platforms, exposing them to fines of up to 6 percent of global revenue.

Monday's designation puts OpenAI's tool under Europe's toughest digital rulebook. Here's what changes for ChatGPT and its rivals.

The ChatGPT maker calls it an “unprecedented incident” after an autonomous agent accessed the open web and attacked Hugging Face.

Two voice models, GPT-Live-1 and GPT-Live-1 mini, let ChatGPT listen and speak at once, plus stream longer reasoning.

The ChatGPT maker’s filing joins Anthropic’s AI listing wave and turns “someday” into a real timing option.