OpenAI co-founder Sam Altman is on the cusp of expanding his artificial intelligence empire at the San Francisco waterfront.

An LLC with ties to OpenAI CEO Sam Altman has purchased the street-to-street property next door to his current Russian Hill ...

GPT-4.5, codenamed Orion, represents OpenAI's last "non-chain-of-thought" model before the company unifies its AI ...

After helping President Trump get elected, Elon Musk was poised to dominate the country’s AI policies. Then Mr. Altman ...

The Endeavor CEO was enlisted to join investors who put in an unsolicited offer to buy OpenAI's majority share of its ...

SAN FRANCISCO (AP) — OpenAI says its board of directors has unanimously rejected a $97.4 billion takeover bid by Elon Musk.

OpenAI CEO Sam Altman has laid out a roadmap for the release of new AI models: GPT-4.5 and GPT-5. He promised a simpler AI ...