Apple is suing OpenAI, accusing it of stealing secrets about unreleased products by poaching Apple staff — a sign the AI race is turning nasty and legally messy.

• Apple says OpenAI ran a coordinated campaign to grab drawings, components, and specs for unreleased Apple devices.
• More than 400 former Apple workers now work at OpenAI, lured by stock options ahead of a planned OpenAI IPO.
• Named in the suit: OpenAI hardware chief Tang Tan, a former top Apple product design VP, plus a former engineer accused of downloading confidential files on his way out.
• Apple claims OpenAI coached departing staff to hide where they were going and dodge the quick walk-out that cuts off access to secrets.
• Apple wants OpenAI to stop, destroy any stolen material, and redesign upcoming products — hard demands to actually enforce.

Outlook: This heads toward a jury trial while both race to build AI hardware; expect OpenAI to push back hard, especially with its IPO looming.