OpenAI Cuts Cursor Off: The Musk Feud Gets Expensive

OpenAI Smells Blood: Musk's Merger Cost Him

OpenAI has cut off API access for Cursor, the AI coding assistant widely used by developers, following the completion of SpaceX's merger with xAI — a move that signals the Sam Altman–Elon Musk feud has crossed from public theatrics into operational warfare, according to Yahoo Finance.

Cursor, which had built significant portions of its product on OpenAI's infrastructure, now faces an abrupt infrastructure crisis with no transition period announced. The timing is not incidental: the access termination came directly after the SpaceX-xAI merger consolidated Musk's AI assets into a single entity that competes directly with OpenAI across enterprise, developer, and consumer markets.

The decision marks a significant escalation. What began as public sparring between Altman and Musk — legal filings, social media volleys, competing fundraising rounds — has now reached the level of platform denial, using API access as leverage the way states use export controls. Developers who built workflows around Cursor's OpenAI integration are the collateral damage.

For the broader AI industry, the signal is uncomfortable: infrastructure that looked like utility is now geopolitical. Any tool sitting on a single foundation model's API is exposed to the same risk. Microsoft, which backs OpenAI, and Nvidia, whose chips power both sides, will be watching the fallout carefully.

The feud, it turns out, has a balance sheet.

*— Isla Camilleri, Global Affairs & Lifestyle Editor*