OpenAI Cuts Ties with Cursor After SpaceX Takes Control, Cites Contract Violations

Key Points

• OpenAI will end model supply to Cursor on Nov. 12, after SpaceX’s $60 B acquisition of the company.
• The AI lab cited past contract violations by Elon Musk’s companies, including the Twitter purchase and xAI conduct.
• OpenAI gave the maximum contractual notice—about 2.5 months—and will not provide its upcoming Astra model to Cursor.
• Cursor’s Grok 4.5, launched with SpaceXAI in July, will become unavailable to users after the shutdown.
• European switching rules protect customers, not suppliers; developers face limited recourse with only a 75‑day notice.
• OpenAI pledged assistance for developers transitioning away, but detailed migration support remains unclear.
• The dispute highlights challenges in AI model licensing when ownership changes through large acquisitions.