Cursor CEO Michael Truell confirmed the two companies have already been jointly training a model on xAI's Colossus supercomputing cluster. That model ships inside both Cursor and something called "Grok Build." You don't co-develop a foundation model as a casual pre-deal exercise. This acquisition was cooking well before the paperwork.
And then it gets complicated. Cursor currently runs models from OpenAI, Anthropic, and Google. Every one of those companies is now being asked to supply models to a tool owned by a direct competitor with its own foundation model ambitions. How long does that arrangement hold?
Meanwhile, every company that built integrations with Cursor, from Shopify to countless internal dev teams, now has a SpaceX dependency they didn't sign up for. Cursor's million-plus daily users chose it partly because it felt independent. Whether that feeling survives under new ownership is something the community is already chewing on loudly.
The consolidation map keeps filling in. Microsoft owns the IDE and the platform. Anthropic has the model developers love. SpaceX/xAI now has the fastest-growing standalone editor, and OpenAI sells models to everyone but doesn't own the surface where developers actually work. That last gap matters. Whoever controls the editor controls what gets suggested, what gets autocompleted, what gets built.
The deal carries a $10 billion termination fee and a $4 billion regulatory termination fee. Expected close Q3 2026. Between now and then, expect the AI labs to seriously reconsider their relationship with Cursor.