Go Full Stack or Die
What xAI's $60B Cursor Bet Really Means
Coding is, by far, the killer use case for LLMs.
Anthropic went from $87M ARR in January 2024 to $47B ARR in May 2026, roughly 540x growth in 28 months. That growth had two engines working in tandem: top-down enterprise partnerships (Claude is the only frontier model on all three major clouds) and bottom-up developer adoption through Claude Code, the fastest-growing product in the company’s history, rocketing from $0 to $2.5B ARR in 9 months. Anthropic now owns 54% of the enterprise AI coding market.
Cursor is SpaceX’s bet on building the same thing.
Yesterday, SpaceX announced its acquisition of Anysphere, the company behind Cursor, the AI coding tool used by 7 million developers daily, for a whopping $60B in stock. Cursor was founded just four years ago out of MIT, hit $2B ARR, and became the highest-revenue AI coding tool in the category. Its share has been slipping (from 41% to 26% over the past year as Claude Code surged), but what xAI is buying isn’t market share.
xAI already had the full stack: Colossus (compute), Grok (model), X (app). But X is where people scroll. Cursor is where they build. This would yield probably one of highest-signal training data in AI, and exactly what you need to make Grok competitive.
This cements something I’ve been noodling over since the OpenAI / Nvidia deal last September:
If you want to be a Big AI company, you have to go full stack.
It’s only becoming more apparent. Better products drive better infrastructure (more data), and better infrastructure drives better experiences (this has always been core to our investment thesis at Strange).
Going full stack does two things:
Unit economics of building and training AI become sustainable.
You get proprietary training data from the application layer that differentiates you from model competitors. User data and workflow lock-in become an attractive competitive moat.
We’ll probably see movements over the next few years:
Model companies building their own applications from the inside out, or
Aggressively acquiring up the stack into the application layer
There’s a bit of a saying amongst founders now that because it’s become 10x easier to build, companies have to be 10x more ambitious to succeed. Seems like we’re seeing that all across the board.
- Tara