Cursor Isn't Just Writing Code Anymore: Secret Project Sand Wants Your Inbox
On July 9, The Information dropped a scoop.
Cursor — the company that blew up thanks to its AI code editor — is secretly building a general-purpose AI agent called Sand. Not for programmers writing code. For regular office people getting work done.
Replying to emails, managing texts, organizing spreadsheets, plus engineering-related tasks. A universal office assistant.
"Sand is Cursor's first product aimed at regular office workers, not programmers." — Sources familiar with the project
Taking on Two Giants
Sand's targets are clear: Anthropic's Claude Cowork, and OpenAI's freshly launched ChatGPT Work.
The timing is deliberate — OpenAI announced ChatGPT Work on July 10, and Anthropic rolled Cowork out to mobile and web just two days earlier. Cursor's leak lands right in the middle, like it's grabbing position before the wave crests.
A Massive Deal Looms Behind It
Cursor started leasing compute from SpaceXAI (formerly xAI) back in April. Then SpaceX floated a $60 billion all-stock acquisition of Cursor, expected to close in Q3.
That deal puts a question mark over Sand's future. Cursor's MO is to dogfood internally before deciding whether to ship, and a pending acquisition could reshuffle the product roadmap. Whether Sand ever sees a public launch is still unknown.
The Valuation Rocket
Cursor's valuation curve over the past year:
- May 2025: $9B
- 6 months later: $29.3B
- March 2026: Seeking $50B
A code editor company went from $9B to $50B in a year. But coding tools have a ceiling — Sand is aimed at the non-programmer market. 40,000 companies use Cursor, but the global office worker population dwarfs the developer count.
How Cursor Got a Seat at This Table
Rewind a bit. Anthropic cut off model licensing to SpaceXAI, leaving SpaceXAI far behind in the code tools race. So SpaceXAI pivoted to Cursor — they co-launched Grok 4.5, and now Cursor is pushing into the office scene.
Anthropic went from rival to inadvertent matchmaker — by cutting supply, it pushed Cursor and SpaceXAI into each other's arms.
Whether Sand ships is anyone's guess. Internal rollout began in late June, with employees as guinea pigs. Getting to a public launch depends on how the acquisition lands.
But the signal is already out: the boundary of coding tools is breaking open. Whoever reaches into the other's territory first holds one more card.