Anysphere is the San Francisco company behind Cursor, the AI-first code editor whose agent mode turns natural-language instructions into multi-file edits, test runs and fixes across an entire codebase. Founded in 2022 by four MIT students — Michael Truell (CEO), Sualeh Asif, Arvid Lunnemark and Aman Sanger — it began as a fork of VS Code and grew into one of the fastest-scaling software products on record, later shipping Composer, its own frontier-level coding model.

The growth has been extraordinary: from roughly $100M in annualized revenue in early 2025 to a reported ~$4B by mid-2026, about three-quarters of it from enterprise. That ramp pulled its valuation from a $2.6B Series B in 2024 to a $29.3B Series D in November 2025, co-led by Accel and Coatue.

In 2026 the story turned on an unusual deal: SpaceX took exclusive collaboration rights plus an option to buy the company, and in June 2026 agreed to acquire Anysphere outright in an all-stock transaction valued at about $60B — the largest acquisition of a venture-backed startup on record — with closing expected later in the year pending regulatory approval. Backers along the way have included Thrive Capital, Andreessen Horowitz, Nvidia and the OpenAI Startup Fund.