The Idea: In 2022, four MIT students - Michael Truell, Sualeh Asif, Arvid Lunnemark, and Aman Sanger - were obsessed with the same idea: AI was about to change software development forever, and the existing tools weren't pushing the limits. GitHub Copilot felt like a band-aid. They wanted to rebuild the code editor itself, with AI sitting at the centre instead of bolted on as a plugin. None of the four ever finished their MIT degrees - they turned down the usual FAANG offers, raised $125k from Y Combinator, spent nearly a year "wandering in the desert" building mechanical engineering tools, then pivoted hard. They forked Visual Studio Code and rebuilt it from scratch as an AI-native IDE. This was the beginning of Cursor.

The Execution:

• 2022: Truell, Asif, Lunnemark, and Sanger incorporate Anysphere, drop out of MIT, and join the Y Combinator summer batch.
• October 2023: They raise an $8M seed round led by the OpenAI Startup Fund, with angels including former GitHub CEO Nat Friedman and Dropbox co-founder Arash Ferdowsi. Cursor goes public and immediately starts going viral.
• August 2024: Andreessen Horowitz leads a $60M Series A at a $400M valuation, just 10 months after the seed round.
• December 2024 - March 2025: Two back-to-back mega rounds catapult the company - $2.5B Series B and a $900M Series C at a $9B valuation. Cursor crosses 1 million daily users generating close to a billion lines of code per day.
• November 2025: Anysphere closes a $2.3B Series D at a $29.3B valuation co-led by Accel and Coatue, with Google and Nvidia joining the cap table. Annualized revenue crosses $1B - making Cursor the fastest B2B SaaS company in history to hit that milestone.
• April 2026: SpaceX announces it has secured an option to acquire Cursor for $60B later this year, or pay $10B for a deeper partnership. Annualized revenue is now projected to hit $6B by year-end - a 5x jump in 12 months.

The lesson? Don't build a feature where there should be a product. Copilot was a plugin. Cursor was a full editor. By owning the entire surface from day one, the Anysphere team made every AI breakthrough land natively in their product instead of someone else's, and turned a 4-person dorm room project into the fastest-scaling B2B software business ever built.