PeopleofSuperintelligence

Builder

Arvid Lunnemark

Arvid Lunnemark co-founded Anysphere, the company that built Cursor, an AI-native software development environment. He won gold at the International Mathematical Olympiad in 2018 after finishing school in Malmö with top grades. Anysphere started in 2022 with a plan for an encrypted communications platform. Cursor closed a $2.3 billion Series D at a $29.3 billion valuation in November 2025, and Forbes estimates that he holds a 4.5% stake worth at least $1.3 billion. He left Anysphere in October 2025 to start Integrous Research, and he now focuses on research into AI, information security and human freedom.

Photo of Arvid Lunnemark

Timeline

  1. 2018

    A gold medal in mathematics

    In 2018 he graduates from Malmö Borgarskola with top grades and wins gold at the International Mathematical Olympiad.

  2. 2022

    Co-founding Anysphere at MIT

    In 2022 he helps found Anysphere with three co-founders he met at MIT. They first plan an encrypted communications platform.

  3. October 2023

    An $8 million seed round

    In October 2023 Anysphere, which builds Cursor, an AI-native software development environment, announces $8 million in seed funding led by OpenAI’s Startup Fund.

  4. October 2025

    Leaving Anysphere for safer AI

    He leaves Anysphere in October 2025 and starts Integrous Research, a company focused on developing systems for safer AI.

  5. November 2025

    A $29.3 billion valuation

    In November 2025 Cursor closes a $2.3 billion Series D at a $29.3 billion valuation. Forbes estimates that he holds a 4.5% stake worth at least $1.3 billion.

  6. Since 2025

    Research on AI and freedom

    Since 2025 he focuses on research into AI, information security and human freedom.

Sources and credits

Photo: anysphere-messaging.com; Team – Anysphere; creator not stated. License: Not stated by source. Source: anysphere-messaging.com. Cropped to a square and resized. Ask us to remove or replace this photo.

  1. Fick A i allt – nu blir Malmökillen en av Sveriges rikaste 26-åringar - Dagens PS dagensps.se. Checked 14 October 2026.
  2. Sweden – IMO 2018 imo-official.org. Checked 14 October 2026.
  3. Anysphere raises $8M from OpenAI to build an AI-powered IDE | TechCrunch techcrunch.com. Checked 14 October 2026.
  4. Arvid Lunnemark departure from Cursor: AI coding startup loses co-founder entrepreneurloop.com. Checked 14 October 2026.
  5. Four cofounders of popular AI coding tool Cursor are now billionaires forbes.com.au. Checked 14 October 2026.
  6. Cursor (company) - Wikipedia en.wikipedia.org. Checked 14 October 2026.