A single handwritten coding test in 2019 sparked one of venture capital's most successful AI-era investments. Ali Partovi, an investor at Neo, met MIT freshman Michael Truell and asked him to solve a programming challenge by hand. Truell completed it in roughly 15 minutes. Years later, Partovi wrote one of the first checks into Truell's startup, Anysphere, the company behind Cursor, an AI coding editor that has grown into one of the fastest-scaling software businesses in history.

What Makes Cursor's Growth So Unusual?

Cursor's trajectory defies typical enterprise software scaling patterns. The company surpassed $2 billion in annual recurring revenue and reached a valuation approaching $30 billion, making it one of the fastest-scaling software businesses ever recorded. In April 2026, SpaceX signed an option to buy the company for $60 billion, underscoring the tool's strategic importance to major technology companies.

This explosive growth reflects a broader shift in how developers work. AI coding assistants have fundamentally changed the software development workflow, and Cursor emerged as a category leader by focusing on user experience and seamless integration with existing development practices. The company's success demonstrates that the market for AI-powered development tools extends far beyond early adopters.

How Did Early Investors Identify This Opportunity?

The most successful seed investors operate with a different framework than later-stage venture capitalists. Rather than relying on traction metrics and revenue data, seed investors must identify founders, technical insight, and market shifts before they become obvious to the broader industry. Partovi's investment in Anysphere exemplified this approach. He recognized that AI coding tools would reshape how developers work before the market fully understood the category's potential.

Partovi's broader investment portfolio reveals a consistent pattern of backing products that create entirely new user behaviors before those markets fully exist. Beyond Cursor, he invested early in Kalshi, a prediction-market platform that surged during the 2024 election cycle, and Vanta, which helped automate security compliance for startups long before compliance automation became mainstream. Neo's early positions in Cursor and Kalshi are now collectively worth more than $1 billion on paper, according to firm estimates reported by The Wall Street Journal.

What Separates Winning Seed Investors From the Rest?

• Technical Conviction: The best seed investors recognize important technological shifts before most of Silicon Valley fully understands where the market is heading, allowing them to back companies years before meaningful revenue or product validation exists.
• Founder Assessment: Rather than relying on traction metrics, seed investors must evaluate founders' technical abilities, vision, and execution potential at the earliest possible stage, often before a company has proven its business model.
• Category Creation: Successful seed investors back products that create entirely new user behaviors and markets, not just incremental improvements on existing categories, requiring them to imagine demand that doesn't yet exist.

Partovi's investment in Anysphere demonstrates all three principles. He identified a talented founder through a direct technical assessment, recognized that AI would reshape software development before the category fully formed, and backed a product that would eventually create new workflows for millions of developers worldwide.

The broader venture capital landscape reflects this pattern across multiple AI-era categories. Investors who made early bets on frontier AI models, autonomous systems, cybersecurity, and AI infrastructure years before the market went all-in on these sectors have generated some of the decade's most significant returns. These early convictions, made when outcomes were highly speculative, have shaped the next generation of category-defining companies.

Cursor's rise from a seed-stage bet to a $30 billion company illustrates why seed investing remains one of venture capital's highest-leverage activities. The investors who recognize important technological shifts earliest, and back the right founders at the right moment, can generate returns that dwarf later-stage investments. For Partovi and Neo, the handwritten coding test that identified Michael Truell became the foundation for one of the AI era's most valuable software companies.