When evaluating founders with abrasive personalities, some VCs apply a specific mental model. As advised by Jason Green of Emergence Capital, if a founder's brilliance is perceived to be 50 times greater than their difficult nature, the investment is still worth making. This provides a framework for backing exceptional but challenging individuals.

Brian Halligan, Sequoia's in-house CEO coach, uses a five-part framework called 'LOCKS' to assess founders: Lovable (can inspire a team), Obsessed (deep founder-market fit), Chip on the shoulder (driven by something to prove), Knowledgeable (domain expert), and Student (a constant learner).

To gauge a founder's drive and potential for greatness, ask if they have ever been in the top 1% of any field, even an esoteric one. This unconventional question serves as a powerful proxy for ambition and the willingness to push through challenges, regardless of their professional background.

Beyond table stakes like hunger and vision, the most successful founders exhibit deep empathy ("people gene"), curiosity, and high emotional intelligence. They are secure, know their weaknesses, and often have a background in team sports, understanding that company building is a team effort.

Ask a founder what they'd do on a Monday morning after they've made a billion dollars and fulfilled all their fantasies. This thought experiment strips away financial incentives and reveals their core drive. An inability to answer suggests they haven't thought beyond the exit.

To assess a founder's learning rate and critical thinking, Khosla intentionally advocates for ideas he disagrees with. This tactic reveals if a founder will blindly accept advice or critically examine it, demonstrating their ability to filter input—a key trait he looks for.

Investor Jason Calacanis outlines his key evaluation criteria for founders. The most lethal combination includes the ability to ship product quickly, an eye for elite design, and a deep, personal obsession with their mission. He notes that skills like marketing can be learned, but these core traits are essential.

A founder deep in the idea maze can articulate not just their current path, but also the alternatives they considered and why they were rejected. This demonstrates a profound understanding of their domain and problem space.

To truly understand a founder, Katelin Holloway bypasses typical pitch questions. She engaged one founder in a conversation about wormholes and the time-space continuum. This abstract dialogue revealed how his brain worked and his core values, giving her conviction in him as a person, not just his idea.