Y Combinator turned a sports arena into AI's biggest pep rally

Y Combinator transformed the Chase Center into the site of its 2026 Startup School, turning a professional sports arena into a massive hub for AI founders. More than 6,000 attendees gathered for the two-day event, which featured appearances from industry leaders including Sam Altman, Jensen Huang, and Alexandr Wang. The scale of this year's gathering was three times larger than previous iterations, reflecting the intense focus on AI within the current startup ecosystem.

Inside the venue, the atmosphere resembled a production, complete with light-up tunnels for speakers and specialized breakout zones. Executives offered incentives to the crowd, such as Meta credits and subscriptions for AI tools, as part of their engagement with potential founders. The programming included research symposiums and interactive sessions, such as an office hours simulator, designed to bridge the gap between YC leadership and participants.

While the event generated significant attention, it also drew reactions online. Observers pointed to the intensity and scale of the gathering, with some comparing the atmosphere to a large-scale convention or, as one attendee noted, a megachurch of industry growth. These characterizations fueled debate on social platforms about whether such large events align with Y Combinator's historical identity of selectivity.

Company leadership defended the decision to expand. Representatives stated that the intention behind the event was never to maintain scarcity, but rather to provide a space for the growing number of people who are building within the AI field. They characterized the rental of a major arena as a logical step to accommodate the actual demand from the technical community.