a16z Speedrun is a 12-week, in-person startup sprint. It provides up to $1M in funding, $5M+ in credits, 1:1 mentorship, and access to a global founder network—designed to help founders launch fast and level up your startup with a powerful backing.
a16z Speedrun is a 12-week, in-person accelerator from Andreessen Horowitz built for founders who want to move fast. It combines funding, mentorship, and community in a high-energy sprint designed to turn ambitious ideas into scalable companies.
Selected startups receive up to $1 million in investment, more than $5 million in partner credits, and access to the full depth of the a16z network. The real value, though, lies in hands-on guidance from operators and entrepreneurs who have built and scaled category-defining companies. Founders refine their products, shape their go-to-market strategies, and prepare for fundraising with direct support from seasoned mentors.
The program is intentionally immersive. Each cohort gathers in one city—recently Los Angeles and San Francisco—where founders learn, collaborate, and challenge each other. The in-person format creates momentum and accountability, while also building a tight-knit community that lasts long after the program ends.
Throughout the 12 weeks, founders work through product iterations, growth experiments, and storytelling practice. Everything builds toward Demo Day, where startups showcase their progress to top-tier investors and partners. Yet the impact extends beyond those three months: Speedrun alumni join a growing network of builders who continue to exchange knowledge, opportunities, and support.
Open to founders worldwide, from pre-seed to seed stage, Speedrun is a launchpad for ambitious teams and solo founders alike. It’s not just about funding—it’s about velocity, clarity, and a community that helps transform bold ideas into enduring companies.
Our pitch deck template will guide you through the requirements of an Accelerator-ready presentation.
