a16z Speedrun
Andreessen Horowitz early-stage accelerator and investment programme; co-invested in Dex.
Last refreshed: 1 May 2026 · Appears in 1 active topic
How does a16z Speedrun help early-stage founders access Andreessen Horowitz's network?
Timeline for a16z Speedrun
Co-invested in Dex $5.3m seed round
UK Startups and Innovation: Dex closes $5.3m matching ML talent- What is a16z Speedrun and how is it different from the main a16z fund?
- a16z Speedrun is Andreessen Horowitz's pre-seed accelerator, launched in 2023. It invests $750,000 in early-stage gaming and consumer-AI startups, offering a16z's network and brand, while the main fund deploys much larger cheques at Series A and beyond.Source: a16z public record
- Why did a16z Speedrun invest in Dex?
- a16z Speedrun participated in Dex's $5.3m seed in April 2026. Dex's AI/ML talent matching for AI-native companies like Granola, Synthesia and ElevenLabs sits at the intersection of AI tooling and B2B, sectors aligned with a16z's broader portfolio.
- How does a company get into a16z Speedrun?
- a16z Speedrun runs cohort applications for very early-stage gaming and consumer-AI founders. Selected companies receive $750,000 and intensive support, with the expectation of raising from a16z or top-tier VCs after the programme.Source: a16z public record
Background
a16z Speedrun is an accelerator programme run by Andreessen Horowitz (a16z), the US venture capital firm. Unlike a16z's main fund, which deploys hundreds of millions per company, Speedrun is a pre-seed accelerator investing $750,000 in very early-stage companies working in gaming, consumer AI and the technologies that underpin interactive experiences. The programme runs cohorts of companies through an intensive period of product and fundraising support, with the expectation that graduates go on to raise from a16z or other top-tier VCs.
a16z Speedrun was launched in 2023 as a16z's entry into the accelerator format. It competes with Y Combinator for the earliest-stage bets in consumer-AI and gaming, two areas where a16z has made large growth investments (Roblox, Discord, Figma). By entering at pre-seed via Speedrun, the firm can build relationships with founders years before they are large enough to absorb a main fund cheque. For founders, Speedrun offers a16z's brand signal, network and portfolio of operating companies as customers.
a16z Speedrun participated in Dex's $5.3m seed round in April 2026 alongside Notion Capital, Concept Ventures and OpenAI-affiliated angels. Dex is an AI/ML talent matching platform, and Speedrun's participation signals the programme's expansion beyond strictly gaming and consumer-AI founders into adjacent AI-native B2B categories, consistent with a16z's broader portfolio direction toward AI infrastructure and tooling.