by Andreessen Horowitz
Top US accelerator program backed by a major venture platform and operator network.
Visit ProgramStartup accelerator with seed investment and intensive mentor support
Seed check with follow-on access
Program investment terms by batch
8-12 weeks
Multiple cohorts/year
Periodic
Batch specific
United States
United States
2/14/2026
a16z Speedrun is an intensive US accelerator that combines early capital with hands-on support from experienced builders and investors. Its platform signal and mentor density make it a high-leverage path for ambitious early teams.
Tight feedback loops with experienced operators and access to a large venture platform.
High-velocity founders building early-stage software products with venture-scale ambition.
Strong brand signal, concentrated mentorship, and high-quality investor access from day zero.
Source: Andreessen Horowitz
Last verified: February 14, 2026
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