
a16z Speedrun
Andreessen Horowitz's startup accelerator program.
About
Speedrun is a highly competitive startup accelerator program launched by Andreessen Horowitz (a16z) in 2023. It runs for approximately 12 weeks in San Francisco, with two cohorts per year, accepting around 50-70 startups per cohort. The program invests up to $1 million into each company, typically $500,000 upfront for 10% equity via a SAFE note, with an additional $500,000 upon raising a subsequent round within 18 months.
Key facts
- Website
- a16zspeedrun.com
- Type
- Accelerator
- Headquarters
- San Francisco, USA
- Portfolio companies
- 20
- Stages
- Seed
- Cheque size
- $1M to $32M
- Sector focus
- TechnologyStartups
Recent investments
| Date | Company | Round | Amount |
|---|---|---|---|
| 12 Oct 2026 | Loops | Seed | $4M |
| 29 Apr 2026 | Dex | Seed | $5M |
| 10 Mar 2026 | Anchr | Seed | $6M |
| 2 Mar 2026 | Antihero Studios | Seed | $5M |
| 3 Feb 2026 | Taxnova | Pre-Seed | $1M |
| 15 Dec 2025 | First Voyage | Seed | $3M |
| 11 Dec 2025 | Straia | Seed | $1M |
| 11 Dec 2025 | Runware | Series A | $50M |
| 28 Oct 2025 | SweatPals | Seed | $12M |
| 26 Sept 2025 | Nilo Technologies | Seed | $4M |
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Frequently asked
What companies has a16z Speedrun invested in?
a16z Speedrun has invested in Loops, Dex, Anchr, Antihero Studios, Taxnova and 15 more.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for a16z Speedrun


