a16z speedrun companies, by cohort
a16z speedrun is a startup accelerator run by Andreessen Horowitz (a16z), organized in numbered cohorts.
321 companies and 639 founders across 7 cohorts (SR001 to SR007). Data as of Nov 13, 2026. SR007 Demo Day was Oct 6, 2026.
Cohorts
SR007
79 companies · 172 founders
Demo Day Oct 6, 2026
Explore SR007SR006
59 companies · 125 founders
Explore SR006SR005
59 companies · 108 founders
Explore SR005SR004
42 companies · 84 founders
Explore SR004SR003
32 companies · 66 founders
Explore SR003SR002
25 companies · 47 founders
Explore SR002SR001
25 companies · 37 founders
Explore SR001
More public data
About this data
We list facts from a16z speedrun's public directory: names, websites, locations, team sizes, and founders. Company descriptions stay on the source; each company links to its original page.
While a cohort is still filling, we check its roster every day, and each page shows the date of the last check. Companies that drop off the directory drop off the roster here too.
Profiles marked as GPAgent's are our own fund-neutral summaries, written from public information. No fund's scores, notes, or pipeline go into them.
Source: speedrun.a16z.com (opens in a new tab) GPAgent is not affiliated with Andreessen Horowitz or a16z speedrun.
Score every cohort against your own thesis
GPAgent's sourcing agent reads every company in a cohort, scores each one against your fund's thesis in a private workspace, and lines up the founders worth meeting before Demo Day. You decide who to contact. Your scores, notes, and pipeline never appear on these pages.
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