Accelerator · San Francisco, California, United States
a16z speedrun
Andreessen Horowitz's 12-week in-person residency in San Francisco for very early teams. It invests US$500k for 10% on a SAFE upfront, with up to US$500k more in the next qualifying round.
Open · closes 1 Nov 2026 Run by Andreessen Horowitz
Verified 18 October 2026 · From the programme's own pages
Terms
- Funding
- US$500,000 US$500k for 10% upfront on a SAFE, plus up to US$500k more in the next qualifying round (US$2M or more) within 18 months
- Instrument
- SAFE
- Equity taken
- 10%
- Programme fee
- not published
- Duration
- 12 weeks
- Cohort size
- not published
- Cohorts
- 2 a year
- Delivery
- In person
- Stages
- Idea, pre-seed
- Sectors
- Sector-agnostic
- Open to founders from
- not published
- Perks
-
- More than US$10M in partner credits from 200+ partners
- Introductions through the a16z talent network
Recent residencies had 70 to 80 companies. a16z asks for pro rata rights; the standard deal has no board seat. Applying is free.
Application dates
Open · closes 1 Nov 2026SR008
SR008: applications opened 12 October 2026 and close 1 November 2026; the programme starts 1 February 2027 and demo day is 13 April 2027.
Usual timing: Applications received after 1 November 2026 roll into SR009, which starts in late July 2027 with demo day on 5 October 2027.
Who can apply
- Solo founders can apply, though multi-founder teams are generally preferred
- A technical cofounder or equivalent expertise is usually expected
- Incorporation is not required to apply
- Stage: idea, pre-seed
What founders should check
- It takes 10% equity, and its standard offer is US$500,000. Work out what that stake costs you at your next round before you sign.
- It does not publish a fee. Ask whether you pay for desks, services or the programme itself.
- It runs in person in San Francisco. Plan to be there for the length of the programme.
- Applications are open until 1 November 2026. That is less than a month away, so start the form now.
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