
a16z
Venture capital firm founded in 2009 that also runs speedrun, a twelve-week in-person accelerator in San Francisco open to founders worldwide, and the Alpha Fellowship for students and recent graduates.
a16z at a glance
| Established | 2009 |
|---|---|
| Address | 2865 Sand Hill Road, Suite 101, Menlo Park, CA 94025, United States |
| Programmes | 5 standing programmes · 1 open call right now |
| Stages supported | Idea, Prototype, MVP, Early revenue, Growth |
| Equity | 0 of 3 programmes that state a policy take no equity |
| Official website | a16z.com |
| menlopark-info@a16z.com |
Programs by a16z
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Which a16z programme fits you
5 programmes compared by who they are for, the stage they accept, how long they run and what they cost.
By stage
- Idea
- speedrun, Alpha Fellowship by speedrun – Founder Track, Alpha Fellowship by speedrun – Talent Track
- Prototype
- speedrun
- MVP
- speedrun, a16z venture funds
- Early revenue
- a16z venture funds
- Growth
- a16z venture funds
| Programme | Best for | Stage | Duration | Format | Cost |
|---|---|---|---|---|---|
| speedrun | Early-stage founders from anywhere, including India, who can be in San Francisco for twelve weeks | Idea – MVP | 12 weeks | In person | Takes equity |
| Alpha Fellowship by speedrun – Founder TrackWith EO Ventures | Technical students and recent graduates with no company, idea or team yet | Idea | 8 weeks | In person | Takes equity |
| Alpha Fellowship by speedrun – Talent TrackWith EO Ventures | Technical students and recent graduates who want an engineering role at a startup | Idea | 4 weeks | In person | — |
| a16z Build | Founders and operators looking for a peer community | — | — | — | — |
| a16z venture funds | Technology companies from seed to growth stage | MVP – Growth | — | — | Takes equity |
Track record
What a16z reports about its portfolio.
These are a16z's own figures about speedrun, not independently checked, and its two pages give different counts. The firm's overall portfolio size is not stated on the pages we read, so we do not give one.
All figures self-reported — a16z.com, as of Oct 2026.
Programmes they run
Standing programmes at a16z, separate from the funding calls above.
Speedrun and the Alpha Fellowship both take equity and are held in person in San Francisco. Check each programme's page for its current dates and terms.
speedrun
AcceleratorA twelve-week, in-person accelerator in San Francisco, run twice a year, in which a16z invests in each selected company.
Best for: Early-stage founders from anywhere, including India, who can be in San Francisco for twelve weeks
- Idea – MVP
- 12 weeks
- In person
- Takes equity
What you get, who can apply and how to applyHide details
speedrun is a16z's accelerator, run by its speedrun team. It is held in person in San Francisco for twelve intensive weeks, and the firm runs two cohorts a year. The next cohort, SR008, runs from late January to April 2027.
What you get
- An investment from a16z through a SAFE, with a second investment tied to your next funding round
- Cloud, AI and software credits from partners, and priority access to model providers, app stores and social platforms
- Access to a network of executives and decision-makers at more than two thousand companies
- A Global Founders Program with hands-on guidance on banking, visas and relocation, and a community of other international founders
Who can apply
- Early-stage founders from all backgrounds and from around the world; India is among the countries it lists
- You must be able to attend on site in San Francisco for the full twelve weeks
How selection works: Applications are reviewed on a rolling basis, usually within four to six weeks. Speedrun describes itself as extremely selective, with an acceptance rate lower than 0.4 percent. Recent cohorts have had between 60 and 70 teams, with no fixed minimum or maximum.
How to apply: Founders apply directly through the application form on the speedrun site. Applications that come in between cohorts are considered for the next one.
An eight-week, in-person fellowship in San Francisco for students and recent graduates who want to start a company before they have an entity, idea or team.
Best for: Technical students and recent graduates with no company, idea or team yet
- Idea
- 8 weeks
- In person
- Takes equity
With EO Ventures
What you get, who can apply and how to applyHide details
The Founder Track is the company-building half of the Alpha Fellowship by speedrun. It backs students and recent graduates before they have an entity, an idea or a team. It is run by the speedrun team in partnership with EO Ventures, in person in San Francisco from January 11 to March 5. Its application is separate from the speedrun application.
What you get
- An investment through a SAFE, with a second investment tied to your next funding round
- Cloud, AI and software credits from partners, and priority access to model providers, app stores and social platforms
- Priority consideration for speedrun, which the programme page also describes as an automatic final interview for speedrun
Who can apply
- Highly technical students, dropouts and recent graduates
- You apply as an individual
- The page states the graduation window two ways, within one year and within three years, so check the current page. It states no nationality or visa rule
How selection works: Selected applicants complete a series of live interviews.
How to apply: Fill in the Alpha application form on the speedrun site. The page lists a deadline of October 11 with no year, and also a banner saying second-cohort applications open in September 2026, so confirm the current dates there.
A four-week, in-person embed in San Francisco for technical students and recent graduates who want a software engineering role at a speedrun portfolio startup.
Best for: Technical students and recent graduates who want an engineering role at a startup
- Idea
- 4 weeks
- In person
With EO Ventures
What you get, who can apply and how to applyHide details
The Talent Track is the other half of the Alpha Fellowship by speedrun, for people who would rather join a startup than start one. Fellows spend four weeks, from February 8 to March 5, embedded in the speedrun community in San Francisco, meet portfolio startups, and can land a role during the fellowship. It is run by the speedrun team in partnership with EO Ventures.
Who can apply
- Technical students and recent graduates, within three years of graduating
- The Alpha page states no nationality or visa rule
How to apply: Use the same Alpha application form as the Founder Track. The programme says you can apply to both tracks and the team will help you decide which path fits.
a16z Build
ProgrammeA community and dinner series for founders and operators figuring out their next company, collaborator or chapter, with peer-led groups in emerging disciplines.
Best for: Founders and operators looking for a peer community
What you get, who can apply and how to applyHide details
a16z Build is a community and dinner series for founders and operators who are working out what to do next. It also runs peer-led communities for builders and operators in emerging disciplines. Some of these groups list applications as open and others only keep an interest list.
How to apply: Apply or join an interest list through the a16z Build site.
a16z's own funds, which invest from seed through growth in technology companies across AI, bio and healthcare, consumer, crypto, enterprise, fintech, games, infrastructure and American dynamism.
Best for: Technology companies from seed to growth stage
- MVP – Growth
- Takes equity
What you get, who can apply and how to applyHide details
This is a16z's main investing business, separate from its programmes. It says it invests in seed, venture and growth-stage technology companies across AI, bio and healthcare, consumer, crypto, enterprise, fintech, games, infrastructure, and companies building toward American dynamism.
How to approach it: You pitch the firm; you do not enrol. Its site does not publish an application form for the main funds, and it has no India office, so most Indian founders reach it through an introduction or through speedrun.
Incubation tracks
The routes into a16z, and what each one includes.
Speedrun is for early-stage companies. Alpha has two tracks: one for founders and one for people who want to join a startup.
| Track | Type | Space | Includes |
|---|---|---|---|
| speedrunTwelve weeks in person in San Francisco, twice a year. | Acceleration | — | — |
| Alpha Fellowship – Founder TrackEight weeks in person in San Francisco, January 11 to March 5. | Fellowship | — | — |
| Alpha Fellowship – Talent TrackFour weeks in person in San Francisco, February 8 to March 5, placing fellows at speedrun portfolio startups. | Fellowship | — | — |
Support services
Help offered alongside funding and space.
These are the support services speedrun describes. They apply to speedrun participants, not to every company a16z invests in.
Legal & finance
Speedrun's Global Founders Program gives hands-on guidance on banking, visas and relocation for founders from outside the United States.
Market access
Speedrun gives access to a network of executives and decision-makers at more than two thousand companies, plus priority access to model providers, app stores and social platforms.
News
- Inside a16z's new academy: $40M, no grades and proof of workapp.dealroom.co · last month
- a16z creates a $1.1B ‘Machine Age’ fund to ‘accelerate the physical buildout of AI’techcrunch.com · last month
- a16z launches $1.1B Machine Age Fund to back AI infrastructure and hardwarecryptorank.io · last month
- a16z launches $1.1B Machine Age Fund for AI infrastructure and hardwarecryptorank.io · last month
Source: Google News aggregated
How to apply to a16z
Start by checking the location requirement
Both programmes that welcome early founders are in San Francisco and in person. Before you apply, decide whether you can be on site for the whole programme: twelve weeks for speedrun, eight weeks for the Alpha Founder Track, four weeks for the Alpha Talent Track. Speedrun says it welcomes founders from India and offers a Global Founders Program with guidance on banking, visas and relocation.
Choosing the right programme
- Starting a company with no idea, entity or team yet, and a student or recent graduate: Alpha Founder Track.
- A technical student or recent graduate who wants an engineering role at a startup: Alpha Talent Track. You can apply to both Alpha tracks.
- An early-stage company with a product you are building: speedrun.
- Founders and operators looking for a peer community, not funding: a16z Build.
How applications work
Speedrun takes applications directly through a form on its site, reviewed on a rolling basis, usually within four to six weeks. Applications made between cohorts are considered for the next one. Alpha has a separate application and then live interviews. A speedrun application and an Alpha application are two different things.
What to know about the deal
Both speedrun and Alpha invest through a SAFE, which means a16z takes equity. Read the current terms on each programme's page before you apply, because they are the firm's to change.
Check dates before you plan
The Alpha page lists a deadline without a year and also says second-cohort applications open in September 2026. Confirm the live dates on the page. For speedrun, the next cohort is SR008, running from late January to April 2027.
The main funds
a16z's site does not list an application form for its main funds. If you are not applying to a programme, treat a16z as an investor you reach through a warm introduction, not a programme you can enrol in.
About a16z
Andreessen Horowitz, known as a16z, is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. Its main office is listed in Menlo Park, California, and it also runs speedrun, an accelerator, and the Alpha Fellowship for students and recent graduates, both based in San Francisco. It has no office in India, and the programmes open to Indian founders require time on site in the United States.
What a16z invests in
a16z says it invests from seed through venture to growth-stage technology companies. The areas it names are AI, bio and healthcare, consumer, crypto, enterprise, fintech, games, infrastructure, and companies building toward what it calls American dynamism. It takes equity in the companies it backs. Its pages do not publish an application form for its main funds, so founders should not expect a standard "apply" route into them. The one dependable way in that the site describes is its own programmes, covered below.
How the programmes work
The programme most relevant to founders outside the United States is speedrun. It is a twelve-week, in-person programme in San Francisco, run twice a year by a16z's speedrun team. Selected companies receive an investment from a16z in the form of a SAFE, with a second investment tied to the company's next round. Participants also get cloud, AI and software credits from partners, priority access to model providers, app stores and social platforms, and access to a network of executives and decision-makers at more than two thousand companies. The next cohort, called SR008, runs from late January to April 2027, and attendance in San Francisco is required throughout.
The Alpha Fellowship by speedrun is aimed at students and recent graduates who want to start a company before they have an entity, an idea or a team. It is run by the speedrun team in partnership with EO Ventures and has two tracks. The Founder Track is an eight-week, in-person experience in San Francisco from January 11 to March 5. Selected founders receive an investment through a SAFE, partner credits and priority access to platforms, and they get priority consideration for speedrun. The Talent Track is a four-week embed from February 8 to March 5 for technical students and recent graduates who want a software engineering role at a speedrun portfolio startup. You can apply to both tracks, and the Alpha team helps decide which one fits.
a16z Build is a separate, non-funding effort. It describes itself as a community and dinner series for founders and operators who are working out their next company, collaborator or chapter, with peer-led communities for builders and operators in emerging disciplines.
Who can apply from India
Speedrun says it welcomes early-stage founders from all backgrounds and from around the world, and it lists India among the countries its founders come from. Founders from outside the United States can also use its Global Founders Program, which gives hands-on guidance on banking, visas and relocation, along with a community of other international founders.
The condition that matters is location. Speedrun states that the twelve-week in-person component is designed to be immersive, so participants must be able to attend on site in San Francisco. Alpha is also in person in San Francisco. Its pages state no nationality or visa rule for Alpha. If you cannot be in San Francisco for the full length of a programme, neither is a fit for you.
Applications and timing
Speedrun reviews applications on a rolling basis, usually within four to six weeks. Founders apply directly through a form on the speedrun site rather than by introduction. Applications that arrive between cohorts are considered for the next one.
Alpha has its own application, separate from speedrun, followed by a series of live interviews. The Alpha page lists an application deadline of October 11 without printing a year, and the same page carries a banner saying that applications for its second cohort open in September 2026 and inviting early submissions. Because the page is not consistent about the dates, check the Alpha page itself for the current status before you plan around it. Its eligibility window is also stated two ways: the page says graduates within one year in one place and within three years in another.
Scale
These figures are a16z's own and have not been checked independently. Speedrun began in 2023. Its two pages disagree on how many startups it has funded: one says over 200, the other says over 300. The speedrun team says recent cohorts have had between 60 and 70 teams, with no fixed minimum or maximum, and describes its acceptance rate as lower than 0.4 percent. One a16z page says the speedrun community has over 600 founders.
Locations
a16z lists seven offices: Menlo Park, San Francisco, New York City, Washington DC, Santa Monica, Seoul and Tokyo. None is in India. Each office has its own general inbox, and the Menlo Park one is listed in the contact details here. Speedrun cohorts take place in San Francisco.
Get in touch
Send a message to a16z — we'll forward it on your behalf.
Who they work with
Stage
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Notable alumni
Frequently asked questions about a16z
What is a16z?
a16z is a venture capital investor based in Menlo Park, California.
What does a16z do?
Andreessen Horowitz, known as a16z, is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. Its main office is listed in Menlo Park, California, and it also runs speedrun, an accelerator, and the Alpha Fellowship for students and recent graduates, both based in San Francisco.
Where is a16z located?
a16z is located at 2865 Sand Hill Road, Suite 101, Menlo Park, CA 94025, United States.
What programs does a16z run?
a16z currently has 1 open programme: Alpha by a16z speedrun — The Alpha Fellowship. 1 further programme has run in the past.
Is a16z open to applications?
Yes. a16z has 1 open programme right now, including Alpha by a16z speedrun — The Alpha Fellowship. Check each programme's page for its deadline and eligibility.
Which a16z programme should I apply to?
It depends on how far along your startup is. Idea stage: speedrun, Alpha Fellowship by speedrun – Founder Track and Alpha Fellowship by speedrun – Talent Track. Prototype stage: speedrun. MVP stage: speedrun and a16z venture funds. Early revenue stage: a16z venture funds. Growth stage: a16z venture funds. Check the programme's own eligibility before applying — several programmes are sector-specific.
Does a16z take equity?
It depends on the programme. and undefined take no equity, while speedrun, Alpha Fellowship by speedrun – Founder Track and a16z venture funds take equity.
What sectors does a16z support?
a16z works with startups in DeepTech, Fintech, Healthtech, SaaS, Gaming and Media & Entertainment.
What stage of startup does a16z support?
a16z supports startups at the Validation, Early Revenue and Growth stages.
How do I apply to a16z?
Both programmes that welcome early founders are in San Francisco and in person. Before you apply, decide whether you can be on site for the whole programme: twelve weeks for speedrun, eight weeks for the Alpha Founder Track, four weeks for the Alpha Talent Track. Speedrun says it welcomes founders from India and offers a Global Founders Program with guidance on banking, visas and relocation.
When was a16z founded?
a16z was founded in 2009. It is a venture capital investor.
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