What a16z speedrun does

a16z speedrun is a 12-week, in-person startup accelerator program operated by Andreessen Horowitz (legal entity: a16z Capital Management, LLC). Launched in 2023 and headquartered in San Francisco with a secondary office in Santa Monica, the program accepts 60–70 companies per cohort twice a year, with an acceptance rate below 0.4%. Since launch it has deployed more than $200M across over 250 startups across cohorts numbered SR001 through at least SR007.

The core offering combines seed capital, non-dilutive vendor credits, and structured mentorship. Each accepted company receives up to $1M total — $500K upfront via a SAFE for 10% equity plus a $500K commitment in the company's next financing round within 18 months — alongside $7M+ in partner credits from AWS, GCP, OpenAI, Anthropic, Microsoft, NVIDIA, Stripe, and Deel via the speedrun Marketplace. The 12-week curriculum covers rapid product development, GTM, fundraising, recruiting, and operational scaling, delivered via in-person keynotes with speakers including Marc Andreessen, Ben Horowitz, Fei-Fei Li (World Labs), Kevin Weil (OpenAI), Tony Xu (DoorDash), Dylan Field (Figma), Guillermo Rauch (Vercel), Henry Ward (Carta), Jeff Lawson (Twilio), and Scott Belsky (Behance). The program operates a Global Founders Program supporting founders from 30+ countries with visa, banking, housing, and relocation logistics, and runs twice-yearly Demo Days presenting portfolio companies to 1,000+ early-stage investors via an online platform and in-person event.

The revenue model is that of a venture accelerator rather than a SaaS or fee-for-service business: founders pay nothing in cash to apply or participate; speedrun takes 10% equity upfront, secures pro rata rights in subsequent rounds, and deploys capital from the parent a16z funds. Distribution to founders occurs through a self-serve online application portal at speedrun.a16z.com; distribution to investors occurs through Demo Day and an investor sign-up platform. Reported alumni outcomes include Sekai ($26M raised), Fundamental Research Labs ($33M Series A), k-ID ($51M), Runware ($50M Series A), Limy ($10M), Clair Health ($11.6M), and Dex (~$1.8M ARR within months of program completion).

Name

a16z speedrun

Legal name

a16z Capital Management, LLC

Website

https://speedrun.a16z.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

251–500 employees

Short description

a16z speedrun is a 12-week, in-person startup accelerator operated by Andreessen Horowitz that invests up to $1M per company for 10% equity, provides $7M+ in partner credits, and serves early-stage founders from 30+ countries through twice-yearly San Francisco cohorts.

Ownership category

akta.pro rank

Product category

Startup Accelerator

akta.pro primary industry

Corporate Accelerators & Startup Programs (FSANAHAD)

Keywords

• Startup accelerator program
• Venture capital services
• Seed-stage investing
• Founder mentorship programs
• Accelerator cohort programs

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Technology or R&D, Infrastructure

Revenue model

1. Equity Investment in Portfolio Companies: a16z speedrun invests $500K upfront for 10% equity in a SAFE in each accepted company, with an additional $500K committed to be invested in the company's next round within 18 months. Total investment up to $1M per company. The accelerator also asks for pro rata rights for subsequent financing rounds.
2. Standard Option Pool Requirement: Accepted companies must set aside an option pool for new employees as part of the deal terms, which the program helps structure as part of company incorporation support.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Core offering

a16z speedrun is a 12-week intensive in-person startup accelerator (with a parallel Global Founders Program for international teams) that invests up to $1M per startup on standardized terms — a $500K SAFE for 10% plus up to $500K in the next round — while providing $7M+ in partner credits, mentorship from a16z partners, and biannual Demo Day access to 1,000+ investors. The offering is aimed at seed-stage tech founders seeking capital, network, and operational support, with a stated acceptance rate below 0.4%.

Product overview

a16z speedrun is a single unified offering — the Speedrun accelerator program operated by Andreessen Horowitz — rather than a platform with separately licensed software modules. The core product is the 12-week in-person startup accelerator (the "speedrun program"), launched in 2023, which has deployed more than $200M to fund over 250 startups through cohorts SR003–SR007, with SR006 starting January 2026 and SR007 running July–October 2026. Surrounding the core accelerator are a set of support offerings: Demo Day (the twice-yearly investor showcase), the Global Founders Program (for international founders needing visa, housing, and banking support), the speedrun Marketplace (which delivers $7M+ in partner credits from AWS, GCP, OpenAI, Anthropic, Microsoft, NVIDIA, Stripe, and Deel), and four named marketing programs (Launch Lab, Brand Lab, Creator Connect, Press Club). A public Speedrun Portfolio / Companies directory (250+ companies including 2weeks, Acceler8, Advocate, Adzap, Agent Astra, Aghanim, Alike, Alpaka Games, Ambiguous, Amdahl, Anchr, AndThen, Antihero Studios, Argu, Artifact, and Atorie) serves as the program's visible company showcase. Together these components form a tightly bundled accelerator experience: cohort admission unlocks the funding terms (up to $1M via $500K-for-10% SAFE plus $500K follow-on), partner credits, mentorship, fundraising prep, and Demo Day access as a single integrated package.

Differentiator

Problem solved

Functional benefit

Products and services

• a16z speedrun Accelerator (12-week in-person program) A 12-week intensive in-person startup accelerator program held in San Francisco that invests up to $1M per startup on standardized terms (a $500K SAFE for 10% plus up to $500K in the next round), provides $7M+ in partner credits, mentorship from a16z partners, and biannual Demo Day access to 1,000+ investors. Designed for seed-stage technology founders, with a stated acceptance rate below 0.4%.
• a16z speedrun Global Founders Program A specialized parallel track of the speedrun accelerator designed for international founders who cannot relocate to San Francisco, providing tailored support infrastructure and access to the broader a16z speedrun investor and mentor network.
• Speedrun Demo Day A biannual investor event where cohort companies pitch to more than 1,000 investors, providing founders with concentrated exposure to support their next fundraising round.
• Speedrun Marketplace (Partner Credits) An aggregated marketplace of $7M+ in credits from leading infrastructure and service partners (such as AWS, OpenAI, and Stripe) offered to portfolio companies to reduce their operational and infrastructure costs during the program.

Quantifiable outcome

• Deployed more than $200M to fund over 250 startups since 2023 launch
• +6 more outcomes

Named customers24 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Feature4 records

Partnerships

18 partnerships are on record, tiered core and flagship.

• Amazon Web Services (AWS)coreGTM or Marketing PartnerAWS provides cloud credits as part of the speedrun Marketplace offering $7M+ in partner credits. Credits are often enough to fully defray the cost of building an MVP for portfolio companies.
• Google Cloud Platform (GCP)coreGTM or Marketing PartnerGCP provides cloud credits as part of the speedrun Marketplace offering $7M+ in partner credits. Portfolio companies receive priority access to model providers and infrastructure.
• OpenAIcoreTechnology or IntegrationOpenAI is a credit partner in the speedrun Marketplace ($7M+ in credits). Portfolio companies also receive priority access to OpenAI model releases and have OpenAI leadership participating in funding rounds (e.g., Anchr seed round).
• AnthropiccoreTechnology or IntegrationAnthropic provides cloud and AI credits as part of the speedrun Marketplace ($7M+ in credits), giving portfolio companies priority access to frontier AI models.
• MicrosoftcoreTechnology or IntegrationMicrosoft is a credit partner in the speedrun Marketplace ($7M+ in partner credits), supporting portfolio companies with cloud and software resources.
• NVIDIAcoreTechnology or IntegrationNVIDIA is a credit partner in the speedrun Marketplace ($7M+ in credits). Portfolio companies receive priority access to NVIDIA hardware, including GPUs for AI workloads.
• StripecoreTechnology or IntegrationStripe is a credit partner in the speedrun Marketplace ($7M+ in credits), providing payment infrastructure and financial services credits to portfolio companies.
• DeelcoreTechnology or IntegrationDeel is a credit partner in the speedrun Marketplace ($7M+ in credits), supporting portfolio companies with global HR and payroll infrastructure.
• Marc Andreessen (a16z co-founder)flagshipOthersFeatured as a marquee speaker and mentor at a16z speedrun events; serves as co-founder of the parent organization Andreessen Horowitz.
• Ben Horowitz (a16z co-founder)flagshipOthersFeatured as a marquee speaker and mentor at a16z speedrun events; serves as co-founder of the parent organization Andreessen Horowitz.
• Fei-Fei Li (World Labs)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings AI expertise from World Labs to portfolio company founders.
• Kevin Weil (OpenAI)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings AI product expertise from OpenAI to portfolio company founders.
• Henry Ward (Carta)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings founder and equity management expertise from Carta.
• Guillermo Rauch (Vercel)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings developer infrastructure expertise from Vercel.
• Tony Xu (DoorDash)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings consumer and operations expertise from DoorDash.
• Scott Belsky (Behance)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings creative product expertise from Behance.
• Jeff Lawson (Twilio)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings developer platform expertise from Twilio.
• Dylan Field (Figma)flagshipOthersFeatured speaker and mentor at a16z speedrun; brings design and product expertise from Figma.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Pioneer (by Peter Thiel): Pioneer is a rolling, non-cohort-based accelerator founded by Peter Thiel that funds individual founders (not teams) with $100K for 10% equity. It is a direct peer targeting top-tier technical founders and competes with a16z speedrun for the same elite founder demographic.
• Entrepreneurs Roundtable Accelerator (ERA): ERA is a New York-based seed-stage accelerator investing $150K-$500K for 6-8% equity. It is a direct peer of a16z speedrun in the US accelerator landscape, with a similar model of seed capital, mentorship, and Demo Day distribution, though focused on the NYC ecosystem.
• Alchemist Accelerator: Alchemist is a San Francisco-based accelerator focused on enterprise/B2B startups, investing roughly $30K-$50K for 5-8% equity. It is a direct peer of a16z speedrun in the Bay Area accelerator landscape, with a complementary focus on enterprise founders.
• SOSV / HAX: SOSV runs multiple vertical-specific accelerators including HAX (hardware) and IndieBio (biotech), each with a similar seed-investment + acceleration model. It is a direct peer of a16z speedrun as one of the world's most active accelerator operators, with comparable cohort structures and follow-on capital.
• Techstars: Techstars is a global accelerator network running 50+ programs per year across multiple verticals and geographies. It competes directly with a16z speedrun for early-stage founders, offering mentorship-driven programs, seed capital (typically $20K-$120K for 6-10% equity), and an established accelerator network.
• Antler: Antler is a global early-stage investor and accelerator operating in 30+ countries with a strong focus on international founders. It directly competes with a16z speedrun's Global Founders Program, offering residency programs, co-founder matching, and seed capital to founders from emerging tech hubs.
• Betaworks Ventures: Betaworks is a New York-based startup studio and accelerator running 12-week camps with $500K for ~5-10% equity. It is a direct peer of a16z speedrun, particularly in the AI/consumer-tech category, and shares a similar model of curated cohorts with hands-on operator support.
• Y Combinator: Y Combinator is the largest and most established startup accelerator globally, running twice-yearly cohorts with a standard deal of $500K for 7% equity. It is a16z speedrun's primary direct competitor, with both programs competing for the same early-stage founder pool and offering similar seed capital plus Demo Day distribution.
• 500 Global (formerly 500 Startups): 500 Global is a large global accelerator and VC firm running programs in 80+ countries. It is a direct peer of a16z speedrun in the early-stage accelerator category, with comparable seed investment structures, founder education curriculum, and global founder support.

Emerging players

• HF0 (Human Futures 0): HF0 is a San Francisco-based AI-focused 12-week accelerator offering $1M for 8% equity with strong in-person programming. It is an emerging direct peer of a16z speedrun specifically in the AI startup category, with comparable deal size and selectivity, though smaller in scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat7 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/speedrun
• LinkedInlinkedin.com/company/a16zspeedrun

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments55 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about a16z speedrun