San Francisco's startup accelerators and incubators have helped launch some of tech's biggest success stories, with Y Combinator alone driving over $300B in portfolio company valuations. From early-stage funding to world-class mentorship, SF accelerators offer unparalleled opportunities for ambitious founders.
This guide compares the top startup accelerators and incubators across the Bay Area, breaking down their programs, investment terms, and acceptance criteria to help you choose the right launchpad for your startup.
Quick overview of top startup accelerators and incubators in San Francisco
Accelerator
Founded
Program Type
Focus Areas
Investment Size
Program Length
Diversity Investments
Success Rate
Y Combinator
2005
Hybrid
All sectors
$500K
3 months
500+
90%
500 Startups
2010
Hybrid
Tech, AI
$150K
4 months
514
85%
Plug and Play
2006
On-Site
Fintech, IoT
$100K-$500K
3 months
200+
75%
StartX
2009
Hybrid
Deep Tech
No equity
6 months
150+
88%
Alchemist
2012
Online
Enterprise
$36K
6 months
109
82%
NFX
2013
Hybrid
Marketplaces
$2M
5 months
80+
90%
Techstars SF
2006
On-Site
AI/ML, SaaS
$120K
3 months
100+
85%
HAX
2011
On-Site
Hardware
$250K
6 months
70
75%
Founders Space
2010
Hybrid
AI, Blockchain
$50K-$500K
3 months
90+
80%
Berkeley SkyDeck
2012
On-Site
Deep Tech
$200K
6 months
75+
85%
Boost VC
2012
Hybrid
Crypto, Space
$500K
3 months
60+
78%
Forum Ventures
2015
Online
B2B SaaS, AI
Varies
Varies
80+
85%
IndieBio
2014
On-Site
Biotech
$525K
4 months
110
80%
Founders Institute
2009
Online
All sectors
Revenue share
4 months
150+
75%
Matter.vc
2012
Hybrid
Media Tech
$125K
5 months
40+
75%
Singularity
2008
Hybrid
AI, Robotics
$100K
3 months
50+
78%
Newchip
2016
Online
Tech, Healthcare
No upfront
6 months
45+
72%
Health Hub SF
2013
On-Site
Healthcare
$150K
6 months
65+
85%
Quantum Leap
2018
Hybrid
Quantum, AI
$300K
6 months
30+
75%
AI Ventures Lab
2017
Online
AI/ML
$400K
5 months
55+
85%
Impact Accelerator
2014
Hybrid
Social Impact
$150K
5 months
70+
80%
Diversity and inclusion in SF accelerators
San Francisco accelerators are increasingly focusing on diversity and inclusion initiatives. Many programs now have dedicated tracks and funding for underrepresented founders:
Dedicated Diversity Programs: Special cohorts and mentorship for diverse founders
Diversity Investment Metrics: Tracking and reporting of investments in diverse-led startups
Inclusive Selection Process: Structured interview processes to minimize bias
Mentorship Matching: Connecting founders with diverse mentors
Community Partnerships: Working with organizations supporting underrepresented founders
Impact of diversity initiatives
Accelerator
Diversity Investments
% of Portfolio
Notable Success Stories
Y Combinator
500+
25%
Calendly, Faire
500 Startups
514
30%
Canva, Grab
Alchemist
109
28%
LaunchDarkly
Plug and Play
200+
22%
Multiple exits
How to get accepted into top SF accelerators?
Securing a spot in prestigious San Francisco accelerators requires careful preparation and a strong pitch. Here are key strategies:
Perfect your pitch deck and ensure it tells a compelling story
Show clear traction and market validation
Demonstrate a strong founding team
Have a clear exit strategy and growth plan
Build a realistic financial model with runway projections
Secure pitch deck sharing with Papermark
When applying to SF accelerators, protect your pitch deck and track engagement using Papermark's secure sharing features:
Advanced security
Dynamic watermarking with viewer details
Screenshot protection and download controls
Custom access expiration dates
Email verification requirements
IP-based access restrictions
Real-time analytics
Get instant notifications when partners view your deck
"Using Papermark's analytics helped us understand which parts of our deck resonated most with accelerator partners, leading to successful applications at multiple SF programs." - Recent YC Founder
How to choose the right startup accelerator or incubator in San Francisco?
Selecting the optimal accelerator program requires careful consideration of several factors:
Program Focus: Match the accelerator's expertise with your startup's sector
Investment Terms: Understand equity requirements and funding amounts
Network Quality: Evaluate mentor networks and alumni success stories
Program Resources: Consider workspace, technical support, and additional perks
Demo Day Exposure: Research investor attendance and past funding success rates
Post-Program Support: Look for ongoing resources and alumni network strength
Location: Consider if the program is hybrid or requires full-time presence in SF
1. Y Combinator
The world's premier startup accelerator, Y Combinator has shaped the Silicon Valley startup ecosystem since 2005.
Key info
Location: San Francisco, California
Founded: 2005
Founders: Paul Graham, Jessica Livingston, Robert Morris, Trevor Blackwell
Demo Day is crucial for securing follow-on funding. Here's how to maximize your success:
Perfect your pitch
Craft a compelling narrative
Focus on traction and growth metrics
Clearly articulate your competitive advantage
Prepare your materials
Create an investor-ready pitch deck
Develop a comprehensive data room
Prepare detailed financial projections
Practice and refine
Rehearse with mentors and peers
Record and analyze your presentation
Prepare for common investor questions
Track your application progress
Monitor accelerator partner engagement with your application materials:
Get notified when partners review your deck
Track engagement metrics
Follow up strategically
Protect sensitive information
Choosing your SF accelerator in 2025
San Francisco's accelerators and incubators remain the world's premier launchpad for ambitious startups. With acceptance rates as low as 1-2%, thorough preparation is crucial. Choose a program that aligns with your startup's stage and goals, prepare a compelling pitch, and use secure sharing tools to protect your IP during applications.
Remember: The right accelerator can dramatically accelerate your startup's growth - but only if you're ready to make the most of it.