Startup accelerator

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Startup accelerators, also known as seed accelerators, are fixed-term, cohort-based programs that include seed investment, connections, sales, mentorship, educational components, and culminate in a public pitch event or demo day to accelerate growth.[1] Most startup accelerators in Silicon Valley and globally are privately funded as an investment fund that take equity and focus on a wide range of industries.


The main differences between business incubators and accelerators are:[2]

  1. The application process is open to anyone, but highly competitive. Y Combinator and Techstars have application acceptance rates between 1% and 3%.
  2. A seed investment in the startups is usually made, in exchange for equity. Typically, the investment is between US$20,000 and US$50,000 (or GB£10,000 and GB£50,000 in Europe[3])
  3. The focus is on small teams, not on individual founders. Accelerators consider that one person is insufficient to handle all the work associated with a startup.
  4. The startups must "graduate" by a given deadline, typically after 3 months. During this time, they receive intensive mentoring and training, and they are expected to iterate rapidly. Virtually all accelerators end their programs with a "Demo Day", where the startups present to investors.[4]
  5. Startups are accepted and supported in cohort batches or classes (the accelerator isn't an on-demand resource[5]). The peer support and feedback that the classes provide is an important advantage. If the accelerator doesn't offer a common workspace, the teams will meet periodically.

The primary value to the entrepreneur is derived from the mentoring, connections, and the recognition of being chosen to be a part of the accelerator. The business model is based on generating venture style returns, not rent, or fees for services.

Seed accelerators do not necessarily need to include a physical space, but many do. The process that startups go through in the accelerator can be separated into five distinct phases: awareness, application, program, demo day, and post demo day.[3]

Seed accelerators are more focused on product development while incubators are looking at scaling, expanding the market offering


The first company known to use the word "accelerator" was Y Combinator, which started in Cambridge, Massachusetts, by Paul Graham in 2005, and later moved to Silicon Valley.[3] Other seed accelerator programs emerged across the US, including Techstars (Boulder, CO), 500 Startups (Mountain View, California), and MassChallenge (Boston, Massachusetts).[6][7][8]

Around this time, seed accelerator programs also started emerging in China and Southeast Asia. An example of which is Chinaccelerator (Shanghai, China), which was launched as the first accelerator to go to China in 2009.

With the growing popularity of seed accelerator programs in the US, Europe has seen an increase in accelerators to support a growing startup ecosystem.[9] Top-rated seed accelerator programs in Europe as of 2011 included Seedcamp (based in London) and Startupbootcamp (pan European accelerator with program locations and office spaces based in Copenhagen, Amsterdam, Berlin, Israel, Eindhoven, Istanbul and London).[10]

Forbes published an analysis of startup accelerators in April 2012.[11] Since 2010 there has been substantial growth of Corporate Accelerator programs, which are sponsored by established organizations but follow similar principles.[citation needed]

Accelerators have become a major source of startups for traditional investors. In 2015, one-third of U.S. startups who raised a series A went through an accelerator.[12] Research by the government of the UK published in 2017 found that in the UK, investor-backed accelerators are being overtaken by corporate- or publicly backed models.[13]


Hardware accelerators[edit]

Several accelerators focused on hardware innovation have been founded in Silicon Valley and in other regions worldwide.[14][15][16]

AI accelerators[edit]

As of 2017, artificial intelligence and machine learning is a growing field, with various investment funds.[citation needed]

Biotech accelerators[edit]

There are accelerator programs in the field of biotech.[17]

See also[edit]


  1. ^ Cohen, Susan. "What Do Accelerators Do? Insights from Incubators and Angels". Innovations. 8 (3–4): 19–25. doi:10.1162/inov_a_00184. Retrieved 6 March 2014.
  2. ^ Miller, Paul; Bound, Kirsten (June 2011). The Startup Factories - The rise of accelerator programmes to support new technology ventures (PDF). London, UK: NESTA. p. 3.
  3. ^ a b c Lisa Barrehag; Alexander Fornell; Gustav Larsson; Viktor Mårdström; Victor Westergård; Samuel Wrackefeldt (May 2012). Accelerating Success: A Study of Seed Accelerators and Their Defining Characteristics. Gothenburg, Sweden: Chalmers University of Technology. Retrieved 14 September 2012.
  4. ^ Gilani, Aziz; Dettori, Gianluca (Jul 16, 2011). "Incubators in US and Europe - Speed and scale in capital formation". Kauffman Fellow Program. p. 21. Retrieved 14 September 2012.
  5. ^ Christiansen, Jed. "Seed Accelerator Definition". Retrieved 14 September 2012.
  6. ^ "Techstars FAQ | The global network that helps entrepreneurs succeed". Techstars. Retrieved 2019-05-13.
  7. ^ "500 Startups Unveils 2nd Batch: 21 Startups, From "Foodspotting For Fashion" To "Iron Chef In Your Living Room"". TechCrunch. Retrieved 2019-05-13.
  8. ^ "About". Retrieved 2019-05-13.
  9. ^ Johnson, Bobbie (July 18, 2011). "Are Europe's startup accelerators speeding out of control?". GigaOM.
  10. ^ Gruber, Frank (June 20, 2011). "Top 8 European Startup Accelerators and Incubators Ranked Seedcamp and Startupbootcamp Top Rankings 2011". Tech Cocktail.
  11. ^ Tomio, Geron (30 April 2012). "Top Startup Incubators And Accelerators". Forbes. p. 1.
  12. ^ Tom, Mikey (2016-02-05). "One-third of U.S. startups that raised a Series A in 2015 went through an accelerator". Pitchbook. Retrieved 2017-11-05.
  13. ^ Bone, J; Allen, O; Haley, C (12 April 2017). "Business incubators and accelerators: the national picture". Nesta / UK Department of Business Energy & Industrial Strategy. Retrieved 20 June 2018.
  14. ^ "Chinese startups push into foreign markets". The Economist. Retrieved 2017-03-24.
  15. ^ "Life Inside A Shenzhen Hardware Accelerator | Fast Company". Fast Company. 2017-01-07. Retrieved 2017-03-24.
  16. ^ Benzion, Adam (2014-10-21). "The Best Accelerators for Hardware Startups". The Next Web. Retrieved 2017-03-24.
  17. ^ "SOSVentures Takes On Y Combinator With A Pure Biotech Accelerator".

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