Quizlet

Quizlet is a multi-national American education technology company that provides digital study tools, including flashcards, practice quizzes, and collaborative learning games. The service was founded in 2006 by Andrew Sutherland and released publicly in 2007.

The platform is widely used in K-12 and higher education, and as of 2021, Quizlet reported more than 60 million monthly active users and over 500 million user-generated study sets. Quizlet operates on a freemium model, offering both free basic study tools and paid subscriptions with added features.

## Contents

* 1 History
* 1.1 Founding and early years (2005–2011)
* 1.2 Product expansion and growth (2012–2019)
* 1.3 Acquisitions and leadership changes (2020–present)
* 2 See also
* 3 References
* 4 External links

## History

### Founding and early years (2005–2011)

Quizlet was founded in 2005 by Andrew Sutherland as a studying tool to aid in memorization while studying for his French class.[1][2][3][4] In an AMA on Reddit, Sutherland said in the "first year and a half" he was "just playing around with it", but that he decided to make it public after convincing ~100 people to try the service.[5] He formed a company[when?] called Brainflare with his father as the CFO/Secretary to take care of business concerns.[1] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online (that is, on September 26, 2007).[6] Quizlet released to the public in January 2007.[7]In the following two years, Quizlet reached its 1,000,000th registered user.[8] Sutherland later described the early years as financially challenging, with questions about longevity.[9]

Until 2011, Quizlet shared staff and financial resources with the Collectors Weekly website.[10]

In 2011, Quizlet added the ability to listen to content using text-to-speech.[11]

### Product expansion and growth (2012–2019)

In August 2012, it released an app for the iPhone and iPad and shortly afterward one for Android devices.[10]

In 2015, Quizlet announced raising $12 million from Union Square Ventures, Costanoa Venture Capital, Altos Ventures, and Owl Ventures to expand its digital study tools and grow internationally.[12] In a blog post, Sutherland later described the first 10 years of the company as "ten years of bootstrapping".[9]

Quizlet hired Matt Glotzbach as CEO in May 2016 and launched a redesign in August 2016.[13] Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way.[14]

In 2017, 1 in 2 high school students used Quizlet.[15]

In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.[16][17] Glotzbach announced in 2018 that Quizlet would be opening offices in Denver, Colorado in 2018, announcing "a big vision at Quizlet to provide the most intelligent study tools in the world, and our expansion into Denver, a city with incredible tech ingenuity, will help us more quickly build the next generation of learning tools used by students everywhere".[18]

### Acquisitions and leadership changes (2020–present)

Andrew Sutherland left Quizlet at age 30 in 2020,[19] citing disagreements with the executive team and a desire for a change.[9]

During the COVID-19 pandemic, Glotzbach announced he was opening Quizlet's premium service, Quizlet Teacher, for free to all users who have an account registered as a teacher.[20]

Quizlet made its first acquisition in March 2021, with the purchase of Slader, which offered detailed explanations of textbook concepts and practice problems, and eventually incorporated it into its paid platform, Quizlet Plus.[21][22][23]

In November 2022, Quizlet announced a new CEO, Lex Bayer, the former CEO of Starship Technologies.[24] In March 2023, Quizlet started to incorporate AI features with the release "Q-Chat", a virtual AI tutor powered by OpenAI's ChatGPT API.[25][26][27]

Quizlet launched four additional AI powered features in August 2023 to assist with student learning.[28][29] The company has also introduced AI-powered tutoring capabilities and live collaborative gameplay tools such as QuizletLive.[30]

In July 2024, Kurt Beidler, the former co-CEO of Zwift, joined Quizlet as the new CEO.[31][32]

In 2025, Quizlet introduced Course-Powered Quizlet, a feature that allows students to organize and share study materials by institution and course, supporting collaboration among classmates. The feature also uses large language models to help synthesize user-contributed notes into study guides and practice questions.[33]

Quizlet acquired Coconote, an AI note-taking app that turns audio and video recordings into study materials, in February 2026.[34]

In March 2026, Quizlet integrated with ChatGPT allowing users to generate study materials from notes, conversations, or recorded lectures.[35]

## See also

* JungleAI
* Anki
* Chegg
* Course Hero
* Kahoot!
* Gimkit

## References

1. ↑ 1.0 1.1 Tynan, Dan. "Meet the Whiz Kids: 10 Overachievers Under 21" (in en). https://abcnews.go.com/Technology/PCWorld/story?id=4417827.
2. ↑ (in en) Quizlet's Andrew Sutherland on The Morning Show, April 17, 2008, https://www.youtube.com/watch?v=ilSPvgo0K38, retrieved 2022-09-20
3. ↑ "QUIZLET: Join millions and Build Your Own Flashcards, Game Yourself to Smart". SF New Tech. November 2010. http://sfnewtech.com/2010/11/19/quizlet-join-millions-build-your-own-flashcards-game-yourself-to-smart/.
4. ↑ Mullen, Audrey (20 August 2019). "Going to School While Running a Startup: When Students Build Their Own Edtech". https://www.edsurge.com/news/2019-08-20-going-to-school-running-a-startup-when-students-build-their-own-edtech.
5. ↑ Sutherland, Andrew (2017). "Hi, I'm the founder of Quizlet, the most popular online learning service in the US. Ask Me Anything!". https://old.reddit.com/r/IAmA/comments/576qhq/hi_im_the_founder_of_quizlet_the_most_popular/d8piakf/. "So for the first year and a half, I was just playing around with it. After getting about 100 people (mostly friends from the internet) to try it, I decided it would be worthwhile to make it public so anyone could make their own sets."
6. ↑ "50,000 registered users!" (in en-gb). https://quizlet.com/blog/50000-registered-users.
7. ↑ "QUIZLET". The Innovation Economy, presented by Intel, in partnership with the Aspen Institute, PBS Newshour. http://www.theinnovationeconomy.org/_layouts/IEC/InnovatorsCorner/InvCrnDetails.aspx?IcrnId=2&LinkId=2&videono=7922161&Vdesc=7.
8. ↑ "Celebrating 10 Years of Quizlet.com" (in en-gb). https://quizlet.com/blog/celebrating-10-years-of-quizletcom.
9. ↑ 9.0 9.1 9.2 Sutherland, Andrew (September 2021). "Goodbye Quizlet, Hello World". https://asuth.com/goodbye-quizlet.
10. ↑ 10.0 10.1 "Quizlet's Growth Puts It on the Top of the Edtech Stack". EdSurge. November 2012. https://www.edsurge.com/n/quizlet-s-growth-puts-it-on-the-top-of-the-edtech-stack.
11. ↑ "Quizlet Now Offers "Speller" Mode in 18 Languages". Free Technology for Teachers. July 2011. http://www.freetech4teachers.com/2011/07/quizlet-now-offers-speller-mode-in-18.html#.VM5tV8YsrUV.
12. ↑ Kolodny, Lora (2015-11-23). "Quizlet Raises $12 Million to Take Its Popular Study Tools International". Wall Street Journal. https://blogs.wsj.com/venturecapital/2015/11/23/quizlet-raises-12-million-to-take-its-popular-study-tools-international/?mod=WSJBlog.
13. ↑ Kolodny, Lora (5 May 2016). "YouTube VP Matt Glotzbach graduates to CEO role at Quizlet". https://techcrunch.com/2016/05/05/youtube-vp-matt-glotzbach-graduates-to-ceo-role-at-quizlet/.
14. ↑ Kolodny, Lora (12 April 2016). "Popular study app Quizlet creates a game for groups in the classroom, Quizlet Live". https://techcrunch.com/2016/04/12/quizlet-creates-a-game-for-groups-in-the-classroom-quizlet-live/.
15. ↑ Kolodny, Lora (August 23, 2017). "Popular study app Quizlet faces a moment of truth as a new school year begins" (in en). https://www.cnbc.com/2017/08/23/quizlet-a-popular-study-app-faces-a-moment-of-truth.html.
16. ↑ Kolodny, Lora (23 August 2017). "Popular study app Quizlet faces a moment of truth as a new school year begins". https://www.cnbc.com/2017/08/23/quizlet-a-popular-study-app-faces-a-moment-of-truth.html.
17. ↑ Duffy, Jill (1 October 2021). "Quizlet Review". https://www.pcmag.com/reviews/quizlet.
18. ↑ Svaldi, Aldo (30 October 2018). "Quizlet online learning platform's new Denver office could bring 300 jobs paying average annual wage of $156K". https://www.denverpost.com/2018/10/30/quizlet-denver-second-office/.
19. ↑ Sutherland, Andrew. "About". https://asuth.com/about.
20. ↑ "Free Quizlet Teacher to support remote learning" (in en-gb). https://quizlet.com/blog/free-quizlet-teacher-to-support-remote-learning.
21. ↑ Hahm, Melody (2021-03-25). "Exclusive: Quizlet acquires Slader as it aims to become the one-stop destination for students". Yahoo Finance. https://finance.yahoo.com/news/quizlet-schools-reopening-remote-biden-administration-140015742.html.
22. ↑ Mascarenhas, Natasha (1 April 2021). "How is edtech spending its extra capital?". https://techcrunch.com/2021/04/01/how-is-edtech-spending-its-extra-capital/.
23. ↑ Luk, Serena (12 December 2022). "Quizlet: A Growing Monopoly on Education". https://ihsvoice.com/2022/12/12/quizlet-a-growing-monopoly-on-education/.
24. ↑ "Quizlet Appoints New Chief Executive Officer". PR Newswire (Press release).
25. ↑ Newton, Casey (3 March 2021). "Who's actually getting rich off of AI?". https://www.theverge.com/23623495/ai-profits-winners-losers-openai-notion-snapchat.
26. ↑ Wiggers, Kyle (1 March 2023). "OpenAI launches an API for ChatGPT, plus dedicated capacity for enterprise customers". https://techcrunch.com/2023/03/01/openai-launches-an-api-for-chatgpt-plus-dedicated-capacity-for-enterprise-customers/.
27. ↑ Kahn, Jeremy (1 March 2023). "OpenAI rolls out ChatGPT for business customers". https://fortune.com/2023/03/01/openai-chatgpt-api-enterprise-commercial-instacart-shopify-snap-quizlet/.
28. ↑ Ravaglia, Ray (10 August 2023). "Quizlet Embraces AI And ChatGPT To Transform The Experience Of Studying". Forbes. https://www.forbes.com/sites/rayravaglia/2023/08/10/quizlet-embraces-ai-and-chatgpt-to-transform-the-experience-of-studying/?sh=407f79095b12.
29. ↑ Ortiz, Sabrina (8 August 2023). "Quizlet launches four generative AI-powered tools to simplify studying". https://www.zdnet.com/article/quizlet-launches-four-generative-ai-powered-tools-to-simplify-studying/.
30. ↑ Bhutta, Fatima (18 January 2019). "Quizlet reaches 50 Million Users milestone". https://techengage.com/quizlet-50-million-users-reached/.
31. ↑ "Kurt Beidler Appointed as Quizlet's New CEO to Drive Global Growth". 23 July 2024. https://www.techedgeai.com/kurt-beidler-appointed-as-quizlets-new-ceo-to-drive-global-growth/.
32. ↑ Anderson, Ted (22 July 2024). "Daily Digest: Deutsche Bank looks to hire in San Francisco; Oakland Ballers fire coach". https://www.bizjournals.com/sanfrancisco/news/2024/07/22/sfbt-digest-monday-ballers-deutsche-bank-sf.html.
33. ↑ Ravaglia, Ray. "Quizlet Uses AI, Peer Content, To Drive Course-Powered Learning" (in en). Forbes. https://www.forbes.com/sites/rayravaglia/2025/01/30/quizlet-uses-ai-peer-content-to-drive-course-powered-learning/.
34. ↑ Chowdhry, Amit (8 February 2026). "Quizlet Acquires Coconote And Adds New AI Study Experience". Pulse 2.0. https://pulse2.com/quizlet-acquires-coconote-and-adds-new-ai-study-experience/.
35. ↑ Ng, Alexandria (2026-03-13). "Quizlet Expands AI Strategy with New Study Tool, OpenAI Integration" (in en). https://marketbrief.edweek.org/product-development/quizlet-expands-ai-strategy-with-new-study-tool-openai-integration/2026/03.

## External links

* Official website

* v
* t
* e

Spaced repetition

Concepts|

* Spaced repetition
* Spacing effect
* Testing effect
* Forgetting curve
* Flashcard
* Memory
* Leitner system
* Incremental reading

Study Software|

* List of Flashcard software
* Anki
* Cerego
* Cobocards
* Course Hero
* Cram
* Cram.com
* Duolingo
* eSpindle Learning
* Hello English
* Memrise
* Mnemosyne
* OpenCards
* Quizlet
* SuperMemo
* Synap

Practitioners|

* Paul Pimsleur
* Sebastian Leitner
* Piotr Woźniak

Researchers|

* Hermann Ebbinghaus
* Thomas Landauer and Robert A. Bjork
* Cecil Alec Mace
* Hal Pashler

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