Santa
Adjust test preparation exercises to a learner's performance.
Riiid Funding History
Riiid is a South Korean education technology company building AI tutoring and test-preparation products including Santa and R.test.
Company Overview
Founded 2014 · Seoul, South Korea
Official WebsiteRiiid Funding Timeline
Series D
US$175 million
Riiid said the financing would help it bring AI-based personalized learning and assessment tools to more markets.
Led by SoftBank Vision Fund 2.
Source · en.wikipedia.org ↗Pre-Series D
US$41.8 million
Riiid said the financing would support international expansion of its adaptive learning technology.
Participation included Korea Development Bank, NVESTOR, Intervest, IMM Investment.
Source · prnewswire.com ↗
Riiid Founding Team
YJ Jang co-founded Riiid, which launched Santa for TOEIC as an early application of AI to test preparation. The founding team included Jaewe Heo and Minsung Noh.
Riiid Products
Riiid Company Development
Adaptive Practice Expands into Exam Readiness
Riiid's Santa product applies adaptation to exam preparation. R.test addresses a narrower question within the same field: how ready a student is for an exam and which areas need attention before the next practice session.
Riiid Competitive Landscape
Exam Readiness and Curriculum Mastery
Riiid's focus on specific tests changes the unit of progress. An exam-prep tool can track how a learner performs against a particular test format, while Squirrel AI's K–12 tutoring focuses on mastery across a curriculum.