Perplexity
Education & ResearchAI answer engine that searches the web and cites its sources.
Duolingo teaches more than 40 languages through short, game-like lessons, along with maths, music and chess. Its higher subscription tiers add AI features such as video-call conversation practice and explanations of your mistakes. The core courses are free.
Duolingo has a free plan or free trial, with paid plans for more features or usage.
Learn languages with bite-sized lessons and AI conversation practice.
Popular alternatives include Perplexity, Blinkist, Brainly.
See 14 alternatives to Duolingo →
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AI answer engine that searches the web and cites its sources.
Book summaries in text and audio.
Homework help with AI and community answers.