Duolingo vs Nolej

Side-by-side comparison of Duolingo and Nolej: pricing, features, API access, and community ratings.

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	Duolingo Learn a language for free — AI-powered lessons that adapt to you Visit	Nolej Transform content into learning that lasts — quizzes, games, chatbots & interactive courses from your own content. Visit
Category	Education & learning	Education & learning
Pricing	Freemium	Freemium
Starting price	USD 6.99/mo
Free tier
Audience	All audiences	All audiences
API available
Open source
Self-hostable
Model provider	OpenAI (GPT-4 for Duolingo Max features)
Founded	2011
Headquarters	Pittsburgh, USA
Key strengths	·Adaptive AI-powered lesson personalization ·Gamified learning with streaks, XP, and leaderboards ·40+ languages supported ·AI conversation practice (Duolingo Max)	·Converts existing content into 15+ interactive learning activities ·Secure, sovereign architecture with EU and on-premise hosting options ·No-code chatbot generation from a custom knowledge base ·Broad export formats: SCORM, H5P, PDF, AIKEN, Excel