Sana Labs vs Duolingo

Duolingo has a disclosed valuation of $5.2B, while Sana Labs's valuation is not publicly available, making a direct size comparison difficult. Duolingo employs 850 people.

Duolingo has raised more in total funding at $183.3M, compared to Sana Labs's $136M — a gap of $47.3M. Combined, the two companies have completed 11 known funding rounds.

Duolingo leads with an Awaira Score of 92/100, while Sana Labs sits at 60/100. That 32-point gap reflects real differences in funding, scale, and traction — it's not a vanity metric.

Sana Labs was founded by Joel Hellermark in 2016. Duolingo was founded by Luis von Ahn in 2011. Visit each company's profile on Awaira for a full founder biography.

Sana Labs: Sana Labs builds an AI-powered learning management and knowledge management platform for enterprises, combining a corporate LMS with an AI assistant that can surface relevant knowledge from internal documents, meeting recordings, and past learning content in response to employee questions. The Stockholm company products span structured course creation, AI-generated training content, and a knowledge base that learns from employee interactions to surface relevant information at the point of need.\n\nThe company raised approximately $80 million including a Series B round from investors including EQT Ventures, Balderton Capital, and NEA. Sana counts Spotify, Aesop, and multiple technology companies and professional services firms among its enterprise clients, deploying its platform as a combined LMS and internal knowledge assistant. The AI search and generation capabilities allow HR and L&D teams to maintain knowledge bases that employees can query in natural language rather than browsing static document repositories.\n\nSana competes in the corporate learning market against Workday Learning, Cornerstone, and 360Learning, as well as newer AI-native knowledge management tools including Notion AI, Guru, and Glean. Its differentiation is the combination of structured learning content management with generative AI knowledge retrieval in a single platform, reducing the need for enterprise customers to maintain separate LMS and knowledge base systems. The company Stockholm base gives it strong access to Scandinavian enterprise clients where digital workplace adoption rates are among the highest in Europe. Duolingo: Duolingo is a language-learning platform founded in 2011 that uses gamification and adaptive AI to teach over 40 languages to millions of users globally. The company's core product is a mobile and web application that breaks language instruction into bite-sized lessons, typically five to ten minutes long, combining vocabulary, grammar, listening, and speaking exercises. Duolingo's AI-powered algorithm personalizes learning paths based on user performance, adjusting difficulty and content recommendations in real-time. The platform employs spaced repetition and reinforcement learning techniques to optimize retention. The company monetizes through a freemium model, offering free basic access with ads and a premium subscription (Duolingo Plus) for ad-free learning and offline access. As of 2024, Duolingo is a publicly traded company with a $5.2 billion valuation and has accumulated $183 million in total funding. The platform serves over 500 million users worldwide, with particular strength in younger demographics and developing markets. Duolingo competes with established players like Rosetta Stone and Babbel, though its gamified approach and mobile-first design have captured significant market share. The company has expanded beyond language learning, introducing math and music offerings. Revenue growth has been substantial, with the company achieving adjusted EBITDA profitability before its 2021 IPO, though it reported net losses on a GAAP basis, demonstrating strong unit economics and user retention metrics. Duolingo's integration of behavioral psychology through gamification and AI-driven personalization has made language learning accessible and habit-forming at massive scale.

Duolingo got there first, launching in 2011 — that's 5 years of extra runway. Sana Labs didn't arrive until 2016. In AI, that kind of head start means more training data, deeper customer relationships, and a bigger talent moat.

Sana Labs has about 100-500 employees; Duolingo has about 850. A bigger team usually means more revenue or heavier VC backing, but in AI, small teams can build at massive scale.

Yes — they're direct rivals. Both Sana Labs and Duolingo compete in AI Education, targeting many of the same buyers. If you're evaluating one, you should be looking at the other.