Duolingo
edX
| Feature | Duolingo | edX |
|---|---|---|
| Pricing | Free / from $9.99/mo | Free / from $50/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.6 / 5 | 4.3 / 5 |
| Best For | language-learners, students, travelers, beginners | career-advancers, university-students, professionals, degree-seekers |
| Founded | 2011 | 2012 |
| Lessons | ✓ | ✗ |
| Stories | ✓ | ✗ |
| Podcasts | ✓ | ✗ |
| Ai Chat | ✓ | ✗ |
| Leaderboards | ✓ | ✗ |
| Streaks | ✓ | ✗ |
| Placement Tests | ✓ | ✗ |
| University Courses | ✗ | ✓ |
| Certificates | ✗ | ✓ |
| Degree Programs | ✗ | ✓ |
| Discussion Forums | ✗ | ✓ |
| Mobile App | ✗ | ✓ |
| Enterprise Training | ✗ | ✓ |
✓ Duolingo Pros
- Completely free core experience
- Gamification makes learning addictive
- AI conversation practice
- 40+ language courses
✗ Duolingo Cons
- Limited for advanced learners
- Ads on free tier
- Grammar explanations can be minimal
✓ edX Pros
- Courses from Harvard, MIT, Berkeley and 160+ institutions
- Free audit access to most course content
- Verified certificates and full degree programs available
- High academic quality with rigorous content
✗ edX Cons
- Certificates are expensive ($50-300+ each)
- Self-paced courses can lack community engagement
- Platform UX feels dated compared to newer competitors
The Verdict
Duolingo is built for language learners and students, with a focus on lessons and stories. edX targets career advancers and university students and leads with university-courses and certificates.
On pricing, Duolingo is the clear winner for budget-conscious users — starting at $9.99/mo compared to $50/mo for edX. That $40.01/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Duolingo offers broader built-in capabilities (7 features vs 6), while edX takes a more focused approach — which can mean a simpler, faster onboarding experience.
Bottom line: Duolingo has a slight overall edge — but if courses from harvard, mit, berkeley and 160+ institutions matters most to you, edX may still be the right call.