English Proficiency Test vs Duolingo: Which is Better in 2026?
Choosing between English Proficiency Test and Duolingo comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Duolingo is our free Language Learning pick. italki is our overall Language Learning pick. Pick English Proficiency Test if you need assessment tools.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
English Proficiency Test
Free AI-powered English test, CEFR certified
Best for you if:
- • You want a fully free tool (Duolingo requires payment)
Duolingo
Learn a new language with fun, bite-sized lessons.
Best for you if:
- • You want fun language learning
| At a Glance | English Proficiency Test | Duolingo |
|---|---|---|
Starts at | Free 100% free | Free Free plan |
Category | Assessment Tools Language Learning | Language Learning Online Course Platforms |
Rating | n/a | 4.6/5 Capterra 4.6 · G2 4.5 1,122 reviews |
Free plan | Yes | Yes |
Watch out for | Minimum test package purchase | Family plan requires 6 users for lowest per-user price |
Choose English Proficiency Test or Duolingo?
Choose English Proficiency Test if
- You want a fully free tool (Duolingo requires payment)
- You want completely free with no hidden charges or premium upsells
- You want accuracy comparable to fee-based standardized English tests
- You work in assessment tools, not language learning
Choose Duolingo if
- You want fun language learning
- You want good gamification
- You work in language learning, not assessment tools
In-Depth Analysis
English Proficiency Test
Free AI-powered English test, CEFR certified
The value hinges entirely on the cost per test or per candidate, which is currently unknown.
Watch out
Minimum test package purchase
Strengths
- Pro: Completely free with no hidden charges or premium upsells
- Pro: Accuracy comparable to fee-based standardized English tests
- Pro: Multiple test lengths for different assessment needs
- Pro: CEFR certificate recognized on LinkedIn and professional profiles
Weaknesses
- Con: AI scoring of speaking and writing may be less nuanced than human evaluation
- Con: Internet connection required throughout the test
- Con: Certificate may not be accepted by all institutions as a formal qualification
Key features
Duolingo
Learn a new language with fun, bite-sized lessons.
Duolingo's pricing is generally fair, offering a robust free tier for casual learners.
Watch out
Family plan requires 6 users for lowest per-user price
Strengths
- Pro: Fun language learning
- Pro: Good gamification
- Pro: Free core features
- Pro: Many languages
- Pro: Good mobile app
Weaknesses
- Con: Not for fluency
- Con: Ads on free
- Con: Subscription expensive
- Con: Limited advanced content
- Con: Translation focused
Key features
Pricing: English Proficiency Test vs Duolingo
| Plan | English Proficiency Test | Duolingo |
|---|---|---|
| Tier 1 | N/A | 0 Free |
| Tier 2 | N/A | 5 Super |
| Tier 3 | N/A | 1.67 Super Family |
| Tier 4 | N/A | 14 Max |
Pricing verified from each vendor's public pricing page. Compare in detail on English Proficiency Test pricing and Duolingo pricing.
Key Takeaways
Duolingo
- Free tier available
- Our pick for this comparison
English Proficiency Test
- Completely free
- Better fit for assessment tools
The Bottom Line
Duolingo is our free Language Learning pick. italki is our overall Language Learning pick. That said, English Proficiency Test is free, hard to beat on price.
Frequently Asked Questions
Is English Proficiency Test or Duolingo better in 2026?
Duolingo is our free Language Learning pick. italki is our overall Language Learning pick. Pick English Proficiency Test for assessment tools workflows (main strength: completely free with no hidden charges or premium upsells). Pick Duolingo for language learning workflows (main strength: fun language learning).
What are English Proficiency Test and Duolingo used for?
English Proficiency Test : Free AI-powered English test, CEFR certified. Duolingo: Learn a new language with fun, bite-sized lessons.
What does English Proficiency Test cost vs Duolingo?
English Proficiency Test is free. Duolingo pricing is on their site.
What's the main difference between English Proficiency Test and Duolingo?
English Proficiency Test 's main strength: completely free with no hidden charges or premium upsells. Duolingo's main strength: fun language learning.