kitio.aiDuolingo vs Alethia AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Duolingo starts at $12.99/mo and Alethia AI starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Bite-sized lessons
- Streaks and leagues
- AI Video Call
- Explain My Answer
- Maths and music courses
- Real-time talking avatars
- Scored practice sessions
- AI tutor lessons
- Custom business scenarios
- Character API
| Feature | Duolingo | Alethia AI |
|---|---|---|
| Best for | Gamified language app with AI conversation practice on its Max plan | Real-time interactive avatars for role-play practice and AI tutoring |
| Category | Education | Education |
| Pricing model | Freemium | Freemium |
| Starting price | $12.99/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Duolingo | Alethea Tech |
| Based in | United States | Singapore |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Duolingo starts at $12.99/mo and Alethia AI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- All language courses
- Ads and limited hearts
Super
$12.99/mo
- No ads
- Unlimited hearts
- Personalized practice
Max
$29.99/mo
- Everything in Super
- AI-powered explanations
- Video Call and roleplay practice
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Duolingo
- Free plan covers full courses
- Motivating game mechanics
- Huge choice of languages
- Limited speaking practice without Max
- Hard to reach advanced fluency alone
Alethia AI
- Spoken, face-to-face practice
- Sessions scored on clear criteria
- Scenarios tailored to a business
- Pricing not published
- API access needs a sales call
- Company also works on blockchain projects
Which one should you choose?
Choose Duolingo if you want:
- Free plan covers full courses
- Motivating game mechanics
- Huge choice of languages
Watch out: limited speaking practice without max.
Choose Alethia AI if you want:
- Spoken, face-to-face practice
- Sessions scored on clear criteria
- Scenarios tailored to a business
Watch out: pricing not published.
Duolingo vs Alethia AI FAQ
What is the difference between Duolingo and Alethia AI?
Duolingo: Gamified language app with AI conversation practice on its Max plan. Alethia AI: Real-time interactive avatars for role-play practice and AI tutoring. Both are education tools.
Is Duolingo or Alethia AI cheaper?
Duolingo starts at $12.99/mo and Alethia AI starts at See pricing page. Check both pricing pages for current plans.
Do Duolingo and Alethia AI have free plans?
Duolingo: Yes. Alethia AI: Yes.
Who makes Duolingo?
Duolingo is made by Duolingo, based in United States.
Who makes Alethia AI?
Alethia AI is made by Alethea Tech, based in Singapore.
Which should I choose, Duolingo or Alethia AI?
Choose Duolingo if you value free plan covers full courses and motivating game mechanics. Choose Alethia AI if you value spoken, face-to-face practice and sessions scored on clear criteria.