kitio.aiDuolingo vs CodeTrain
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Duolingo starts at $12.99/mo and CodeTrain 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
- Socratic step-by-step lessons
- Lessons from any public repo
- In-browser code runner
- Test-checked progress
- Coding agent skill
| Feature | Duolingo | CodeTrain |
|---|---|---|
| Best for | Gamified language app with AI conversation practice on its Max plan | Socratic AI coding tutor that makes you write every line |
| Category | Education | Education |
| Pricing model | Freemium | Freemium |
| Starting price | $12.99/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Duolingo | InferHaven |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Duolingo starts at $12.99/mo and CodeTrain 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
CodeTrain
- Builds real understanding of code
- Uses repositories you care about
- Ten free lessons a month
- Still in beta
- Paid plan prices not listed in evidence
- Slower than letting AI write the code
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 CodeTrain if you want:
- Builds real understanding of code
- Uses repositories you care about
- Ten free lessons a month
Watch out: still in beta.
Duolingo vs CodeTrain FAQ
What is the difference between Duolingo and CodeTrain?
Duolingo: Gamified language app with AI conversation practice on its Max plan. CodeTrain: Socratic AI coding tutor that makes you write every line. Both are education tools.
Is Duolingo or CodeTrain cheaper?
Duolingo starts at $12.99/mo and CodeTrain starts at See pricing page. Check both pricing pages for current plans.
Do Duolingo and CodeTrain have free plans?
Duolingo: Yes. CodeTrain: Yes.
Who makes Duolingo?
Duolingo is made by Duolingo, based in United States.
Who makes CodeTrain?
CodeTrain is made by InferHaven.
Which should I choose, Duolingo or CodeTrain?
Choose Duolingo if you value free plan covers full courses and motivating game mechanics. Choose CodeTrain if you value builds real understanding of code and uses repositories you care about.