Last updated: November 2026
Duolingo uses artificial intelligence (AI) in almost every part of the app — from picking your next exercise to letting you talk with an AI character. But there is no separate “AI plan” to buy, and the old AI plan, Duolingo Max, is ending. So what does AI in Duolingo actually do, and does it cost extra?
Short answer: AI in Duolingo costs nothing extra. The smart lesson system, mistake explanations, and practice tools are free for everyone. The AI conversation feature, Video Call, is part of Super — and Duolingo Max, the old AI plan, is being discontinued in November 2026.
Here is what we will cover:
- What AI does in Duolingo today
- Explain My Answer — now free for everyone
- Video Call — the AI conversation feature moving to Super
- Roleplay — what happens to it now
- Birdbrain — the AI behind your lessons
- Does AI cost extra?
- What happened to Duolingo Max
- The limits of Duolingo’s AI
- FAQs
What AI Does in Duolingo Today
AI is not one feature in Duolingo. It works in the background of the whole app. Here is the full picture:
| AI feature | What it does | Who gets it |
|---|---|---|
| Birdbrain | Picks exercises at the right difficulty for you | Everyone, free and paid |
| Explain My Answer | Explains why your answer was right or wrong | Everyone, free, in supported courses |
| Practice Hub | Personal practice based on your mistakes | Everyone, free |
| Video Call | Spoken conversation with an AI character | Super subscribers (rolling out to all by end of 2026) |
| Roleplay | Practice real-life situations with AI characters | Was a Max feature; future for Super not confirmed |
| AI-built courses | New courses and lessons created faster with AI help | Everyone — 148 new courses launched in April 2025 |
Explain My Answer — Now Free for Everyone
Explain My Answer is the most useful AI feature for most learners. After an exercise, it tells you why your answer was right or wrong — the grammar rule, the word choice, the mistake you made. It is like a teacher’s note on every answer.
It used to be a Duolingo Max feature. On 1 January 2026, Duolingo made it free for all learners. It works in supported courses, including Spanish, French, German, Japanese, Portuguese, Italian, and Korean.
You do not need to pay anything to use it. If you see the Explain My Answer button after an exercise, tap it and read the explanation. It is the single best free AI tool in the app.
Video Call — Talk With an AI Character
Video Call is Duolingo’s AI conversation feature. You “call” Lily, a Duolingo character, and hold a spoken conversation in the language you are learning. Lily adjusts to your level, remembers what you talked about before, and gives you a transcript after the call. For beginners, there is a guided version with Falstaff, a friendly bear character who asks easier questions and suggests phrases.
Video Call works in the iOS and Android apps, in supported courses including English, French, Spanish, German, Italian, and Portuguese.
This was the headline feature of Duolingo Max. In 2026, Duolingo started giving it to Super subscribers instead. New Super subscribers already get unlimited Video Call, and Duolingo says all Super subscribers will have it by the end of 2026.
Why the change? The calls got far cheaper to run — Duolingo’s CEO said a video call that once cost about $0.30 now costs under $0.01 — so there was no reason to keep it locked behind the most expensive plan.
Roleplay — Practice Real Situations
Roleplay lets you practice everyday situations with AI characters — ordering food at a café, asking for directions, checking into a hotel. You play through a scene, and the AI gives you feedback on your answers at the end.
Roleplay was the second AI feature of Duolingo Max, alongside Video Call. Here is the honest status: Duolingo’s November 2026 shareholder letter confirms that Video Call is moving to Super. It does not confirm the same for Roleplay. So we do not yet know if Roleplay will come to all Super users, stay limited, or change. Do not buy a plan expecting Roleplay until Duolingo says so clearly.
Birdbrain — the AI Behind Your Lessons
Birdbrain is Duolingo’s own AI system, and it has been running since 2020 — long before Max existed. It predicts whether you will get each exercise right, then builds your lessons at the right difficulty: harder when you are doing well, easier when you struggle. It also powers spaced repetition, bringing back words just before you would forget them.
Every learner gets Birdbrain, free or paying. It is the reason two people studying the same language can get different lessons on the same day.
Behind the scenes, AI also helps Duolingo build its courses. In April 2025, Duolingo launched 148 new language courses built with generative AI — more than doubling its course catalog in one release. Human experts still review the AI-made content for accuracy.
Does AI in Duolingo Cost Extra?
No. There is no separate AI charge, and you do not need a special plan for most AI features. Here is how the costs break down:
| What you want | What you pay |
|---|---|
| Birdbrain lessons, Explain My Answer, Practice Hub | $0 — free for everyone |
| Video Call with Lily or Falstaff | Super — about $12.99–$13.99 a month, or about $83.99–$119.99 a year (US) |
| Roleplay | Was part of Max; future pricing not confirmed |
| Super Family (up to 6 people) | About $119.99–$143.99 a year (US) |
Duolingo publishes no price list, and prices vary by account, country, and platform. Always check the price on your own checkout screen before you pay. For the full price breakdown, see Does Duolingo Cost Money?
Do not pay for AI alone. If someone offers you a “Duolingo AI” subscription, a generator, or a mod APK that unlocks AI features, it is a scam. All real AI features come only inside the official Duolingo app.
What Happened to Duolingo Max?
Duolingo Max launched in March 2023 as the top plan, powered by OpenAI’s GPT-4. It added Explain My Answer, Roleplay, and Video Call on top of Super. It cost about $29.99 a month or about $168 a year in the US.
Then Max lost its exclusives one by one. Explain My Answer became free in January 2026. Video Call started moving to Super in 2026. In its Q3 2026 shareholder letter (3 November 2026), Duolingo said it will stop selling new Max subscriptions in November 2026. Existing individual Max subscribers move to a Super Family plan at the same price, keeping the same features plus the option to share with up to 5 others. Max Family options will be addressed in 2027.
Bottom line: you cannot buy Max as a new plan anymore. If you want AI features today, the plan is Super. For the full story, see Duolingo Max Is Discontinued: What Next?
The Limits of Duolingo’s AI
Duolingo’s AI is good practice, but it has real limits. Keep these in mind:
- AI chats are short practice, not real conversation. A call with Lily lasts a few minutes. It builds confidence, but it does not replace talking with real people.
- AI features cover only some courses. Video Call and Roleplay work in about nine courses, mostly the big European languages. Smaller courses may not have them at all.
- AI can be wrong. Explain My Answer is usually right, but it is still AI. If an explanation looks strange, check it against a grammar book or a teacher.
- AI does not teach you to be fluent alone. Duolingo’s own research says the app works best as a daily base — real listening, reading, and speaking practice fill the gaps it leaves.
Frequently Asked Questions
What is AI-powered Duolingo?
AI-powered Duolingo means the app uses artificial intelligence to personalize lessons (Birdbrain), explain your mistakes (Explain My Answer), and let you practice speaking with AI characters (Video Call and Roleplay). Most of it is built into the free app.
Does AI in Duolingo cost extra?
No. Birdbrain, Explain My Answer, and the Practice Hub are free for everyone. Video Call comes with Super. There is no separate AI fee.
Is Duolingo Max still available?
No. Duolingo stopped selling new Max subscriptions in November 2026. Its main feature, Video Call, is moving into Super. If you already pay for Max, you will be moved to a Super Family plan at the same price.
Is Explain My Answer free?
Yes. Since 1 January 2026, Explain My Answer is free for all learners in supported courses, including Spanish, French, German, Japanese, Portuguese, Italian, and Korean.
Can I use Video Call without Super?
No. Video Call is a Super feature. New Super subscribers already get it, and Duolingo says all Super subscribers will have it by the end of 2026.
What is Birdbrain?
Birdbrain is Duolingo’s AI system that predicts how likely you are to get each exercise right, then adjusts your lessons to match your level. It runs for every learner, free or paying, and has been part of Duolingo since 2020.
Does Duolingo use GPT-4?
Duolingo Max launched on OpenAI’s GPT-4 in March 2023. Today Duolingo uses a mix of models — OpenAI, Anthropic, and open-source models — with Video Call running mainly on open-source models.
The Verdict
AI in Duolingo is real, and most of it is free. Explain My Answer alone is worth using every day — it turns every mistake into a lesson, and it costs nothing. Video Call is a nice bonus if you already pay for Super, but it is not a reason to pay on its own. And with Max ending, the choice is simple: learn free, and pay for Super only if the free limits — ads and the daily energy cap — keep getting in your way.
Thinking about Super? Read Is Super Duolingo Worth It? first, or check the price guide: Does Duolingo Cost Money?
