The AI features cover a much shorter list of languages than the app does. Duolingo's help centre currently lists Video Call for learners of English, French, Spanish, Italian, German and Portuguese, and Roleplay for English speakers learning French, Spanish, German, Portuguese or Italian — plus English courses for Spanish, Portuguese, Japanese, German and French speakers. Duolingo states it plainly: "Some AI-powered features are not available across all courses." If you're learning Welsh, Hindi or Navajo, you can pay for Max and receive only the Super benefits.
Max is a phone purchase. Duolingo's help centre says Max "cannot be purchased on web" and that "the features are only available on the mobile app", and that a subscription bought on the web cannot currently be upgraded to Max at all. If you do your learning on a laptop, this tier does nothing for you.
Duolingo doesn't publish the price anywhere public — you see it in the app's Shop, billed through Apple or Google, and it varies by country and by how long a plan you buy. It sits above Super, which is the comparison that matters. It can also be bought as a family plan shared with five other people, and Duolingo's terms refer to promotional codes for extended free trials of Super or Max, so a trial may be offered to you; the length isn't published.
Beginner-level calls with a second character — a bear called Falstaff, who asks you questions and suggests phrases rather than free-forming a conversation — were announced in January 2026 as iOS-only, with the rollout said to continue through 2026. On Android your options may currently be narrower than the marketing suggests.