Duolingo owns language learning. The AI tutor isn't Duolingo.

Ask the assistants for the best language-learning app and the answer is the most lopsided I've measured. Duolingo is named in more than four in ten grounded answers, and nothing else in language learning comes close. Babbel and Pimsleur follow at a distance; italki and Busuu fill the middle. If a category ever looked locked, this is it.

Then I changed one word. Ask for the best AI app to learn a language and Duolingo all but disappears. The assistants, and Google's AI Overview with them, name Langua and Speak, with Praktika close behind: AI-native newcomers built around spoken conversation, none of them household names. The category leader barely places.

The famous name wins the generic question and loses the specific one. "Best language app" belongs to Duolingo; "best AI language app" belongs to apps most people have never heard of.

For a marketer that is the whole game in one category. Duolingo owns the broad, high-volume query, the one a beginner actually types. But the queries that signal where the category is going, the ones about AI tutoring, are wide open, and a brand with no legacy at all is winning them. Incumbency on the generic question is no protection on the next one.

The assistant won't name itself

There's a recursive twist here. The most obvious AI language tutor is the assistant you are already talking to. You can practise Spanish with ChatGPT right now, for free. So when Google's AI Overview is asked for the best AI-powered way to learn a language, you'd expect it to mention a chatbot. It doesn't. It recommends dedicated apps, Langua and Speak, and names neither ChatGPT nor its own Gemini.

That's the mirror image of the bias I went looking for in the AI apps category, where the fear was that assistants would crown themselves. Here, asked about a job they could plausibly do, they point you somewhere else. Whether that's restraint or just that the grounded web doesn't frame chatbots as "language apps," the surface is steering users toward the specialists, not toward itself.

What this is

Thirty-five questions put to four AI assistants, plus Google's AI Overviews captured from the web. US English. A preview. The prompt set was validated against real Google autocomplete demand before it was fixed, including the "Duolingo alternative" and "AI tutor" intents that drive this finding. See the language index for the full board.