Speak is a language-learning app built around one thing: getting words out of your mouth.
It's made by Speakeasy Labs. OpenAI's models (a model is the AI "brain" that does the actual thinking) power the conversation side, and on 10 September 2026 Speak announced a limited rollout of live tutor conversations built on OpenAI's newest voice model.
It teaches English to speakers of fifteen languages — Korean, Japanese, Traditional and Simplified Chinese, Spanish, French, German, Italian, Portuguese, Polish, Vietnamese, Hindi, Thai, Turkish and Indonesian — and teaches Spanish, French, Japanese, Korean, Italian and Simplified Chinese to English speakers. Speak's help centre, updated 3 July 2026, states the catch plainly: non-English courses exist only if your native language is English.
Why pick it over Duolingo, which is free: Duolingo lets you go months tapping multiple-choice answers without ever saying a full sentence, and Speak doesn't.