Entry 101-3 Build in Public 2 min ↩ back to the timeline

The teacher heard her lips

Live demo of Severo's voice mode: Gemini 2.5 Flash-Lite hears audio natively, so when Julia mispronounces píngguǒ it tells her to round her lips on the second syllable, feedback Anki's self-graded flashcards and Duolingo's mute red X can't give.

video fuente → Source video thumbnail
Source transmission · “0 to 1 Million” diary

// trace: where this idea came from

Database deleted on camera for an honest zero, the demo runs on Chinese fruit vocabulary, and the star feature is invisible: Gemini 2.5 Flash-Lite receives audio natively, not a transcript ▸ 24:12. When Julia attempts píngguǒ, the reply is a teacher’s, not a grader’s: first syllable clear, second needs work, “recuerda poner tus labios redondos” ▸ 26:28. Yesterday it taught him the Chinese zh via the J in jump ▸ 24:42. Phonetics coaching from a model that heard your mouth, imperfect, occasionally hallucinating a quote back at you ▸ 28:27, but categorically beyond multiple choice.

The competitive read sharpens against Anki, named the closest real rival ▸ 18:58. Its strengths are real (community decks, try-hard devotees posting five-language heatmaps), but the cracks are the pitch: community decks overlap, “la redundancia en el conocimiento”, so learners re-review what they know ▸ 20:53; reviews are self-graded, you flip the card and score yourself ▸ 21:36; and the algorithm’s endpoint is the absurd “next review: two years” ▸ 22:18. A teacher, the standing thesis, runs no such formula.

la corrección útil te dice qué hacer con la boca, no cuántos puntos perdiste →

Even the too-much-text complaint gets overturned by the name: Julia, mid-demo, rules the long feedback correct for the brand, “severo es donde te da detallitos”, against the Duolingo experience of a red X that never says why, “tú no sabes qué fue lo que hiciste mal” ▸ 32:47. Gamification, badges, sellitos, is formally postponed: “va a ser simple, lo más simple posible” ▸ 36:30. The prototype’s bet is stripped to one sentence: a teacher who can hear you is worth more than a game that can score you…

// continued in

no entry has continued this idea yet: the arc is still open

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