NewEnglish · Español · Русский · Српски

Every language,
within orbit.

Learn English, Spanish, Russian or Serbian with short lessons from A1 to C2, real audio, quizzes, and an AI tutor you can text or talk to.

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4 languages · 12 learning pairs · CEFR A1 → C2
kosmolingo.com/en/learn/sr
A1 · Unit 4 · At the café
кафа
coffee /ˈkafa/ · kafa · noun, f.
Кафу са млеком, молим.
A coffee with milk, please.
Quick check — Желим једну ___ . (кафа)
кафа
кафу ✓
кафе
Unit progress 64%
AI TutorTextVoice
How do I ask for the bill?
Say «Рачун, молим.»Račun, molim. — The bill, please.
Рачун молим вас
Perfect 👏 Add a comma for writing: Рачун, молим вас. Want to role-play ordering first?
Ask your tutor anything…
4languages to learn & use
12learning pairs
A1 → C2CEFR-aligned levels
24/7AI tutor, text & voice
Languages

Your language in.
Any language out.

Pick the language you speak and the one you want to learn. The whole site switches to your language — menus, explanations, translations and tutor.

12 learning pairs

Every combination of English, Spanish, Russian, Serbian.

EN
ES
RU
SR
English
—
EN→ESEN→RUEN→SR
Español
ES→EN
—
ES→RUES→SR
Русский
RU→ENRU→ES
—
RU→SR
Српски
SR→ENSR→ESSR→RU
—
rows: I speakcols: I learn

An interface that speaks back

Native-language explanations make grammar click faster, from day one.

EN
Welcome back
Continue your lesson
ES
Bienvenido
Continúa tu lección
RU
С возвращением
Продолжить урок
SR
Добро дошли
Наставите лекцију
Lessons

Everything you need to actually speak.

Structured by the Common European Framework, so you always know where you are and what comes next.

A1
A2
B1
B2
C1
C2

CEFR levels A1 – C2

A clear path from first words to full fluency, with units that build on each other.

helloholabookкнигаcityградfriendamigowaterводаto travelпутоватиtomorrowзавтра

Vocabulary that sticks

Themed word sets with spaced review, so words come back right before you forget them.

Audio pronunciation

Hear every word and sentence, at normal or slow speed.

Я ___ в Москве.
живу
живёт

Quizzes

Quick checks after every lesson to lock in what you learned.

72%B1

Progress tracking

Streaks, levels and words learned, synced across devices.

ES La cuenta, por favor.The bill, please.
RU Я живу в Белграде.I live in Belgrade.
SR Видимо се сутра у девет.See you tomorrow at nine.

Real example sentences

Natural sentences with translations, so you learn words the way people actually use them.

123␣↵

Keyboard friendly

Answer, play audio and move on without touching the mouse.

AI Tutor

A patient tutor, whenever you are ready.

Practice real conversations, get instant corrections, and ask “why?” as many times as you like.

Text Tutor

Chat to learn

  • Grammar explained in your own language
  • Gentle corrections on everything you write
  • Role-plays: café, airport, job interview
Yo soy 25 años.
Almost! In Spanish you have years: soy → tengo 25 años.
Voice Tutor

Talk to learn

  • Live spoken conversation at your level
  • Feedback on pronunciation and fluency
  • Speak without fear of judgement
«Привет! Расскажи, как прошёл твой день?»Hi! Tell me, how was your day?
● Listening · Russian · B1 · 04:12
Pricing

About the price of a coffee a month.

One simple plan for every lesson. Add an AI tutor only if you want one.

◆ DRAFT PRICING — not final
Kosmolingo ALL LESSONS
$5/ month
or $39.99 / year
  • All 4 languages, all 12 pairs
  • Every level, A1 to C2
  • Vocabulary, sentences & audio
  • Quizzes & progress tracking
  • Interface in your language
Start learning
AI Text Tutor ADD-ON
$3.99/ month
TO BE DETERMINED
  • Chat with your AI tutor
  • Instant corrections & explanations
  • Role-play scenarios
  • Monthly message limit: to be determined
AI Voice Tutor ADD-ON
$7.99/ month
TO BE DETERMINED
  • Spoken conversations in real time
  • Pronunciation feedback
  • Level-matched topics
  • Monthly minutes: to be determined

added to any plan · limits TBD · Payments are not live yet — this is a preview.

Start your first lesson today.

For anyone who wants to learn a language: travelers, students, families and the endlessly curious.