Dialekt - AI-powered (spoken) language learning

Dialekt is an AI-powered language learning application that provides real-time conversational practice with adaptive feedback.

What it does

Dialekt pairs learners with an AI tutor (powered by Claude) that adjusts its responses based on the learner’s CEFR level (A1-C2) and chosen register (formal/informal). The tutor provides intelligent, context-aware feedback depending on how the learner communicates:

• Writing in native language: Shows the translation in the target language with IPA
  transcription and phonetic guides
• Practicing target language: Provides corrections and encouragement with
  grammatical feedback

Key features

• 70+ language pairs: Choose any combination of native and target language
• CEFR-based adaptation: Vocabulary and grammar automatically adjust to A1-C2
  levels
• Real-time feedback: Built with Phoenix LiveView for instant tutor responses
• Dynamic conversation starters: AI generates contextually appropriate prompts
  based on your learning configuration
• Phonetic support: IPA transcriptions use native language phonetic conventions

How it works

The app uses Claude Sonnet 4.6 via the Anthropic API to power the tutoring experience. The system prompt is carefully designed to enforce CEFR level constraints, maintain register consistency, and provide differentiated feedback based on whether the learner is practicing or just asking for translations.

Motivation

I built this mostly as a tool to help me learn new languages without the hassle of finding pronunciation guides and conversation partners. It’s just a pet project I made for fun, but I’d appreciate any feedback if you find it helpful or have ideas to improve it.

Requires an Anthropic API key to run.

https://github.com/ccarvalho-eng/dialekt