LanguageMouth Coach — AI Pronunciation & Biomechanical Mouth Tracking Coach

Overview: LanguageMouth Coach is an AI-powered visual pronunciation, phonetic articulatory analysis, and biomechanical speech coaching platform. Powered by Gemini 2.5 Flash through Sensifai's LiteLLM gateway, LanguageMouth Coach inspects the exact physical shape of a speaker's mouth, lip geometry, jaw aperture, and tongue elevation, comparing them against native phonetic benchmarks across 12+ international languages to provide instant, actionable muscle drills.

The Problem: Over 70% of language learners and speech therapy patients struggle with stubborn pronunciation errors because audio-only apps can only tell them what sounded wrong, not WHERE to physically position their tongue, lips, and teeth. Traditional speech therapists cost upwards of €100/session with long wait times.

The Solution: LanguageMouth Coach turns any smartphone camera or webcam into a real-time speech biomechanics tutor. By pairing computer vision with articulatory phonetics, learners receive a comprehensive Articulatory Scorecard, sagittal vocal tract cross-section diagrams, lip rounding metrics, and tailored 3-step muscle coaching drills in under 4 seconds.

Key Capabilities: Multimodal intake (live webcam snap, image upload, audio recording, curated phoneme benchmarks); Interactive Phoneme & Minimal-Pair Selector (/θ/, /ð/, /ɹ/, /l/, /y/, /ç/, /ʁ/, /ʕ/, etc.); Articulatory Scorecard (0-100 Pronunciation Accuracy, Lip Rounding, Tongue Placement, Jaw Opening); Interactive Vocal Tract Cross-Section Anatomy Diagrams; Step-by-Step Physical Muscle Drills; Spoken Audio Feedback; Ephemeral 24-Hour Privacy Retention; Pay-As-You-Go Metered Billing via Sensifai (€0.05 / session).