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🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Emmanuel ERNEST

AUDIO_UPDATE_SUMMARY.md

@@ -1,7 +1,7 @@
 # Audio Service Update Summary
 
 ## Overview
-The InfiniteStories audio system has been completely modernized with OpenAI's gpt-4o-mini-tts API integration and enhanced with advanced audio-illustration synchronization capabilities. This update includes protocol-based architecture, visual storytelling integration, and comprehensive queue management for seamless user experience.
+The InfiniteStories audio system has been completely modernized with OpenAI's tts-1-hd API integration and enhanced with advanced audio-illustration synchronization capabilities. This update includes protocol-based architecture, visual storytelling integration, and comprehensive queue management for seamless user experience.
 
 ## Major Features Added
 
@@ -70,7 +70,7 @@ The InfiniteStories audio system has been completely modernized with OpenAI's gp
 - Fallback logic to older TTS models
 
 **Updated:**
-- `generateSpeech()` - now uses only gpt-4o-mini-tts model
+- `generateSpeech()` - now uses only tts-1-hd model
 - Renamed internal method to `generateSpeechWithModel()` for clarity
 - Kept voice-specific instructions for optimal storytelling
 
@@ -126,7 +126,7 @@ The InfiniteStories audio system has been completely modernized with OpenAI's gp
 ### Audio Quality & Generation
 1. **Consistency**: All audio is now high-quality MP3 from OpenAI's API
 2. **Simplicity**: Removed complex fallback logic and dual-mode handling
-3. **Audio Quality**: Using gpt-4o-mini-tts with voice-specific instructions for optimal children's storytelling
+3. **Audio Quality**: Using tts-1-hd with voice-specific instructions for optimal children's storytelling
 
 ### Visual Storytelling Integration
 4. **Synchronized Experience**: Real-time illustration display matched to audio timeline
@@ -204,7 +204,7 @@ When illustration generation or display fails:
 
 ### OpenAI Integration
 The app requires a valid OpenAI API key for:
-- **Audio Generation**: gpt-4o-mini-tts for high-quality speech synthesis
+- **Audio Generation**: tts-1-hd for high-quality speech synthesis
 - **Illustration Generation**: DALL-E 3 for story scene illustrations
 - **Content Enhancement**: GPT-4o for prompt optimization
 

CLAUDE.md

@@ -47,7 +47,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 - **AIService**: Centralized OpenAI API integration with enhanced scene extraction
   - **Story Generation**: GPT-4o model (temperature: 0.8, max tokens: 2000)
   - **Scene Extraction**: AI-powered story segmentation for illustration timing
-  - **Audio Synthesis**: gpt-4o-mini-tts model with 7 specialized children's voices
+  - **Audio Synthesis**: tts-1-hd model with 7 specialized children's voices
   - **Avatar Generation**: DALL-E 3 (1024x1024, standard quality) with prompt optimization
   - **Illustration Generation**: Multi-scene DALL-E integration with consistency
   - Multi-language support (English, Spanish, French, German, Italian)
@@ -233,7 +233,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 5. **Multi-Turn Image Generation**: NEW - Each illustration references the previous image for perfect visual consistency
 6. **Custom Events**: User-defined scenarios with AI enhancement, pictograms, and usage tracking
 7. **Multi-Language Support**: 5 languages with localized prompts and voices
-8. **Audio Generation**: High-quality MP3 synthesis via gpt-4o-mini-tts
+8. **Audio Generation**: High-quality MP3 synthesis via tts-1-hd
 9. **Story Editing**: In-app editing with automatic audio regeneration
 10. **Reading Journey**: Comprehensive statistics and progress tracking with charts
 11. **Advanced Audio Playback**: Full-featured player with lock screen controls and queue management
@@ -286,7 +286,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
   - Scene segmentation for visual storytelling
   - Visual characteristic extraction for character consistency
 
-#### Audio Synthesis (gpt-4o-mini-tts)
+#### Audio Synthesis (tts-1-hd)
 - **Format**: MP3 exclusively (no fallback TTS)
 - **Voices**: 7 specialized children's storytelling voices
 - **Features**:
@@ -364,7 +364,7 @@ xcodebuild -project InfiniteStories.xcodeproj -scheme InfiniteStories \
 ### API Configuration
 1. Configure OpenAI API key in Settings view (stored in Keychain)
 2. OpenAI API is mandatory - no mock services or fallbacks
-3. Audio uses gpt-4o-mini-tts with voice-specific instructions
+3. Audio uses tts-1-hd with voice-specific instructions
 4. Multi-language support via prompt localization
 
 ## Key Technologies

IMPLEMENTATION.md

@@ -8,7 +8,7 @@ InfiniteStories is a sophisticated SwiftUI iOS app that generates personalized b
 
 - **SwiftUI**: Modern declarative UI framework with advanced animations
 - **SwiftData**: Apple's persistence framework for model storage and relationships
-- **OpenAI API**: GPT-4o for story generation and scene extraction, DALL-E 3 for illustrations, gpt-4o-mini-tts for audio
+- **OpenAI API**: GPT-4o for story generation and scene extraction, DALL-E 3 for illustrations, tts-1-hd for audio
 - **AVFoundation**: MP3 audio playback with background support
 - **Combine**: Reactive programming for real-time synchronization
 - **Keychain**: Secure API key storage
@@ -52,7 +52,7 @@ Views (SwiftUI + Illustrations) → ViewModels (Business Logic + Sync) → Servi
 - **NEW**: Hero visual profile integration for character consistency
 
 **Audio Generation**
-- Model: `gpt-4o-mini-tts`
+- Model: `tts-1-hd`
 - Format: MP3
 - Voice options with tailored instructions:
   - **coral**: Warm, nurturing bedtime voice
@@ -456,7 +456,7 @@ try response.imageData.write(to: illustrationURL)
 ### Updated Pricing (2024)
 - **GPT-4o**: ~$0.01-0.02 per story (generation + scene extraction)
 - **DALL-E 3**: ~$0.04 per illustration (3-7 illustrations per story)
-- **gpt-4o-mini-tts**: ~$0.03 per 1000 characters
+- **tts-1-hd**: ~$0.03 per 1000 characters
 - **Average story with illustrations**: ~$0.25-0.40 total per story
 
 ### Cost Optimization Strategies
@@ -588,4 +588,4 @@ InfiniteStories has evolved into a sophisticated visual storytelling platform th
 - **Graceful error handling** with intelligent retry mechanisms and beautiful fallback states
 - **Performance optimization** for smooth operation across different device capabilities
 
-The exclusive use of OpenAI's APIs (GPT-4o, DALL-E 3, gpt-4o-mini-tts) ensures consistent, high-quality content generation while maintaining strict child safety standards through advanced content policy filtering and visual consistency management.
+The exclusive use of OpenAI's APIs (GPT-4o, DALL-E 3, tts-1-hd) ensures consistent, high-quality content generation while maintaining strict child safety standards through advanced content policy filtering and visual consistency management.