AI Comparison

A .NET MAUI app that compares local, cloud, and hybrid AI approaches for text summarization. Demonstrates Apple Intelligence (on-device), Azure OpenAI (cloud), and hybrid patterns that combine both.

Demo

https://github.com/davidortinau/AiComparison/raw/refs/heads/main/media/aicomparison_demo.mp4

Requirements

• .NET 10 SDK
• For iOS/macOS: Xcode 16+ and macOS
• For Android: Android SDK
• Azure OpenAI resource (for cloud features)

Build

# All platforms
dotnet build src/AiComparison.csproj

# Specific platform
dotnet build src/AiComparison.csproj -f net10.0-maccatalyst
dotnet build src/AiComparison.csproj -f net10.0-ios
dotnet build src/AiComparison.csproj -f net10.0-android

Run

# Mac Catalyst
dotnet build src/AiComparison.csproj -f net10.0-maccatalyst -t:Run

# iOS Simulator
dotnet build src/AiComparison.csproj -f net10.0-ios -t:Run

Configuration

Set Azure OpenAI credentials via environment variables:

export AZURE_OPENAI_ENDPOINT="https://your-resource.cognitiveservices.azure.com/"
export AZURE_OPENAI_DEPLOYMENT="gpt-4o-mini"
export AZURE_OPENAI_KEY="your-api-key"

Or edit src/appsettings.json.

Features

Scenarios

Power: Compare raw summarization speed and quality across all providers.

Privacy: Analyze health records with PII protection. Local AI works directly, cloud is blocked, and hybrid anonymizes data before cloud processing.

AI Services

Service	Description
Local	Apple Intelligence on-device. Requires iOS/macOS 26+.
Cloud	Azure OpenAI. Requires network and API credentials.
Hybrid	Local summarizes chunks, cloud synthesizes final result. Handles large documents.
Privacy Hybrid	Local anonymizes PII, cloud processes, local restores original values.

Benchmarks

Each summarization tracks:

• Total time (ms)
• First token latency (ms)
• Tokens per second
• Memory delta (MB)

Project Structure

src/
  Services/       # AI service implementations
  ViewModels/     # MVVM view models (CommunityToolkit.Mvvm)
  Models/         # Data models
  MainPage.xaml   # Main UI
  MauiProgram.cs  # App configuration and DI setup

Dependencies

• Microsoft.Extensions.AI
• Azure.AI.OpenAI
• CommunityToolkit.Mvvm
• Microsoft.Maui.Essentials.AI (Apple Intelligence)