This tutorial demonstrates how to build an AI-powered image processing API using Bun, Hono, and bun-image-turbo that delivers sub-200ms performance. The system integrates OpenAI GPT-4 Vision and Anthropic Claude for intelligent image analysis, generating WCAG-compliant alt text, performing face detection for smart auto-cropping, and running content moderation to flag NSFW content before database storage. Key capabilities include OCR text extraction, auto-tagging for search, and parallel processing architecture that achieves 950x faster performance than Sharp.

The article provides complete TypeScript implementations for the AI service layer, face detection system, and production-ready upload endpoints with batch processing support. Cost analysis shows the solution costs approximately $25-36 per month for 10,000 images, with free moderation via OpenAI's API. Real-world use cases cover e-commerce SEO automation, social media content moderation, and document management systems.