The original title is: "We built a free AI face shape detector with Claude Vision and Vercel"

Short summary

Epica Beauty built a free face-shape detector using Claude's vision API and a single Vercel serverless function at ~$0.003 per analysis. The tool classifies selfies into six face shapes with confidence scores and styling suggestions. Key insight: a cheap small model performed as reliably as larger ones once the prompt was strict enough, though forcing the model to commit to one shape required significant prompt iteration.

• •Free AI face-shape detector built with Claude Vision API and Vercel serverless at ~$0.003/analysis
• •Static site with one serverless function; photos never written to disk
• •Small model matched larger ones once prompt was strict; forcing single classification was the hardest prompt-engineering challenge

Generated with AI, which can make mistakes.