AI-generated faces are indistinguishable from real ones. Here's how to tell

AI‑generated portraits have reached a level of realism that can fool even attentive human observers. For developers building media‑processing pipelines, content moderation systems, or forensic tools, knowing how to separate synthetic faces from genuine photographs is increasingly important. Below is a practical guide that walks through the tell‑tale signs of AI‑crafted faces, the underlying reasons they appear, and a ready‑to‑run code sketch you can adapt to your own detector.