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How to Tell If a Face Is AI Generated: Step-by-Step Guide

Published April 2, 2026 by Which One is AI Team

AI-generated faces have become remarkably convincing. Tools like Midjourney, Stable Diffusion, and DALL-E can produce portraits that fool most people at first glance. But if you know where to look, telltale signs still give these synthetic faces away. This guide walks you through a systematic process for examining any portrait and deciding whether it was created by a human photographer or an AI model.

Step 1: Start with the Eyes

The eyes are often the most revealing feature in an AI-generated face. Begin by zooming in on both eyes and comparing them side by side.

• Iris patterns: In a real photograph, the iris has a complex, organic texture with radial fibers and slight color variations. AI-generated irises sometimes appear too smooth, too patterned, or contain unusual shapes within the color ring.
• Reflections: This is one of the strongest tells. In a real photo, both eyes reflect the same light source in roughly the same position. AI images frequently show mismatched reflections, with different shapes, different positions, or entirely different scenes reflected in each eye.
• Pupil shape: Real pupils are consistently round (or consistently affected by medical conditions). AI sometimes produces slightly irregular or non-circular pupils, especially in one eye but not the other.
• Eyelashes: Check whether eyelashes look naturally spaced and curved. AI may produce lashes that merge together, clip through the eyelid, or appear painted on rather than individually rendered.

Step 2: Examine the Hairline

Hair remains a significant challenge for image generators because of the sheer number of fine details involved.

• Transition zone: Where hair meets the forehead and temples, real photos show a gradual, natural transition. AI often produces a hard edge or a smeared, blurry zone where the hair meets the skin.
• Strand consistency: Look for individual strands, especially around the edges of the hair. AI-generated hair may look like a solid mass rather than thousands of individual strands. Flyaway hairs, if present, may follow unnatural paths or dissolve into artifacts.
• Behind the ears: Check where hair passes behind or around the ears. This area is particularly prone to AI errors such as strands merging with the ear, disappearing abruptly, or passing through solid structures.

Step 3: Look at the Ears

Human ears are naturally asymmetric, but they share the same basic structure. AI-generated ears can look subtly wrong in ways that are hard to pin down at first.

• Structural consistency: Compare the left and right ear. Both should have a helix, antihelix, tragus, and earlobe. AI sometimes simplifies or distorts these structures, producing ears that look slightly melted or overly smooth.
• Earrings and piercings: If the face has earrings, check that they are consistent on both sides and that the jewelry interacts naturally with the earlobe.

Step 4: Inspect the Teeth and Mouth

AI models have a tendency to produce teeth that look a little too perfect or a little too wrong.

• Uniformity: Real teeth have slight size variations, small gaps, and natural imperfections. AI-generated teeth are sometimes unnervingly uniform, like a row of identical white tiles.
• Tooth count: Zoom in and count the visible teeth. AI sometimes generates too many or too few teeth for the size of the mouth.
• Gum line: The gums should transition naturally from tooth to lip. AI may produce an uneven gum line, teeth that float above the gums, or gums that blend into the teeth without a clear boundary.

Step 5: Study the Skin

Skin texture is a subtle but powerful indicator when examined carefully.

• Pore patterns: Real skin has visible pores, especially on the nose, cheeks, and forehead. AI-generated skin sometimes appears too smooth across the entire face, or shows pores in some areas but not others.
• Texture under different lighting: Look at how the skin texture changes between highlighted and shadowed areas. Real skin maintains its texture across lighting zones. AI may produce skin that looks plastic or waxy in certain lighting areas while appearing realistic in others.
• Blemishes and asymmetry: Real faces have moles, freckles, slight redness, and pores distributed unevenly. A face that is perfectly symmetrical and blemish-free across every zone deserves extra scrutiny.

Step 6: Check the Background Near the Face

The area immediately surrounding the face often contains critical clues.

• Edge artifacts: Look at the boundary where the face meets the background. AI-generated images sometimes produce a slight glow, blur, or color shift along this edge.
• Background coherence: If the background contains objects, text, or architecture, check whether they are logically consistent. Warped lines, impossible structures, or smeared details near the face boundary can indicate AI generation.

Putting It All Together

No single tell is conclusive on its own. A real photo might have slightly mismatched lighting, and an AI image might nail every detail except one. The key is to work through each step methodically. If you find multiple issues across different areas of the face, you can be increasingly confident the image is AI-generated.

For a broader overview of detection techniques beyond faces, see our guide on how to spot AI-generated images. If you want to practice identifying AI portraits specifically, try our AI Portraits challenge.