Question 1

Is the face comparison tool free?

Accepted Answer

Yes. The live demo is completely free — no account, credit card, or signup required. Upload two photos and get instant results.

Question 2

How do I compare two faces online?

Accepted Answer

Upload two photos using the demo above. The AI extracts facial embeddings from each image and computes a similarity score from 0 to 100, along with a match or no-match verdict. Results are returned in under 200ms.

Question 3

How accurate is the face similarity checker?

Accepted Answer

Our face comparison model achieves 99.4% TAR (True Accept Rate) at 0.01% FAR (False Accept Rate) on the IJB-C benchmark — one of the most rigorous academic face verification datasets. Fewer than 1 in 10,000 comparisons produces a false match at the default threshold.

Question 4

What does the similarity score mean?

Accepted Answer

The similarity score ranges from 0 to 100. Scores above 70 typically indicate the same person; scores below 40 indicate different people. Scores between 40 and 70 are borderline depending on image quality, pose, and lighting. A match/no-match verdict is returned alongside the score.

Question 5

What types of photos work best for face comparison?

Accepted Answer

Clear, well-lit frontal face photos give the best results. The tool accepts selfies, ID document crops, and passport-style photos. Extreme angles above 45 degrees, heavy occlusion from masks or sunglasses, or very low resolution images may reduce accuracy.

Question 6

Can I use this as a facial comparison API?

Accepted Answer

Yes. The same model powering this free demo is available via REST API for production use. The API accepts two image URLs or base64-encoded images and returns a similarity score, match verdict, and confidence value in JSON. Enterprise plans include SLAs and a Data Processing Agreement.

Face similarity & comparison

Live demo

Face similarity & comparison

Live demo