AI or Not vs Sightengine
Two AI detectors, compared using only what each vendor says on its own pages. Witness is a third option, so we keep this to stated facts.
Side by side
| AI or Not | Sightengine | |
|---|---|---|
| Built for | Developers and businesses that detect AI-generated images, text, video, audio and deepfakes via API (homepage: 'AI Detection API For All Content Types'). | Teams that add automated AI-generated image, deepfake, video, voice and music detection, plus content moderation, to their products via API. |
| Media covered | Image, Video, Audio, Text | Image, Video, Audio |
| Free option | yes: Free plan with $5 in free credits, 1M words of AI text detection free every month, 20 AI image checks, API key included. | yes: Free Tier, 2,000 operations per month (max 500/day), includes basic content moderation and AI detection; AI Image Detection included, AI Video Detection not included on Free. |
| Pricing | Free $0; Pro $5/month; Business $100/month; Enterprise Custom | Free $0; Starter $29/mo; Pro $99/mo; Enterprise Custom |
| API | yes | yes |
| Browser extension | Not stated on their page | Not stated on their page |
Read from vendor pages on 2026-11-13. Check their sites for current details.
Read this before relying on any detector
- Witness reports a likelihood with a confidence score. It does not prove anything on its own.
- No detector catches every image. New generators can be missed until detection catches up, and heavy compression or screenshots can lower confidence.
- A real photo can be flagged and an AI image can pass. Treat a result as one input, alongside the source, context and other checks.
Frequently asked questions
Which is better, AI or Not or Sightengine?
It depends on your use. AI or Not describes itself as built for developers and businesses that detect AI-generated images, text, video, audio and deepfakes via API. Sightengine describes itself as built for teams that add automated AI-generated image, deepfake, video, voice and music detection, plus content moderation, to their products via API.
Is there a third option?
Witness focuses on quick, plain-language checks of images and video in the browser or by API. See the comparison pages.
Sources
- aiornot.com/ read 2026-11-13
- aiornot.com/pricing read 2026-11-13
- sightengine.com/detect-ai-generated-images read 2026-11-13
- sightengine.com/pricing read 2026-11-13
Competitor details come from each vendor's own public pages on the dates shown. Products change, so check the vendor's site before you decide.
Related
Don't guess. Witness it.
Free to try. No account needed for your first scans. Witness gives a likelihood with a confidence percentage, not a certainty.