Freemium

Sightengine

Content moderation API covering images, video, live streams, text, audio and even QR codes, with 120+ image moderation classes.

4.0 Security & Compliance AI
4.0 Very good 4.0

Bottom line: Sightengine is a strong security & compliance ai tool, best known for image moderation across 120+ classes. It has a free plan.

Covers formats most moderation vendors leave gaps in, including QR codes Classifiers produce false positives and negatives at any threshold
Reviewed by Challenging Voice Editorial · Updated Aug 2026 How we rate
PricingFree
Free planYes
CompanySightengine
PlatformsWeb
Best forSecurity & Compliance AI
Last reviewedSep 2026
UpdatedAug 2026
Ask AI about Sightengine ChatGPT Claude Perplexity

Overview

Sightengine is a content moderation API spanning every format user-generated content actually arrives in: images with 120+ moderation classes, video and live streams, text, audio with profanity detection, and OCR plus QR code moderation.

The breadth is the point, because moderation gaps get found and exploited fast. A platform that screens images but not the text inside them, or the QR code in the corner of a photo, has left the obvious route open – and QR moderation in particular is a detail most vendors miss entirely despite it being a standard way to route users off-platform to something worse.

Live stream support matters for anyone whose risk is real-time rather than reviewable after the fact. Two things to plan for regardless of vendor: classifiers produce false positives and negatives at any threshold you pick, so build a human appeal path, and moderation thresholds carry cultural and legal context that no API infers for you – the policy decisions remain yours.

Key features

  • Image moderation across 120+ classes
  • Video and live stream moderation
  • OCR and QR code moderation inside images
  • Text moderation and filtering
  • Audio transcription with profanity detection
  • API-first with a free tier and live demo

Screenshots & demo

Sightengine screenshot 1

Pricing

Sightengine offers a free plan, with paid upgrades for higher limits and more features.

  • Pricing modelFreemium
  • Starting priceFree
  • Free planYes
Visit Sightengine

Pricing is provided as a guide. Check the official site for the latest plans.

Is Sightengine expensive?

Sightengine has no advertised paid tier. Among the 23 priced tools we list in Security & Compliance AI, the median entry price is $99 a month.

18% of Security & Compliance AI tools in the directory offer a free tier, and this is one of them.

Compared against every priced listing in Security & Compliance AI, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.

Pros & cons

Pros

  • Covers formats most moderation vendors leave gaps in, including QR codes
  • Live stream support for real-time rather than after-the-fact risk
  • Demo and free tier let you test against your own content

Cons

  • Classifiers produce false positives and negatives at any threshold
  • A human appeal path is still required – the API does not remove that need
  • Moderation policy and cultural context remain your decisions, not the vendor's

How it compares

ToolRatingFreeFromBest known for
Sightengine (this tool)4.0YesFreeImage moderation across 120+ classes
CrowdStrike4.6No$59.99/moCloud-native Falcon sensor replacing legacy on-device antivirus signatures
Doppel4.5NoAutonomous detection and takedown of phishing infrastructure
Vanta4.4No$10,000/mo400+ integrations automatically pull audit evidence from existing systems

Alternatives to Sightengine

4 tools our editors picked as direct alternatives to Sightengine.

Our verdict

4.0 / 5 4.0

Sightengine is a strong security & compliance ai tool, best known for image moderation across 120+ classes. It offers a free plan.

What makes it different: Sightengine stands out for image moderation across 120+ classes.

How we score it
Overall 4.0
Value for money 4.7
Feature depth 4.9
Popularity 3.7
Best for ProfessionalsTeamsCreatorsCurious learners

Frequently asked questions

What is Sightengine?
Sightengine is a security & compliance ai tool listed in the Challenging Voice directory. Content moderation API covering images, video, live streams, text, audio and even QR codes, with 120+ image moderation classes.
Is Sightengine free?
Yes, Sightengine offers a free plan. Paid plans unlock more features and higher usage limits.
What are the best Sightengine alternatives?
Popular alternatives to Sightengine include AI Compliance Advisor, Sumsub, and Trulioo. Browse them all in the Security & Compliance AI category.
Is Sightengine any good?
Sightengine scores 4.0 out of 5 based on our editorial review.

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