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AI Content Detectors

AI content detectors check text or images for signs that they were generated by AI. Compare the content types they support, the detail of their results, and whether you need a standalone checker, academic review tools, or an API. Treat detection results as signals to investigate rather than proof of authorship.

Top picks

  1. 1

    GPTZero

    Freemium    GPTZero is best for reviewing text for AI-generated content alongside information about the writing process.
  2. 2

    Turnitin

    Contact for pricing    Turnitin is best for academic assessment workflows that combine AI-writing checks with text similarity review.
  3. 3

    Undetectable AI

    Free trial    Undetectable AI is best for writers who want AI-content checks and text rewriting in one tool.
  4. 4

    AI Detector

    Freemium    AI Detector is best for examining text with sentence-level scores and checks from multiple detectors.
  5. 5

    Sightengine

    Freemium    Sightengine is best for developers adding AI-generated media detection, content moderation, and image analysis through APIs.

All AI Content Detectors

  • GPTZero

    AI Content Detectors

    Check text for AI-generated content and review the writing process.

    Freemium

  • Turnitin

    AI Content Detectors

    Check writing for AI use and text similarity, and support secure academic assessment.

    Contact for pricing

  • Undetectable AI

    AI Humanizers

    Detect AI-generated content and rewrite text for a more natural writing style.

    Free trial

  • ZeroGPT

    AI Content Detectors

    Check text for AI-generated content and plagiarism, with tools for editing and rewriting.

    Freemium

  • Scribbr

    AI Writing Assistants

    Academic writing tools for proofreading, AI detection, paraphrasing, and citations.

    Freemium

  • AI Detector

    AI Content Detectors

    Check text for AI-generated writing with sentence-level scores and multiple detectors.

    Freemium

  • GPTinf

    AI Humanizers

    Writing toolkit that humanizes AI text and checks drafts for AI signals and plagiarism.

    Freemium

  • Sightengine

    AI Content Detectors

    APIs for content moderation, AI-generated media detection, and image analysis.

    Freemium

  • JustDone

    AI Writing Assistants

    AI tools for drafting, rewriting, checking originality, and studying.

    Paid

  • MyDetector

    AI Content Detectors

    Check text for signs of AI writing with scores and sentence-level analysis.

    Freemium

  • GradPilot

    AI Writing Assistants

    Get rubric-based admissions essay feedback, scores and AI-writing detection.

    Freemium