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Ranked by measurement

Best AI content detector

20 tested · top 20 shown

2 more could only be measured on fewer than five frames, so they are not ranked here — a partial average is not comparable with a full one.

Ordered by a seven-frame production-readiness benchmark measured from each product's public surface — not popularity, pricing or feature count. Nobody pays to appear here and the order is never edited. How it is measured →
How this field scores
low 55median 78best 96
  1. 1
    Copyleaks
    Copyleaks is an AI and plagiarism detection service for text and images.
    Perf 91
    Acce 91
    Sec 100
    Priv 100
    Rel 100
    Std 92
    Disc 100
    copyleaks.com · measured 2026-10-31
    7/7 frames
  2. 2
    OmniDetect
    AI content detector that flags passages, shows evidence, and suggests rewrites.
    Perf 73
    Acce 92
    Sec 80
    Priv 100
    Rel 100
    Std 92
    Disc 100
    omnidetect.ai · measured 2026-11-05
    7/7 frames
  3. 3
    GPTOne
    GPTOne is an AI writing tool offering detection, humanization, and grammar checks.
    Perf 66
    Acce 96
    Sec 100
    Priv 75
    Rel 100
    Std 92
    Disc 100
    gptone.me · measured 2026-10-28
    7/7 frames
  4. 4
    SiteTell
    SiteTell scans your entire site for AI-sounding copy and shows you how to fix it.
    Perf 99
    Acce 94
    Sec 80
    Priv 100
    Rel 100
    Std 89
    Disc 70
    getsitetell.com · measured 2026-11-10
    7/7 frames
  5. 5
    GPTZero
    GPTZero detects AI-generated content from tools like ChatGPT, Claude, and Gemini.
    Perf 45
    Acce 92
    Sec 90
    Priv 100
    Rel 100
    Std 89
    Disc 100
    gptzero.me · measured 2026-11-06
    7/7 frames
  6. 6
    Seedance Check
    Free tool to check whether a video was generated by Seedance AI.
    Perf 91
    Acce 93
    Sec 25
    Priv 100
    Rel 100
    Std 100
    Disc 100
    checkseedance.com · measured 2026-10-30
    7/7 frames
  7. 7
    Callinf
    Browser-based real-time AI speech detector for live calls and recorded files.
    Perf 77
    Acce 96
    Sec 45
    Priv 75
    Rel 100
    Std 100
    Disc 100
    callinf.com · measured 2026-10-27
    7/7 frames
  8. 8
    slop calculator
    Slop Calculator checks whether your website looks like generic AI-generated content.
    Perf 100
    Acce 95
    Sec 45
    Priv 25
    Rel 100
    Std 100
    Disc 100
    slopcalculator.com · measured 2026-11-08
    7/7 frames
  9. 9
    unslop
    AI-text detection tool for scientific writing, free and without sign-up.
    Perf 99
    Acce 97
    Sec 45
    Priv 25
    Rel 100
    Std 100
    Disc 100
    unslop.run · measured 2026-10-15
    7/7 frames
  10. 10
    DetectGPT
    Free AI-content detector that checks drafts from ChatGPT, Claude, Grok, and other models.
    Perf 89
    Acce 92
    Sec 25
    Priv 75
    Rel 75
    Std 100
    Disc 100
    detectgpt.io · measured 2026-11-08
    7/7 frames
  11. 11
    Turnitin AI Detector
    A web tool that checks essays and academic drafts for AI-generated writing patterns.
    Perf 87
    Acce 93
    Sec 25
    Priv 75
    Rel 100
    Std 92
    Disc 75
    turnitindetector.ai · measured 2026-11-02
    7/7 frames
  12. 12
    Plagiarism Checker Plus
    Word-based plagiarism and AI detection service with citation and grammar tools.
    Perf 63
    Acce 97
    Sec 25
    Priv 75
    Rel 100
    Std 81
    Disc 100
    plagiarismcheckerplus.com · measured 2026-10-30
    7/7 frames
  13. 13
    TChecker AI
    Independent AI detector that checks essays and assignments for AI-like writing.
    Perf 89
    Acce 88
    Sec 25
    Priv 75
    Rel 100
    Std 92
    Disc 60
    turnitin.report · measured 2026-11-02
    7/7 frames
  14. 14
    Robot (Claude or ChatGPT) or Meatbag?
    A browser-based toy that guesses whether text was written by Claude Opus 5 or a human.
    Perf 99
    Acce 100
    Sec 45
    Priv 25
    Rel 67
    Std 92
    Disc 85
    meatbag.atomic14.com · measured 2026-11-04
    7/7 frames
  15. 15
    Veris
    Veris scans social media posts to detect AI-generated content.
    Perf 83
    Acce 100
    Sec 45
    Priv 25
    Rel 100
    Std 85
    Disc 60
    veris-app.grok.me · measured 2026-10-27
    7/7 frames
  16. 16
    AI Text Detector
    Free browser-based tool that scores text for AI-generated content.
    Perf 100
    Acce 87
    Sec 70
    Priv 25
    Rel 100
    Std 85
    Disc 15
    kouh.me · measured 2026-11-09
    7/7 frames
  17. 17
    Turnitin0
    Preview Turnitin AI detection and similarity reports before submitting your paper.
    Perf 87
    Acce 98
    Sec 25
    Priv 0
    Rel 75
    Std 97
    Disc 100
    turnitin0.com · measured 2026-11-06
    7/7 frames
  18. 18
    isitslop
    Free, open-source AI writing detector for English and Spanish. Paste your text and see if it reads like AI.
    Perf 99
    Acce 96
    Sec 25
    Priv 25
    Rel 92
    Std 92
    Disc 47
    isitslop.xyz · measured 2026-10-27
    7/7 frames
  19. 19
    AI Detector
    Web tool that detects AI-generated text with sentence-level explanations and no sign-up required.
    Perf 78
    Acce 81
    Sec 25
    Priv 25
    Rel 75
    Std 92
    Disc 45
    aidetector.my · measured 2026-10-27
    7/7 frames
  20. 20
    OriginAl
    Chrome extension that detects and blurs AI-generated text on any website.
    Perf 100
    Acce 100
    Sec 45
    Priv 25
    Rel 47
    Std 67
    Disc 0
    origin-ai-one.vercel.app · measured 2026-10-16
    7/7 frames
What this does not say
This ranks how production-ready each product's public surface is — not how well it does its job. For ai content detector, that means it does not measure the quality of the work itself. Products whose sites block automated readers are left out rather than ranked last — we did not measure them, and bottom placement would claim something we never observed. Scores are floors: anything set at a CDN, a proxy or behind a login is invisible from the public surface.

All measured categories → · Browse the directory →