Copyleaks AI Detector

Detects AI-generated text and flags likely AI passages sentence by sentence

What Copyleaks AI Detector does

  • Detects AI-generated text and flags likely AI passages sentence by sentence
  • Free scans up to 25,000 characters without logging in, with a daily scan cap
  • Covers many languages; Chrome extension available

Copyleaks AI Detector — straight answers

What is Copyleaks AI Detector?

Copyleaks AI Detector is listed under AI Content Detection & Humanizers, in the Content & Media Generation category on Flocci AI Tools. Detects AI-generated text and flags likely AI passages sentence by sentence. It is freemium — a usable free tier with paid plans above it, and it lives at copyleaks.com.

Is Copyleaks AI Detector free?

Copyleaks AI Detector is freemium: there is a free tier you can work in and paid plans above it. It is one of 404 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.

What can Copyleaks AI Detector do?

Copyleaks AI Detector does 3 things the catalog singles out: Detects ai-generated text and flags likely ai passages sentence by sentence; free scans up to 25,000 characters without logging in, with a daily scan cap; covers many languages; chrome extension available.

What is the best free alternative to Copyleaks AI Detector?

Sapling AI Detector is the closest free alternative: it sits in the same AI Content Detection & Humanizers sub-category and is free. GPTZero and Pangram AI Detector also start free. The full list is on the alternatives page.

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Copyleaks AI Detector alternatives

Compare all alternatives →

GPTZero

AI Content Detection & Humanizers
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  • Free tier plus dedicated Chrome extension and AI Vision (image/document) detection
  • Hallucination detector distinct from pure AI-text detection
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Originality.ai

AI Content Detection & Humanizers
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  • Combined AI detection + plagiarism + fact-checking in one scan
  • Website-wide scanning for publishers/agencies, not just single documents
  • Detects output from ChatGPT, GPT-4, Claude, and other major model families

Winston AI

AI Content Detection & Humanizers
trialLeaving soon
  • Image and deepfake detection alongside text AI-detection
  • OCR scanning lets it detect AI text inside scanned documents/PDFs
  • HUMN-1+ website certification badge for publishers on higher tiers

Undetectable AI

AI Content Detection & Humanizers
trialLeaving soon
  • Bundles an AI humanizer with unlimited AI-detection scanning on every paid plan
  • Claims to match target "writing level" when rewriting AI text
  • White-label and non-expiring credit options for agencies

Pangram AI Detector

AI Content Detection & Humanizers
freemiumNew
  • Detects AI-generated and AI-assisted text from ChatGPT, Claude, Gemini, Grok, Llama and DeepSeek
  • Free plan with about twenty checks a day after sign-up
  • 20+ languages; lower false-positive claims than older detectors

Sapling AI Detector

AI Content Detection & Humanizers
freeNew
  • Free probability score that text is AI-generated, with sentence-level highlighting
  • No account needed; up to 2,000 characters per check
  • Also PDF/Word detector and an API

Head-to-head comparisons