Copyleaks
Copyleaks AI Detector
AI content detector plan reported at $7.99/month for 1,200 credits with API access; one credit covers up to 250 words. $7.99 / (1,200 credits x 250 words = 300,000 words) = $0.0266 per 1K words. Sample estimate: Official page returned 403; figures from third-party reviews (Capterra, Toolradar, Fast.io), which conflict with other sources.
Capabilities, explained
What this API can do, and what each capability means for your project.
Sentence highlights
Yes
Marks which sentences look generated, not only one score for the whole text.
Plagiarism check
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Can also check the text against existing sources for copying.
Names the model
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Estimates which AI model produced the text.
Languages
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Approximate number of languages it can score.
Price history
Only one price recorded so far. The chart appears once the price changes.