Originality.ai
Originality.ai AI detector API
AI detection with sentence-level highlighting; API access is on the Enterprise plan at $179/month (15,000 credits, 1 credit per 100 words for AI check, 2 credits with plagiarism). The Pro plan has no API access. $179 / 15,000 credits = $0.011933 per credit (100 words) x 10 = $0.1193 per 1K words (monthly billing, plan fully used).
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
Yes
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.