Decopy AI detector

The free tier is stated in three places and none gives a word figure. The product page offers "free trial basic checks" and says "Basic detection does not require account registration" (read 9 November 2026). A notice built into the page reads "You have reached the usage limit for today. Please come back tomorrow", with no daily number. The pricing page's Free plan is $0 with "10 quotas" and "10 credits" a month, "Limited basic features" and "A few trials of premium features" (decopy.ai/pricing, read 9 November 2026). The pricing FAQ explains the two currencies: "Quotas are mainly used for basic detection functions (such as AI detection and OCR recognition)" while "Credits are a premium currency, specifically for core advanced features (such as Humanize AI Rewrite or Deep Plagiarism Check)". Because neither a quota nor a credit is a word, the card records no free words per month and Decopy sits in the second table of the free tiers ranking.

The pricing page shows a Monthly and Annually toggle with a "30% OFF" badge on the annual side and a USD label. Figures below are as displayed, read 9 November 2026.

The feature table on the same page marks the AI Content Detector as "Use premium credits" on Lite and Basic and "Unlimited" on Premium, and the FAQ adds that monthly credits and quotas "will reset at the end of each billing cycle" while top-up credits "never expire" (decopy.ai/pricing, read 9 November 2026). The FAQ's advice on which currency to watch is the plainest statement of the suite's purpose: "If your main goal is to pass AI detection, please pay attention to the number of 'Credits' you have."

Retention is stated for the account, not the text. The detector FAQ says "Uploaded files and AI detection results are kept private. They are not made public or shared with other users. Decopy does not permanently save your content, and you can delete history records or uploaded documents anytime" (decopy.ai/ai-detector, read 9 November 2026). The privacy policy of 24 March 2026 says personal information is kept "only for as long as necessary" and that the company is "not required to retain your personal information for more than three (3) months after the termination of your user account" (decopy.ai/privacy-policy, read 9 November 2026). Neither page states a period for submitted text, so the card has no retention figure and the data retention ranking quotes the FAQ in its unranked table.

Decopy states no accuracy rate and no false positive rate. The product page's own caveat is the nearest thing to a claim: "While Decopy AI Detector is built with advanced technology, no AI detection tool can be 100% accurate" (decopy.ai/ai-detector, read 9 November 2026). The mission section claims "Free to use, no login required, lowest character threshold in the industry" without stating the threshold. With no percentage on the page, the card is absent from the false positive ranking and there is nothing for the claim versus evidence gap to compute.

The page's caveats are long and specific. "A high AI score does not automatically mean dishonest writing, and a low score does not prove originality or quality." "We strongly recommend not relying solely on any AI content detector when making decisions that could affect your academic standing, professional reputation, or legal responsibilities." The FAQ for educators says results are "a review signal, not as the only basis for judgment". The same page then sells the fix: under "What should I do if my writing is flagged as AI-generated?" it advises "You can also use our AI humanizer to rewrite overly predictable sentences", and the mission section describes a Humanizer that "rewrites AI-style content in a human, personal tone" (read 9 November 2026). Decopy makes no claim to detect paraphrased or humanized text.