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Free tier is the entry point: five scans per day, up to 750 words per scan, no payment required. Paid features such as document upload sit behind a subscription.
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AI writing checks with readability context, not just a score
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What is AI Detect?
AI Detect is an AI checker tool. A web based AI writing detector that combines a detection score with readability and grade level estimates. Free tier covers five scans per day at up to 750 words, paid plans add document upload and a humanization allowance.
AI Detect is a web based AI writing checker that pairs a detection score with readability metrics so a result can be read alongside the text it describes. Paste connected paragraphs into the detector, run a scan, and the tool returns an estimate of how strongly the passage matches AI writing patterns, plus a readability score on a 0 to 100 scale and a U.S. grade level estimate. The framing throughout the product is deliberately cautious: the score is presented as a signal for review rather than proof of authorship. he product is aimed at people who review writing rather than people who want a verdict. Teachers and admissions readers can use it as one input before a conversation about drafting history and sources. Editors and marketers can use the readability figures to judge whether a piece lands at the intended audience level. Writers can run their own drafts before submitting them. Because the free tier is small (five scans a day, capped at 750 words per scan), it suits spot checks and short samples more than bulk screening of long documents. In practice the workflow is paste, scan, then interpret. Paid subscribers can upload a supported document instead of pasting, with a 4MB drag and drop limit, and are prompted to review the extracted text and word count before scanning. A separate AI Humanizer allowance on paid plans covers revising AI assisted text for clarity and flow. Recent scans are stored in a history view, and the site warns that older scans may reflect a previous detection provider and are not directly comparable with current results, so re running a scan is the recommended way to review them. AI Detect is independent of Turnitin and GPTZero and does not claim to predict their outputs, which matters for anyone comparing scores across services. It also separates AI detection from plagiarism or similarity checking, noting that a detection score says nothing about originality or citation. That places it in the category of preliminary screening tools, best used next to source checking and human judgment rather than as a final decision maker.
How do you use AI Detect?
1Open the free detector and paste a passage
Go to the homepage detector, drop in connected paragraphs up to 750 words, and check the word counter before running anything.2Run the scan and read the detection score
Submit the text to get a percentage where higher values indicate a stronger AI writing signal. Treat it as a starting point, not a conclusion.3Review readability and grade level
Look at the 0 to 100 readability score and the U.S. grade level estimate, which answer a different question about the text than the detection score does.4Read the methodology before acting on a result
The methodology page explains what scores can and cannot show, including limits around short, edited, formulaic, and mixed origin text.5Follow the editorial checklist for revisions
The AI content detector guide walks through revising flagged work by clarifying arguments, verifying claims, and adding specific examples.6Create an account for larger limits
Signing up opens document upload for paid subscribers and a separate humanization allowance for revising AI assisted drafts.
Pros and cons
Pros
- Detection results come with readability and grade level figures, giving reviewers more than a single percentage to interpretAI
- The methodology page and on site copy state plainly that scores are a review signal, not proof of authorshipAI
- Free tier requires no payment and is usable immediately for short passagesAI
- Paid subscribers can upload supported documents with a 4MB limit instead of pasting textAI
- Clearly separates AI detection from plagiarism checking, which avoids a common misreading of scoresAI
Cons
- Free tier caps at five scans per day and 750 words per scan, which rules out screening long documents or whole classes of submissionsAI
- The tool explicitly cannot predict Turnitin or GPTZero results, so scores are not portable to the systems many institutions actually useAI
- Stored history may mix results from different detection providers, and the site admits older scores are not directly comparableAI
- No information on precision or false positive rates by text type, leaving users to judge reliability from their own samplesAI
- Detection is text only, with no coverage for images, code, or other media that also raise authorship questionsAI
How much does AI Detect cost?
Pricing
Free detection covers five scans per day at up to 750 words each with no payment required. Paid plans raise the daily scan and document limits, unlock file upload, and add a separate humanization allowance. Billing options are compared on the pricing page.
Learn moreFeatures
Detection scoring across pasted text or uploaded documents, readability scoring from 0 to 100, U.S. grade level estimates, scan history, and a separate humanization tool for revising AI assisted drafts. Paid plans raise scan and document limits.
Learn moreFrequently asked questions about AI Detect
How much does AI Detect cost?
Free detection covers five scans per day at up to 750 words each with no payment required. Paid plans raise the daily scan and document limits, unlock file upload, and add a separate humanization allowance. Billing options are compared on the pricing page.Does AI Detect offer a free trial?
Free tier is the entry point: five scans per day, up to 750 words per scan, no payment required. Paid features such as document upload sit behind a subscription.How do you use AI Detect?
The walkthrough on this page covers 6 steps: 1. Open the free detector and paste a passage 2. Run the scan and read the detection score 3. Review readability and grade level 4. Read the methodology before acting on a result 5. Follow the editorial checklist for revisions 6. Create an account for larger limits.What platforms does AI Detect support?
AI Detect is available on Web App.What are the limitations of AI Detect?
Free tier caps at five scans per day and 750 words per scan, which rules out screening long documents or whole classes of submissions. The tool explicitly cannot predict Turnitin or GPTZero results, so scores are not portable to the systems many institutions actually use. Stored history may mix results from different detection providers, and the site admits older scores are not directly comparable.
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Added10/21/2026
Platforms
Web App
Pricing
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