Aidetectorwriter
Aidetectorwriter · AI Detection
Aidetectorwriter is a free browser-based AI content detector. You paste text or upload a file, and it marks the sentences that look machine-written, shows a human versus AI split, and exports a PDF report.
About Aidetectorwriter
What Is Aidetectorwriter
Aidetectorwriter is a web page that answers one question: did a person write this, or did a language model? You drop in text, a .txt, .md, or .csv file, and the tool scores it. Results come back as a percentage split between human and AI content, with each flagged sentence highlighted and paired with a gauge for how much of that sentence looks generated.
The site covers the usual range of models, listing GPT-4, GPT-5, Gemini, and OpenAI text as detection targets. It also claims broad language coverage rather than English only, which matters if you edit material written in Spanish, Japanese, or Korean. The whole thing runs without an account and without a visible per-scan limit on the landing page.
Two limits are worth knowing before you rely on a score. A detector reads patterns, not provenance, so a clean human draft can still come back with an AI percentage, and a lightly edited machine draft can slip through. The site also doesn't publish its model architecture, training data, or error rates, so the accuracy claim stays a vendor statement rather than something you can check.
Getting Started
- Open aidetectorwriter.com in a browser. No sign-up is required for the main scan.
- Paste up to 300,000 characters into the box, or upload .txt, .md, or .csv files.
- Start the scan and let the progress bar run.
- Read the results: overall human versus AI percentage, then sentence-level highlights.
- Download the PDF report if you need a record for an editor, a client, or a submission.
Product Information
A quick look at Aidetectorwriter's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Editors and content managers
- Teachers and tutors
- Freelance writers and agencies
- Students checking their own work
Tasks
- Screening a submitted article
- Checking a mixed draft
- Comparing two versions of the same piece
- Batch review of short files
Scenarios
- Publishing workflows
- Classroom submissions
- Localization review
Key features
Sentence-Level Highlighting
Instead of one number for the whole document, the tool colors individual sentences and attaches a gauge to each one. You can see whether the opening is fine and the conclusion is the problem, which is the part a single score hides. For a long article, that turns a vague verdict into a short list of lines to rewrite.
300,000 Character Limit per Scan
The input box accepts up to 300,000 characters in one pass, which covers a full feature article, a report chapter, or a set of product pages. Most free detectors cap you at a few thousand characters and ask you to split the work. Here you paste once and read one result.
File Upload and Batch Mode
Beyond pasting, the site takes .txt, .md, and .csv files. The batch view accepts several files at once and checks them inside a dashboard, so a folder of drafts doesn't need one browser tab each. That is the difference between checking one article and cleaning up a backlog.
PDF Report Export
Every scan can produce a PDF report that records the split between human and AI content. The file travels well: you can attach it to an email, hand it to a client, or keep it next to a submission. The site generates it automatically, so there's no separate export step to hunt for.
Multilingual Detection
The site says its model was trained across languages and supports content beyond English. In practice that means a Spanish or Japanese draft gets a real score instead of a low-confidence guess. Coverage for smaller languages is not documented, so treat non-English scores as a signal and not a ruling.
No Account, No Scan Cap on the Front Page
The main detector works from the landing page without registration. You don't hand over an email to get a result, and the site presents the tool as free without stated limits. For occasional checks, that removes the friction that paid detectors add before the first scan.
Pros and cons
Pros
- Free to use without an account, so a quick check costs nothing and leaves no profile behind.
- Sentence-level highlights and gauges make the result actionable instead of a single opaque percentage.
- The 300,000 character limit handles full articles and reports in one paste.
- .txt, .md, and .csv uploads plus batch mode suit people working through folders of drafts.
- PDF export gives you a dated record to share with clients, editors, or schools.
Cons
- No published accuracy figures, model details, or false positive rate, so the precision claim rests on the vendor's word.
- A score describes patterns in the text, not who wrote it, which means a clean human draft can still be flagged.
- There's no API or documented integration, so teams can't wire the check into a CMS or a publishing pipeline.
- Coverage for less common languages is undocumented, which makes non-English results harder to trust.
Frequently asked questions
It looks for patterns typical of machine-generated text, such as uniform sentence rhythm and predictable word choice, and reports how much of a document reads as AI-written. It names GPT-4, GPT-5, Gemini, and OpenAI models as targets. It does not prove authorship.
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