AI Content Detection for Windows

Find AI
with AI

AI Detective isn't anti-AI. It's pro-transparency.

Writers, publishers, educators, legal professionals, and organizations worldwide are navigating a new reality: when you receive content, you need to know if AI played a role in creating it. Not to judge—to decide. AI Detective gives you that clarity, privately and professionally, without routing your documents through our servers.

⬇ Free Download 💛 Donate Learn More
🔒 Your Data Goes Direct—Never Through Our Servers 🔒 Private by Design—Direct to Anthropic, Not Through Us 🔒 No Intermediary—API Calls Go Direct to Anthropic 🔒 Your API Key, Your Data, Your Privacy
Sample analysis output
AI
72%
Human
14%
Edited
11%
Unknown
3%
Capabilities

What AI Detective Does

AI Detective analyzes text, documents, and web pages to determine how much of the content was generated by AI, written by a human, or a combination of both. Results are probabilistic estimates—a powerful screening tool, not a definitive verdict.

AI Detection

Scores content across four dimensions: AI-generated, human-written, AI-edited human writing, and unknown. Each with a confidence percentage. Detailed signals explain what triggered the assessment.

Batch Processing

Analyze entire folders of documents in one run. Export results to CSV for review, filtering, and reporting. Built for volume—audit dozens of submissions without opening a single file manually.

Citation ValidationComing Soon

Verify that citations in legal briefs, academic papers, and published articles actually exist. Catches AI-fabricated references and human transcription errors alike. Built for the legal and publishing industries.

URL Analysis

Paste any web address and AI Detective fetches, extracts, and analyzes the page content automatically. Tracking parameters are stripped before fetching. Works with PDF files served via URL as well.

Privacy by Design

Your documents are never routed through our servers. Analysis requests go directly from your machine to the Anthropic API using your own API key. No intermediary, no storage, no logging by us.

Wide Format Support

.docx, .pdf, .pptx, .xlsx, .odt, .txt, .md, .html, .eml, .msg, .json, .csv, .xml, and more. Web pages via URL. PDF files served via URL. If it contains text, AI Detective can read it.

Process

How It Works

Paste, open, or fetch

Paste text directly, open a document from your drive, or paste a URL. AI Detective handles the extraction. No reformatting required—drop in what you have.

Analyze

Click Analyze. AI Detective sends the content to Anthropic's Claude API using your own API key. Your documents go directly to Anthropic—not through our servers.

Review results

Scores appear instantly: AI%, Human%, Edited%, Unknown%, and Confidence. Detailed signals explain what triggered the assessment so you understand the why, not just the number.

Save or export

Save a formatted analysis report as RTF, export batch results as CSV, or copy results to the clipboard. Every finding is documented and portable.

AI Detective requires an Anthropic API key for analysis. API keys are free to obtain and usage costs are typically fractions of a cent per document. Get your API key →

Download AI Detective™

Windows 10/11 · 64-bit · Free for Personal Use
⬇ Free Download 💛 Donate

Fully functional. No restrictions. No trial period.

System Requirements
  • Windows 10 or Windows 11 (64-bit)
  • .NET 10.0 Windows Desktop Runtime (included in installer)
  • Anthropic API key (free—see instructions included)
  • Internet connection for analysis
Installation note:  AI Detective is distributed as a ZIP file. Extract and run the included installer. Windows SmartScreen may flag the application on first run—this is expected for new software without a code signing certificate. The installer includes an unblock utility. See READMEFIRST.txt for full instructions.

AI Detective results are probabilistic estimates, not definitive determinations. For entertainment purposes only. Verify before use. See the License Agreement for full terms and conditions.

Licensing

Pricing

Personal Use
$0
Forever free
  • Single document and batch analysis
  • All file formats supported
  • URL analysis
  • Save reports and CSV exports
  • Your API key, your costs

💛 Donations encouraged

Free Download
Organizations & Firms
Commercial Use
Contact for pricing
Publishers, legal, enterprise
  • Everything in Personal
  • Commercial use license
  • Priority support
  • Volume pricing available
  • Citation validation (coming soon)
Contact Us

Commercial use includes any use within a for-profit organization, law firm, publishing house, media company, educational institution, or government agency where results inform professional decisions or are used in professional deliverables.

Questions

Frequently Asked Questions

No. Your documents are never sent to Levin Communications or any server we operate. When you run an analysis, the document text goes directly from your computer to Anthropic's API using your personal API key. Anthropic's privacy policy governs that transmission.
An API key is a personal access credential that lets AI Detective communicate with Anthropic's Claude AI model. You get one by creating a free account at console.anthropic.com. Usage is billed directly by Anthropic at very low rates—typically less than a penny per document analysis.
AI Detective produces probabilistic estimates, not definitive determinations. Accuracy depends on document length, content type, and writing style. Longer documents generally yield more reliable results. Results should be used as a screening tool and verified by human judgment before any consequential decision.
Word documents (.docx, .doc), PDFs, PowerPoint (.pptx), Excel (.xlsx), OpenDocument formats (.odt, .ods, .odp), plain text (.txt, .md, .log), email files (.eml, .msg), HTML, XML, JSON, CSV, and web pages via URL.
Not currently. AI Detective is a Windows desktop application requiring Windows 10 or Windows 11 (64-bit). A web-based version is under consideration for a future release.
Any use within a for-profit organization, law firm, publishing house, educational institution, government agency, or where results inform professional decisions or appear in professional deliverables. Personal use by individuals for their own non-commercial purposes is free.
Citation validation is an upcoming feature that checks whether cited sources—case law, journal articles, statutes—actually exist and match their citations. It catches both AI-fabricated citations and human transcription errors. We're targeting a release in a future version update.
AI Detective can identify strong signals of AI generation, but no tool can make that determination with certainty. The AI landscape changes rapidly, and models are constantly improving. AI Detective is a forensic screening tool—one input to a human decision, not a replacement for it.
Get in Touch

Contact

Levin Communications

General inquiries
RBLevin@RBLevin.net
Report a bug
Use Help → Report a Bug inside the application
Feature requests
Use Help → Feature Request inside the application
Commercial licensing
RBLevin@RBLevin.net
Send a Message