AI Detection
AI writing and online plagiarism checks.
Check AI authorship
Enter the text you want to analyze. Billing is $0.0625 per started 1,000 words. No charge until you run detection.
Words
0
Estimate
$0.0000
TXT, Markdown, CSV, PDF, or DOCX. Text is extracted locally before detection.
API call
Use this endpoint with a NanoGPT API key. The website form continues to use the browser route.
Endpoint
POST /api/v1/ai-detection
Request body
cURL
curl -sS \
-X POST \
-H "Authorization: Bearer $NANOGPT_API_KEY" \
-H "Content-Type: application/json" \
-d '{"mode":"ai","text":"Paste the text you want to check here."}' \
"https://nano-gpt.com/api/v1/ai-detection"How the results are displayed
Each check is shown as a clear summary with score breakdowns, highlighted segments, or source matches so you can understand the result at a glance.
Likely human
92%
Authorship checks include AI-written, AI-assisted, and human-written percentages with segment-level detail when available.
Source matches
Plagiarism checks list matched online sources, similarity scores, and excerpts that explain where overlap appears.
Download a polished PDF report
Every completed check includes a free PDF report you can save, share, or attach to your review workflow without rerunning the analysis.
A clean top-line result
The report opens with the verdict, confidence signals, word count, and the date the check was generated.
Evidence users can inspect
AI checks include highlighted segments. Plagiarism checks include matched sources, scores, and excerpts.
Built for follow-up
Use the PDF as a concise review artifact for documentation, editorial review, or classroom feedback.