What is OmniDetect?

OmniDetect is a free AI content detector and checker that analyzes text to determine if it was written by AI. It uses a multi-engine consensus approach, sending your text to one of several detection engines based on its own benchmarks, and aggregates results into an OmniScore (0-100) with flagged passages and reasoning. It also includes an AI Writing Coach to help improve writing.

How to use OmniDetect?

To use OmniDetect, paste up to 50,000 characters of text into the provided box, or upload a file (.pdf, .docx, .txt) or scan a URL. You can optionally specify writer type and text type for more accurate analysis. The tool analyzes your text in under 5 seconds and returns an OmniScore with verdict and sentence-level highlights. Free users get 3 scans per day for the first ~300 characters; creating a free account allows full document scans.

Core features of OmniDetect

Multi-engine consensus detection (3 independent engines)
Published accuracy metrics (false-positive rate, per-language and per-register)
OmniScore (0-100) with verdict and sentence-level highlights
AI Writing Coach with edit & rescan loop
Privacy-first: delete your text anytime, no selling of data
Free tier with 3 scans/day, no credit card required
Supports multiple languages (English, Chinese, German, Dutch, French, Spanish, Portuguese, Japanese, Korean)