Our core detection engine is trained on a large corpus of human and AI-generated text. It achieved 90.6% accuracy on the RAID benchmark, which is a comprehensive evaluation that tests detectors across multiple AI generators, domains, and adversarial attacks.
From raw text to a detailed verdict in four steps.
Input text is tokenized and segmented into sentences. Language is automatically detected for multilingual support.
Each sentence is passed through our internal detection engine, which analyzes writing patterns to distinguish AI-generated text from human writing.
Per-sentence scores are weighted and combined into a final suspicion score (0.0–1.0) and a document-level verdict: likely AI, possibly AI, uncertain, or likely human.
Per-sentence scores are returned alongside the document-level verdict, letting you see exactly which parts of the text triggered detection.
At the core of our detection engine is a fine-tuned classifier — a state-of-the-art language model trained specifically to distinguish AI-generated text from human writing:
This approach gives our detector the ability to identify AI-generated text reliably while maintaining low false positive rates for human writers.
The values that guide how we build and improve our detection technology.
We prioritize minimizing false positives. Mislabeling human-written text as AI-generated can have serious consequences, so precision comes before recall in our detection pipeline.
Submitted texts are not stored permanently or used for training. We process content for analysis and return results — your writing stays yours.
AI detection is probabilistic, not absolute. We communicate confidence levels clearly so you can make informed decisions about the content you review.
We regularly benchmark our models against established datasets and real-world adversarial examples. As AI writing evolves, our detection keeps pace.
RAID (Robust AI Detection) is an established benchmark for evaluating AI text detectors. It tests across:
Scoring 90.6% on RAID means our detector reliably identifies AI-generated text even under challenging, real-world conditions.
Paste any text and get an instant AI detection analysis powered by our fine-tuned classifier. Completely free.
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