Grammarly AI Detector
by Grammarly · official site
- Detects
- text
- Free tier
- Free.
- Sold to
- General writers
What it does well
- Free and fast
- Backed by a company with a real research team
- Sits inside a tool people already use
Where it fails
- Gives a coarse percentage with little explanation
- Conflict of interest: Grammarly also sells AI writing
Our own measurements
Not yet published. We would rather show nothing than repeat a number we have not reproduced — see our methodology for the benchmark design and what we will publish when it has run.