---
title: "Does Grammarly Detect AI Writing? What It Actually Checks (2026)"
description: "Does Grammarly have AI detection? Grammarly added an AI detection feature in 2024. Learn how it works, its accuracy, and how it compares to dedicated AI detectors."
author: "Khadin Akbar"
last_updated: "2026-03-18"
secondary_keywords: ["grammarly ai detection", "does grammarly detect chatgpt", "grammarly ai checker", "grammarly ai writing detection"]
---

# Does Grammarly Detect AI Writing?

**Yes — Grammarly added an AI detection feature in 2024** as part of its authorship detection capabilities. However, it is less accurate than dedicated AI detection tools like Turnitin, GPTZero, or Originality.ai.

## How Grammarly's AI Detection Works

Grammarly's AI detection is integrated into its existing writing analysis tool. It:

- Analyzes text for statistical patterns associated with AI generation
- Provides a percentage-based AI score
- Highlights sections that appear most likely to be AI-generated
- Works alongside grammar and style suggestions

## Accuracy Compared to Dedicated Detectors

| Tool | AI Detection Accuracy | False Positive Rate |
|---|---|---|
| Grammarly | ~75-80% | ~8-12% |
| Turnitin | ~94% | ~1-4% |
| GPTZero | ~91% | ~5-10% |
| Originality.ai | ~89% | ~3-8% |

Grammarly's detection is less accurate because AI detection is a secondary feature — their primary product is grammar and writing assistance.

## What Grammarly Does Well

- **Convenience** — AI detection built into a tool many writers already use
- **Integrated workflow** — check and fix grammar, style, and AI detection in one place
- **Free tier** — basic AI detection available without additional cost

## Limitations

- Lower accuracy than specialized detectors
- Higher [false positive](/glossary/false-positive-ai-detection) rate
- Less detailed analysis (no perplexity or burstiness breakdown)
- Not accepted as a primary detection tool by most academic institutions

## FAQ

**Q: Should I use Grammarly to check if my text passes AI detection?**
A: Grammarly's AI detection gives a rough estimate, but for reliable checking you should use a dedicated tool. [TextHumanizer.pro's free AI detector](/free-tools/ai-detector) scans against 5 major detectors simultaneously.

**Q: Does running text through Grammarly's editor make it less detectable?**
A: No. Grammarly's grammar and style suggestions don't change the underlying [perplexity](/glossary/perplexity-score) and [burstiness](/glossary/burstiness) patterns that AI detectors analyze.