Top 5 Free AI Detectors

You just hired a freelancer, or maybe you're checking a guest post. You want to know if it's AI, but you don't want to sign up for a monthly subscription. You need a **free AI detector**.

Here are the best options available right now:

1. HumanizeAI Detector
We offer a robust **AI checker free** of charge for initial checks. It gives you a clear percentage score and highlights problematic sentences.
* **Pros:** Fast, no signup required for basic checks.
* **Best For:** Quick verification of blog posts and emails.

2. ZeroGPT
One of the most famous names. It is simple and widely used.
* **Pros:** Very easy interface.
* **Cons:** Can be ad-heavy.

3. Writer.com AI Content Detector
A great enterprise tool that offers a free widget.
* **Pros:** Very clean interface.
* **Cons:** Strict word limits on the free version.

4. CopyLeaks (Trial)
While mostly paid, they offer a **free AI checker** trial that is incredibly accurate.

5. GPTZero Free
The "classic" detector. It breaks down text by "perplexity" scores.

What to Look for in a Free Tool
When searching for **unlimited AI checker** options, be wary of accuracy. Some free tools just guess. Always cross-reference with a second tool if the results are critical.