Undetectable AI
Free AI detector and humanizer — check if text is AI-generated and rewrite it to pass detection.
| What is it | Free AI detector and humanizer — check if text is AI-generated and rewrite it to pass detection. |
|---|---|
| Pricing | Paid — from $19/mo |
| Free tier | Yes |
| Platform | Web Application |
| Works with | Zapier |
| Best for | Checking essays or assignments for AI-generated content, Rewriting AI-assisted blog posts to avoid detection |
| Domain registered | 2023 |
Data updated Aug. 1, 2026
What does Undetectable AI do?
Undetectable AI is a web-based tool that serves two main purposes: detecting AI-generated text and rewriting it to appear human-written. You paste your text into its interface, and it instantly analyzes the content against several popular AI detection models, showing you the likelihood it will be flagged. If the text is detected as AI, the tool's 'Humanize' function can rewrite it, aiming to reduce those detection scores. This makes it a practical utility for anyone who uses AI writing assistants but needs to ensure the output feels original.
The tool stands out by consolidating results from multiple detectors—like Originality.ai and GPTZero—into a single report, saving you from checking each one individually. It claims high accuracy in identifying content from models like GPT-4, Claude, and Gemini, even when it has been paraphrased. Beyond the website, Undetectable AI offers a Chrome extension, letting you check and humanize text directly within other web applications like Google Docs or email clients.
This tool is particularly useful for students, educators, and content creators who operate in environments where AI-generated content is scrutinized. A student might use it to verify an essay won't trigger academic integrity software, while a marketer could use it to refine AI-drafted blog posts before publishing. It addresses the specific need to use AI productivity tools while maintaining the appearance of human authorship.
Key features
What makes it stand outWho is Undetectable AI for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardYearly
- 10,000 words per month
- Passes AI detectors
- High quality, legible content
- Watermark and future proof
- Unlimited Human Auto Typer
- Unlimited AI Detecting
- Access to Smart Job Applier
- AI Question Solver
- Writing level matching
- API compatible
Monthly
- 20,000 words per month
- Passes AI detectors
- High quality, legible content
- Watermark and future proof
- Unlimited Human Auto Typer
- Unlimited AI Detecting
- Access to Smart Job Applier
- AI Question Solver
- Writing level matching
- API compatible
Trust & presence
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