AI Generator Checker: The Best Tools in 2025 and Why unGPT Is the Top Pick
As artificial intelligence becomes more embedded in content creation, academic writing, and digital marketing, the need for an accurate AI generator checker is at an all-time high. Whether you’re a student, educator, or content creator, using a reliable tool to detect AI-generated text and images is essential.
In this guide, we’ll explore the top AI detectors online, including Grammarly, AI image detectors, and more. We’ll also explain why unGPT is the best choice for anyone who wants a smart, affordable, and powerful AI content checker.
AI Detector Online
An AI detector online should provide quick and reliable results—no downloads or complicated sign-ups. Tools like GPTZero, ZeroGPT, and Winston AI have gained attention for their AI detection claims. However, many of these tools have:
- Limited free versions
- Inaccurate detection for GPT-4 or Claude-generated content
- No humanization or rewriting features
This is where unGPT stands out—it goes beyond detection to humanize and rewrite content to make it fully undetectable by other tools.
Grammarly AI Detector
Grammarly, primarily known for grammar and style correction, now offers a basic AI detection feature. While convenient, its AI detection capabilities are still in early stages:
- 🟢 Great for grammar and clarity
- 🔴 Not built specifically to detect or humanize AI text
- 🔴 May struggle with newer AI models like GPT-4
If you’re already using Grammarly, this feature is a bonus—but for serious AI detection, Grammarly isn’t enough.
AI Image Detector
With AI tools like Midjourney, DALL·E, and Stable Diffusion generating realistic visuals, AI image detectors are now vital. Tools like Hive, AIOrNot, and Illuminarty detect image-based AI content. However, these are only useful if you’re working with AI-generated visuals.
For checking AI-generated text, especially content from ChatGPT, Claude, or Gemini, you’ll need a dedicated AI text detector like unGPT.
AI Detector Free
Many users search for a free AI detector—but “free” often comes with limitations: usage caps, watermarks, or lack of advanced detection. Some tools will flag text as AI without any actionable feedback.
Here’s what a free AI detector should include:
- Accurate results
- Humanization or rewrite options
- Data privacy
unGPT checks all the boxes—and offers a generous free trial to test up to 1,000 words without restrictions.
The Best Alternative: unGPT
If you’re tired of wasting time comparing tools that overpromise and underdeliver, look no further than unGPT. It not only detects AI-generated text, but also rewrites and humanizes content to pass all popular detection platforms—including Turnitin, GPTZero, and Originality.ai.
Why unGPT leads the market:
✅ AI detection + rewriting in one
✅ Bypasses detection tools
✅ Secure—doesn’t store your content
✅ Affordable with a free trial
✅ Trusted by professionals and students alike
AI Detection Tool Price Comparison (2025)
| Tool | Price/Month | AI Detection | Humanizing | Free Trial | Refund Policy |
|---|---|---|---|---|---|
| Undetectable.ai | $19.00 | ✅ Yes | ✅ Yes | ❌ Limited | ❌ No |
| StealthWriter.ai | $10.00+ | ✅ Yes | ✅ Yes | ❌ No | ❌ No |
| StealthGPT | $14.99 | ✅ Yes | ✅ Yes | ❌ No | ❌ No |
| BypassGPT | $12.00 | ✅ Yes | ✅ Yes | ✅ Limited | ❌ No clear policy |
| HIX Bypass | $14.99 | ✅ Yes | ✅ Yes | ✅ Sample | ✅ 7-day refund |
| BypassAI.ai | $6.99 | ✅ Yes | ✅ Yes | ❌ No | ❌ None |
| HideMyAI | $25.00 | ✅ Yes | ✅ Yes | ❌ No | ❌ Not stated |
| AIUndetect | $15.00 | ✅ Yes | ✅ Yes | ❌ No | ❌ No public policy |
| QuillBot | $19.95 | ❌ Weak | ✅ Rewriter | ✅ Free | ✅ Refunds for annual |
| Wordtune | $6.99 | ❌ No | ✅ Rewrite | ✅ Yes | ✅ Yes |
| Grammarly | $12.00 | ✅ Limited | ✅ Grammar | ✅ Yes | ✅ Refund available |
| Writesonic Humanizer | Varies | ✅ Yes | ✅ Yes | ✅ Yes | ❌ No clear terms |
| RewriterPro.ai | Free | ❌ No | ✅ Poor | ✅ Yes | ❌ Not applicable |
| ✅ unGPT (Top Pick) | $7.49 | ✅ Advanced | ✅ Best-in-class | ✅ 1000 words free | ✅ Full refund guarantee |
Final Thoughts: The Best AI Generator Checker in 2025
The demand for accurate and affordable AI generator checkers is exploding. Tools like Grammarly, GPTZero, and image-based detectors serve their purpose—but when it comes to text detection, rewriting, and undetectability, unGPT is clearly the best choice.
✔️ Free trial
✔️ Human-like rewriting
✔️ Accurate detection
✔️ Affordable pricing
Don’t waste your time or money jumping from one tool to the next. Try unGPT—the only AI generator checker you’ll ever need.
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