CopyLeaks is one of the better free tools in terms of accuracy, at 66% (though this is much lower than the 99% claimed on the site). Additionally, it was the best tool for detecting AI content that was combined with human text or run through a paraphrasing tool (it caught 60% of these texts). quillbot ai Making it the most accurate and reliable proofreading tool for students.
Built for Every Kind of Writer
- Both tools provide accurate AI content detection, but Dechecker offers better value for users who prioritize free access and integrated workflows.
- Double-check your text with a more reliable AI detector and avoid false positives.
- Mixed-authorship content – how most real AI-assisted writing actually looks – evades detection roughly one in four times.
UnAIMyText’s detector is structurally different from QuillBot’s, and from most detectors on the market. It profits from writers humanizing their text, and it profits from other writers checking whether humanization worked. There is also the small matter of QuillBot selling both the paraphrasing tool and the detector.
The difference is that students are not just getting a percentage. That is where Skyline Academic can be a strong alternative for students. Do not assume that passing one detector means every other detector will give the same result.
✔️ User Experience
If you’re checking non-English content or writing in a second language, treat the score with extra skepticism. Grammarly helps authors spot grammar, spelling, and punctuation mistakes, improve clarity and tone, and check for plagiarism—all in one streamlined toolkit. QuillBot is one of the most popular AI writing tools, trusted by millions of students, writers, and self-publishing authors.
Its ability to detect paraphrased or mixed AI texts was the worst of all the tools we tested. When the tool was working, its results were still some of the least accurate we saw, at 38%. Because of these binary judgements, it got the relatively low accuracy score of 52%. Because of this, there’s very little distinguishing these two tools.
Quetext’s report flagged the blog as 99.89% which is highly accurate and provided a detailed breakdown of each AI match with percentage for each sentence There’s no signup required for basic checks, and the results come back quickly. Is QuillBot AI Checker accurate enough to trust with important work?
Grammarly shows you which phrases might get flagged as AI-generated and suggests natural in-line rewrites you can apply instantly, so you can submit your work with confidence without breaking your flow. If you used AI to brainstorm, see where it may have influenced your draft so you can revise and stay within academic guidelines. Quickly spot unnatural-sounding writing and fine-tune it to match your authentic voice before sharing with your clients or team. Provides clear explanations for why a phrase may be flagged as AI-generated and offers one-click rewrites with AI Rewriter. Updates continuously to provide the latest advancements in AI detection. When you use Grammarly, you get more than surface-level AI detection.
It does not currently support detection for images, videos, or other non-text formats. If a writer tries to sneak in a ChatGPT-generated paragraph, Humbot catches it immediately. We have a zero-tolerance policy for lazy AI content. It’s a crucial tool for fair grading. As an educator, I hate accusing students of misconduct based on a single glitchy algorithm. Share your writing with more confidence.
This is no longer possible with Originality.ai’s AI Detector, which correctly identifies paraphrased content as AI-generated. While QuillBot is a useful tool for paraphrasing content, it is essential to remember that the ideas and information in the rephrased text still belong to the original author. Learn how AI scores are interpreted and why sentence-level review matters.
But then again, why use a content detector at all? As shown, writing from non-native speakers often gets rated as generated by an AI. To evaluate AI detectors, I reran my five-test series across 11 detectors. If you want to test a content detector yourself using the same text blocks, you can pull them from this document.
Click scan, and your content gets compared against billions of web pages and documents at once. The tool accepts long documents as easily as a single paragraph. Check any document for duplicate content in three simple steps. Please ensure to also check your Promotions/Spam folders. Verified to pass AI detection while preserving original meaning.