Free AI & Plagiarism Detection Tools
We build free, no-signup tools for AI content detection and plagiarism checking — plus independent guides on how these technologies actually work. Not affiliated with Quetext Inc.
We build tools, then explain how they work
We built a free AI detector and a free plagiarism checker — both available directly on this site, no signup required. The tools are designed to give you a fast, honest signal on your text without pushing you toward a paid subscription.
Alongside the tools, we publish independent guides on how AI detection and plagiarism checking actually work — covering accuracy benchmarks, false positive rates, limitations, and what the scores really mean in practice.
A small team of SEO specialists and content researchers with backgrounds in EdTech and academic integrity tooling. We started this site to give students, teachers, and writers a no-nonsense detection resource they can actually trust.
What makes us different
- Require account creation before any scan
- Strict word limits that cut off mid-document
- Results hidden behind upgrade prompts
- Scores with no explanation of what they mean
- No information on false positive risk
- Push paid plans after every single check
- No signup, no email, no account — ever
- 500-word free scan with full results shown
- Sentence-level breakdown, not just a number
- Clear explanation of what each score means
- Honest about limitations and false positive rates
- Guides that explain the technology, not just the UI
Not affiliated with Quetext Inc.
quetextai.com is an independent review website. We are not affiliated with, endorsed by, or officially connected to Quetext Inc. in any way. The Quetext name and related trademarks are the property of their respective owners. Our use of the Quetext name is for descriptive and editorial purposes only — to help users find and evaluate this product alongside alternatives. All opinions expressed on this site are our own, based on independent research and testing.
How we build and maintain our tools
Both tools work without creating an account, entering an email, or agreeing to a trial. We believe a free tool should be free to use from the first visit — not after a registration wall that harvests your data.
Every tool page on this site includes documented accuracy figures, false positive rates, and known failure cases. We do not hide the fact that no AI detector is 100% accurate, or that plagiarism checkers can miss paraphrased content.
We show sentence-level breakdowns, score-zone tables, and plain-English explanations of what each result actually indicates — not just a percentage with no context. A number without interpretation is not a result.
The AI detection landscape changes fast. Our accuracy benchmarks and comparison data are reviewed on a rolling schedule and updated when meaningful changes occur — every page shows when it was last verified.
This site earns revenue through affiliate links when users click through to partner tools. These relationships do not influence how we describe tool accuracy, limitations, or alternatives. We disclose this openly rather than burying it in a footer.
If you find an error in a score, a data point, or a factual claim on this site, we want to know. Verified corrections are applied promptly. Getting it right matters more than appearing authoritative.
Two free tools, tested the same way
We built both tools on this site using the same testing standards described above — the same standardised samples, the same repeated-run methodology, and the same transparent update schedule.
See how AI detection really works — test it yourself.
Run a check on your text and get a full breakdown of AI vs. human content signals.
Try the Tool