A free AI content detector and text analysis suite that scans text for AI-generated writing with sentence-level highlighting.
ZeroGPT is worth using as a free first-pass AI detector, but it is not reliable enough to act as the sole basis for academic or hiring decisions. ZeroGPT scans text for AI writing and highlights flagged sentences for free, and paid plans from $7.99 per month remove ads and scan limits. The detector returns false positives on human writing at a measurable rate, so for final verdicts on student or paid work, pair ZeroGPT with a second detector and human judgement.
ZeroGPT is a free AI content detector and text analysis platform that scans text for AI-generated writing and flags it with sentence-level highlighting. ZeroGPT runs the detector through its proprietary DeepAnalyse technology. Rawad Baroud and a co-founding team launched ZeroGPT in 2022. ZeroGPT serves students, writers, and editors who check content for ChatGPT, GPT-4, and Gemini output.
ZeroGPT bundles several text tools into one suite. The AI detector marks AI-written sentences and returns a percentage score. The humanizer rewrites flagged text to read as human writing. The plagiarism checker scans submitted text against online sources. The utility tools add a paraphraser, grammar checker, summarizer, translator, and word counter.
ZeroGPT serves three main audiences. Students use ZeroGPT to check essays before submission. Bloggers use ZeroGPT to scan and rewrite drafts for originality. Editors use ZeroGPT to verify writer submissions. ZeroGPT offers a free tier and paid plans from $7.99 per month.
ZeroGPT is safe to use and legitimate, operated by ZeroGPT under a documented privacy policy, though the detector results carry a false positive risk. ZeroGPT processes scans over an encrypted connection. ZeroGPT, founded by Rawad Baroud, has operated the platform since 2022.
ZeroGPT states that analysed text is not stored long term after the detection report renders. The privacy policy documents how ZeroGPT handles submitted content, and ZeroGPT secures the connection between the browser and its servers with standard encryption.
Visit zerogpt.com and open the AI detector tool.
Paste text into the box or upload a file.
Click the detect button to run the scan.
Read the AI-probability percentage and the highlighted sentences.
Run the humanizer or plagiarism checker on the same text.
Create an account to save reports and raise scan limits.
Upgrade to a paid plan for ad-free reports and batch scanning.
Scores text for AI writing with sentence highlighting.
Rewrites flagged text to read as human writing.
Scans submitted text against online sources.
Rephrases sentences into alternative wording.
Corrects spelling and grammar errors.
Condenses long text into short summaries.
Scans uploaded documents and PDF files.
Counts words and characters in submitted text.
Scan essays before submission for AI-flagged sentences; pair with the grammar and plagiarism checker; treat the score as a guide, not a final verdict, given the false positive rate.
Run the detector on content before publishing; the humanizer rewrites flagged passages; the paraphrasing tool varies phrasing across pages.
Use file uploads to scan documents in batches; the plagiarism checker flags copied passages with a similarity score.
| Tool | Best for | Price | Notes | Compare |
|---|---|---|---|---|
| GPTZero | Academic AI detection | from $10/mo | Free tier available | vs → |
| Originality.ai | Publisher-grade accuracy | from $14.95/mo | No free tier | vs → |
| QuillBot | Paraphrasing and grammar | from $9.95/mo | Free tier available | vs → |
| ZeroGPT — this review | Free AI detection | from $7.99/mo | Free tier available |
GPTZero focuses on classroom detection and reports a lower false positive rate than ZeroGPT in independent tests. Originality.ai targets publishers and charges a subscription with no free tier, while ZeroGPT scans for free. ZeroGPT undercuts both on price, starting from $7.99 per month against $10 for GPTZero and $14.95 for Originality.ai. Accuracy tests rank Originality.ai above ZeroGPT for false positive control.
ZeroGPT offers a free tier that runs the AI detector with no account and no payment. The free version caps each scan at 15,000 characters and displays ads. Removing ads, raising limits, and full plagiarism checks require a paid ZeroGPT plan.
ZeroGPT Pro costs from $7.99 per month on annual billing. The Pro plan removes ads, raises scan limits, and adds PDF reports and batch scanning. ZeroGPT Plus and Max tiers raise the monthly quotas further for heavy users.
ZeroGPT advertises accuracy near 98 percent, but independent 2026 tests measure real-world accuracy between 70 and 85 percent. ZeroGPT returns false positives on human writing at a rate between 15 and 26 percent. Treat ZeroGPT as a first-pass check, not a final verdict.
ZeroGPT includes a built-in humanizer that rewrites AI-flagged text into human-style writing. The humanizer restructures sentences to lower the detection score. Final readability depends on the selected ZeroGPT rewrite settings.
ZeroGPT states that submitted text is not stored long term after the detection report renders. The ZeroGPT privacy policy documents how analysed text is handled. ZeroGPT secures the connection with standard encryption during each scan.
ZeroGPT is safe to use, operated by ZeroGPT over an encrypted connection. The platform processes scans without long-term text storage. The main risk with ZeroGPT is detection false positives, not data security.
Start free, or take the trial to explore premium features across all your devices.
Visit ZeroGPT →
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