AIGPTZero
An AI text detector for teachers and editors that returns sentence-level evidence alongside an overall AI probability score.
Are you the maker? Claim this listing to keep info, pricing and screenshots current. Verified via your tool's domain email.
AIGPTZero suits teachers and editorial reviewers who need more than a single percentage score: the sentence-level evidence makes it easier to discuss flagged passages with students or writers. Its accuracy ceiling is unverified against independent benchmarks, and the free tier's character cap means anything longer than a short essay requires a paid plan. If you need a tool with a published false-positive rate and no subscription commitment, AITurnitin is the stronger choice for high-stakes academic use.
What is AIGPTZero?
AIGPTZero is a web-based AI content detector that analyzes text for signs of generation by large language models including ChatGPT, Claude, and Gemini. It returns an overall AI probability score alongside a human score, and highlights the specific sentences that most influenced the result, giving reviewers passage-level evidence rather than a single aggregate number.
The tool is aimed at teachers, academic editors, and publishers who need to assess submitted or commissioned writing before it goes live or is graded. It supports multilingual detection and allows scans of up to 50,000 characters per run on paid plans. Basic scanning is available without a subscription; paid plans add PDF report exports, an ad-free interface, and higher annual word allowances. AIGPTZero is powered by ZeroGPT and is not affiliated with the separately branded GPTZero service.
How we scored AIGPTZero
Capability lands at 15 because sentence-level highlighting is a genuine differentiator for classroom use, but no API access exists at any tier and no independent accuracy benchmark is published, leaving the tool behind named competitors like AITurnitin that cite a ~1% false-positive rate. Ease of use scores 17 because the web interface is straightforward and the 50,000-character-per-scan limit removes a common friction point, though the ambiguous free tier hurts onboarding clarity. Value scores 13 because the three paid tiers share identical features and differ only in annual word volume, meaning most individual users overpay for capacity they will not reach; the Pro plan at $14.99/month is reasonable, but the absence of a clearly defined free tier and the 'new customer offer' pricing uncertainty undercut confidence. Delivery scores 13 because the tool is powered by a third-party engine (ZeroGPT) with no published accuracy data specific to AIGPTZero, the new-customer pricing labels raise renewal transparency concerns, and social proof is thin.
Pros and cons
What we liked
- Sentence-level highlighting shows exactly which passages drove the AI score, making it actionable for educators rather than just a pass/fail number.
- All paid plans include multilingual detection and up to 50,000 characters per scan, covering most full-length academic documents in a single run.
- Downloadable PDF detection reports are included on every paid tier, useful for keeping an audit trail in editorial or academic integrity workflows.
Where it falls short
- No independently published accuracy benchmark is cited on the site, so buyers cannot compare its false-positive rate against tools like AITurnitin that publish theirs.
- The pricing page lists no API access at any tier, which rules out the tool entirely for developers or teams wanting to integrate detection into their own workflows.
- Word-volume is the only meaningful difference between the three paid tiers: Pro (3.6M words/year), Business (6M), and Ultra (18M) share identical features, so most individual users are paying for capacity they will never use on the higher plans.
Key features
AIGPTZero pricing
No permanent free tier confirmed on the pricing page; a 'Free AI writing check' link appears in the footer, suggesting basic scanning exists but is not a named plan with stated limits. Paid plans start at $14.99/month (Pro, billed annually at $179.88/year) and rise to $49.99/month (Ultra, billed annually at $599.88/year). Monthly billing is also available at higher rates.
| Plan | Price | Who it is for |
|---|---|---|
| Free | Free | Basic AI writing check available via footer link; no stated word limit or feature set published as a named plan on the pricing page. |
| Pro | $14.99/mo | 3,600,000 words per year, unlimited detections, ad-free, PDF reports, advanced AI scanning, up to 50,000 characters per detection, multilingual detection. Billed annually at $179.88/year (new customer offer). |
| Business | $24.99/mo | 6,000,000 words per year, unlimited detections, ad-free, PDF reports, advanced AI scanning, up to 50,000 characters per detection, multilingual detection. Billed annually at $299.88/year (new customer offer). |
| Ultra | $49.99/mo | 18,000,000 words per year, unlimited detections, ad-free, PDF reports, advanced AI scanning, up to 50,000 characters per detection, multilingual detection. Billed annually at $599.88/year (new customer offer). |
Pricing reflects what we saw at time of review (2026-11). Always confirm current pricing on the tool's own site.
Who should use AIGPTZero?
A high school or university instructor grading weekly essay submissions is the clearest fit. The sentence highlighting gives you a starting point for a conversation with a student rather than just a verdict to act on. Publishers and content editors who screen freelance copy before it goes live will also find the per-document PDF export useful for keeping records.
Anyone who needs a verified false-positive rate before making a consequential decision should look elsewhere. AITurnitin publishes an approximately 1% false-positive rate and operates on a pay-as-you-go basis with no subscription required, which is a better fit for occasional high-stakes checks. Developers or teams needing API access will not find it here at any tier listed on the pricing page.
Skip it if: High-volume API users or teams needing verified benchmark accuracy
Frequently asked questions
Is there a free plan, and what does it include?+
The pricing page does not list a free plan with stated limits or features. A 'Free AI writing check' link appears in the site footer, suggesting basic scanning is available without payment, but the scope is not published. Assume it is a limited trial rather than a full free tier.
What is the maximum text length per scan?+
All paid plans allow up to 50,000 characters per AI detection run, which covers most full-length essays and articles in a single submission.
Does AIGPTZero have an API?+
No API access is listed on the pricing page at any tier. Developers needing programmatic detection will need to look at a different tool.
Is AIGPTZero the same as GPTZero?+
No. AIGPTZero is an independent tool powered by ZeroGPT and is not affiliated with GPTZero (gptzero.me), which is a separate product with its own pricing and feature set.
How much does the annual plan cost, and is there a discount?+
The Pro plan bills at $179.88/year (advertised as a 25% saving on the $239.88 full annual price). Business is $299.88/year and Ultra is $599.88/year. These are listed as new customer offers, so renewal pricing may differ.
Which AI models does it detect?+
AIGPTZero checks text from ChatGPT, the GPT API, Claude, and Gemini, covering the most common AI writing tools in academic and professional use.
More AI Writing & Content tools
See all categoriesGet your tool listed on 300+ directories.
One listing here is a strong start. But the founders who get discovered everywhere are listed everywhere. Our sister site, Free AI Directories, submits your tool to 300+ AI directories for you, every single one by hand, by a real person.
It is a one-time payment of $49, no subscription, and you can follow along as the submissions land. Prefer the slow route? The same site keeps a free list of 450+ directories you can work through yourself.
Get my tool listed on 300+ directoriesOne-time payment, no subscription · 100% human submissions · Free list of 450+ directories included.