Our Verdict
AIDetector.cx estimates whether text was written by AI, a human, or a mix of both, and shows its signals sentence by sentence and paragraph by paragraph. It targets text from ChatGPT, Claude and Gemini by looking at writing patterns, and it runs two modes you're meant to read together: Balanced, tuned to reduce false positives, and High-Sensitivity, which catches more but flags more human writing by mistake. The paid plans add a lot around detection: image, video and deepfake analysis, a plagiarism checker, citation and hallucination checking, and a Verified Authorship feature. It is also unusually open about its limits: English, French, German and Portuguese are listed as validated, a dozen other languages (including Vietnamese) are beta, and the site itself says a score shouldn't be the only evidence in an academic or job decision. We agree, and that's the real caveat for every AI detector. Other trade-offs: the free tier is just 5 checks that never reset, paid prices are only shown as annual billing, and it also sells a Humanizer, which sits awkwardly next to a detector. This verdict is built from AIDetector.cx's own published pages — RankerToolAI has not run its own accuracy test.
How AIDetector.cx Scores
| Criterion | Score | Rating |
|---|---|---|
| Detection Detail Sentence and paragraph signals, 2 modes |
8.0/10 | |
| Coverage Text, image, video and deepfake checks |
8.0/10 | |
| Language Support 4 validated languages, 12 in beta |
7.0/10 | |
| Value for Money Pro $10/mo for 300 credits (annual) |
7.5/10 | |
| Transparency Honest about limits, annual-only prices shown |
7.0/10 |
✓ Pros
- Sentence-level and paragraph-level signals, not just a single percentage
- Two detection modes (Balanced and High-Sensitivity) so you can see how firm a result is
- Paid plans also check images, video and deepfakes, plagiarism, citations and hallucinations
- Clearly labels which languages are validated and which are still beta
- Up to 2,000 words per check on the free tier and 25,000 per scan on Pro Plus
- REST API, WordPress plugin and Chrome extension for teams
✗ Cons
- The free tier is 5 checks in total, with no daily or monthly reset
- Paid prices are only shown as annual billing ($120/yr for Pro)
- Only English, French, German and Portuguese are validated; Vietnamese and others are beta
- No published refund policy on the pricing page
- Like every AI detector, it can be wrong, so a score alone isn't proof
AIDetector.cx
5 free checks · Pro $10/mo (annual) · Pro Plus $24.17/mo · Business $65.83/mo
What AIDetector.cx Offers
AI Text Detection
Scores text as AI, human or mixed, with sentence-level and paragraph-level signals and the detected language.
Balanced & High-Sensitivity Modes
Two independent modes: Balanced to reduce false positives, High-Sensitivity for stricter checks.
Image, Video & Deepfake Analysis
Standard image and short-video checks on the free tier, advanced deepfake analysis on Pro, forensic video on Pro Plus.
Plagiarism, Citation & Hallucination Checks
Plagiarism deep search, citation verification and hallucination checking on paid plans.
Verified Authorship
A Writing Monitor and authorship certificates to help writers show their work is their own.
API & Integrations
REST API and webhooks, a WordPress plugin and a Chrome extension (team licensing on Business).
AIDetector.cx Pricing (2026)
| Plan | Price | Details |
|---|---|---|
| Free | $0 | 5 checks in total (1 as a guest, 4 after signing up) · no reset |
| Pro ⭐ | $10/mo | Billed $120/yr · 300 credits/mo · high-sensitivity detection · deepfake & plagiarism checks |
| Pro Plus | $24.17/mo | Billed $290/yr · 1,000 credits/mo · batch processing · 25,000 words per scan |
| Business | $65.83/mo | Billed $790/yr · 3,000 shared credits · up to 5 seats · API & webhooks |
Prices are per-month equivalents of annual billing. Credit top-ups start at 500 credits for $15 and don't expire. Enterprise is custom. Check AIDetector.cx's current pricing before you subscribe.
Try AIDetector.cx
5 free checks · Pro $10/mo (annual) · Pro Plus $24.17/mo · Business $65.83/mo
Try AIDetector.cx →Affiliate link — we earn a commission if you upgrade, at no extra cost to you.
Best AIDetector.cx Alternatives
AIDetector.cx isn't the only option in this space. Here's how the leading alternatives compare:
- GPTZero — One of the best-known AI detectors, widely used by teachers, with a free tier and classroom features.
- Originality.ai — Aimed at publishers and SEO teams, combining AI detection with plagiarism and fact checking on pay-as-you-go credits.
- Copyleaks — An AI and plagiarism detector with LMS integrations, often used by schools and universities.
Frequently Asked Questions
Is AIDetector.cx free?
Partly. You get 5 free checks in total (1 without signing up, 4 more after you register), and they don't reset. After that, Pro starts at $10/mo billed annually.
Can AIDetector.cx detect ChatGPT, Claude and Gemini?
That's what it's built for. It analyses writing patterns rather than matching known outputs. Like any detector, it gives a probability, not proof.
Is AIDetector.cx accurate?
RankerToolAI hasn't run its own accuracy test. AIDetector.cx says its Balanced mode is calibrated to reduce false positives, and it says results shouldn't be the only evidence in academic or job decisions.
Does AIDetector.cx work in Vietnamese or Spanish?
Yes, but in beta. Only English, French, German and Portuguese are listed as validated.
Does AIDetector.cx check images and videos?
Yes. The free tier includes standard image checks and videos up to 30 seconds. Paid plans add advanced deepfake analysis, and Pro Plus adds forensic video analysis.