Last updated 08-10-2026
Category:
Reviews:
Join thousands of AI enthusiasts in the World of AI!
AiDetector (formerly AI Checker Tool)
AiDetector is an education-focused AI text detector that scores pasted writing, uploaded documents, and URLs for machine-generated content. It targets ChatGPT, GPT-5.4, Claude, Gemini, and other popular models, then returns an overall AI probability plus sentence-level highlights. Teachers, students, and writers use it to check drafts before submission or publication.
Most AI detectors stand alone and still produce false positives on real human writing. AiDetector aggregates signals from four independent engines and shows where they agree or split, a consensus model Arizona State University researchers validated for cutting single-detector false positives. You still see per-engine scores, so disagreement becomes part of the read rather than a hidden guess.
The product fits classrooms that need audit trails, freelancers proving originality, and marketing teams screening outsourced copy. Paid tiers add credit-based access to Originality.ai, Winston AI, and GPTZero alongside plagiarism, spell, and fact checks, while the built-in detector stays available without a subscription.
Runs four independent detectors (built-in plus Originality.ai, ZeroGPT, and Winston AI) and surfaces per-engine agreement before you act on a flag
Free built-in scans accept up to 5,000 words per paste with no credit card required on the homepage
Sentence-level heatmaps color-code each line and return confidence scores, with scans averaging about 3 seconds
Paid plans start at $9 per month for 500 credits; third-party detectors cost 2 credits per 100 words
Supports text paste, document uploads, and URL analysis from one dashboard with exportable PDF reports
Aggregates four detectors and shows agreement splits, which the site ties to near-zero false positives in peer-reviewed research.
Free homepage scans cover up to 5,000 words with sentence-level heatmaps and no payment details required.
Handles pasted text, uploaded documents, and URLs, then exports PDF reports for compliance or classroom records.
Third-party engines and plagiarism checks consume monthly credits at 1 to 2 credits per 100 words.
API access is limited to the $99 per month Organization tier.
The stored aicheckertool.com URL redirects to aidetector.com, which can confuse users expecting the old domain.
How accurate is AiDetector?
AiDetector reports a 99.1% accuracy rate on its homepage and cites peer-reviewed work showing four-detector consensus can drive false positives toward zero. The built-in model also lists 93.9% true AI detection with a 1.5% false flag rate when used alone. AiDetector shows per-detector splits so you can weigh agreement before acting.
What AI models can AiDetector detect?
AiDetector is built to flag text from ChatGPT, GPT-5.4, Claude, Gemini, and other widely used generators named on its homepage. Paid scans can add Originality.ai, Winston AI, and GPTZero on top of the built-in engine. AiDetector returns an overall score plus sentence-level highlights for each run.
Is AiDetector free to use?
AiDetector includes a built-in AI detector you can run from the homepage without entering payment details. That free scan handles up to 5,000 words per submission. AiDetector sells monthly credit bundles when you want third-party engines, plagiarism checks, or bulk scanning beyond the included detector.
How does AiDetector sentence analysis work?
AiDetector breaks your text into sentences, scores each one, and color-codes the heatmap as likely AI, mixed, or likely human. The UI shows an overall percentage plus per-sentence confidence, and example scans on the site complete in about 2.4 seconds. AiDetector lets you download a PDF report for records.
What does AiDetector cost?
AiDetector lists Starter at $9 per month for 500 credits, Pro at $29 for 2,000 credits, and Organization at $99 for 7,500 credits with API access. Credits spend at 2 per 100 words for Originality.ai, Winston AI, or GPTZero, and 1 per 100 words for plagiarism, spell, or fact checks. AiDetector keeps its built-in detector free on every tier.
Can teachers use AiDetector for academic integrity?
AiDetector markets classroom workflows with bulk document scanning, class management, and student history tracking for educators. The site cites 50,000+ educators and positions consensus scoring to reduce wrongful AI accusations. AiDetector is meant as one signal in an integrity review, not a sole disciplinary verdict.
Does AiDetector offer an API?
AiDetector includes API access on the Organization plan at $99 per month with 7,500 credits. Lower tiers focus on the web dashboard for text, document, and URL scans. AiDetector lists dedicated support on Organization for teams wiring detection into their own pipelines.