The Checker AI

TheChecker.AI analyzes text for signals associated with AI-generated writing and returns model and confidence information at paragraph or sentence level. It supports pasted text and PDF/document uploads, detects writing from 40+ AI models according to its official site, and includes a separate Humanizer that rewrites text using one-time word credits. The product is positioned for students, writers, educators, publishers, and institutions; detection results are indicators rather than proof of authorship and should be interpreted under the relevant academic or editorial policy. The current paid plan is $9.90/month or $99/year, with 5,000 humanizer words per month; Humanizer packs start at $5 for 15,000 words.

✨ Key Features

• AI text detection — Estimate whether text resembles AI-generated writing.
• Model identification — Identify the likely source model where supported.
• Sentence-level analysis — Highlight passages that trigger detection signals.
• Paragraph-level analysis — Review longer sections with confidence information.
• 40+ model coverage — Support detection for major model families claimed by the vendor.
• PDF/document upload — Analyze supported files.
• Humanizer — Rewrite text for a more natural presentation.
• Word credits — Buy Humanizer words separately from detection access.
• Education workflows — Support teachers, students, and institutions.
• Privacy claim — Free detector-demo text is analyzed without being saved. Account scans are saved and subscribers can reopen their history; Humanizer runs are always saved. Review the current privacy policy for retention and deletion terms.

💳 Pricing

• Free demo — Limited checks without a paid subscription.
• Monthly — $9.90/month with unlimited detection and 5,000 Humanizer words/month.
• Yearly — $99/year according to the current pricing page.
• Humanizer packs — $5/15,000 words, $15/50,000, or $35/150,000; credits do not expire.
• Institutional — Custom plans, API, bulk management, and analytics.

⚖️ Alternatives Compared

🎯 Use Cases

• Student self-review: Inspect drafts before submission.
• Teacher review: Identify passages for follow-up discussion.
• Editorial checks: Review incoming professional content.
• Publisher screening: Add an AI-writing signal to intake workflows.
• Institutional reporting: Standardize sentence-level reports.
• Content revision: Rewrite passages with Humanizer credits.
• Policy conversations: Use results as one signal, not a final verdict.
• API integration: Connect institutional checks to supported systems.