Description
AI Scanner is a free AI detector that checks whether text is AI-generated, human-written or a mix. It produces a content report with an overall AI score and a sentence-by-sentence breakdown that highlights which parts read as AI, helping writers, students and reviewers understand where their content stands.
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The tool detects output from multiple large language models — including ChatGPT, Claude, Gemini, Grok, DeepSeek and Llama — and is designed to catch AI content even when it has been edited manually or run through humanizing tools. It works by evaluating how predictable the text is, since AI writing tends to be more uniform and repetitive than human writing.
AI Scanner requires no registration and places no limit on the number of scans, though each scan is capped at 3,000 words. It states that texts are not added to external databases and are not stored after the report is returned, with data protected by 256-bit encryption during processing. The team notes it works to minimize false positives, including bias against non-native English writers.
- CategoryAI Content Detectors
- Pricing ModelFree
- DeploymentCloud
- PlatformsWeb
AI Scanner's Core Features
AI score plus sentence-by-sentence breakdown
Detects ChatGPT, Claude, Gemini, Grok, DeepSeek and Llama output
Catches manually edited and humanized AI content
Unlimited scans with no account required
3,000-word limit per scan for fast results
Texts not stored or added to external databases
256-bit encryption during processing
Ongoing tuning to reduce false positives, including for ESL writers
How to use AI Scanner?
Paste your text: Enter up to 3,000 words per scan (best for texts over 300 words).
Run the scan: AI Scanner analyzes the text's predictability.
Read the report: Review the overall AI score and the sentence-level highlights.
Revise as needed: Edit flagged passages and re-scan without creating an account.
AI Scanner's Use Cases
- Checking your own writing
- Reviewing submissions
- Content quality control
- Catching humanized text
