AI Content Checker

A free online tool that assesses whether text was generated by AI, helping educators, editors, and content teams verify originality and maintain content integrity.

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About This Tool

The AI Content Checker analyzes text to estimate AI authorship likelihood. It combines signals from multiple detectors, language-aware features, and stylometric cues to produce a probabilistic score and a verdict suitable for review by educators, editors, policy teams, and content managers. The tool accepts pasted text or uploaded documents and works with various languages. It returns an overall AI-likelihood score, per-passage flags, and a compact report. Results are intended as signals to guide human judgment, not as definitive proof, and are appropriate for both rapid screening and formal review workflows.
How it works conceptually: input normalization, tokenization, and language detection precede model evaluation. Each detector evaluates features such as perplexity, token distribution, and stylistic patterns. These scores feed a calibrated ensemble model that outputs a probability between 0 and 100% and a confidence interval. Flagged passages include position ranges and brief notes explaining why they contributed to the score. Users can adjust thresholds to suit risk tolerance or policy requirements.
Unique value lies in speed, privacy, and flexibility: no mandatory accounts, optional export, batch capabilities, and language-aware scores. Use it for classroom integrity checks, editorial workflows, or compliance reviews, with clear caveats about probabilistic results. In practice, the tool supports quick screening and deeper analysis, enabling human reviewers to make informed decisions about attribution, edits, or further verification.

How to Use

  1. Provide inputs: paste or upload the text to analyze.
  2. Run analysis: the tool computes AI-likelihood using an ensemble of detectors and language-aware scoring.
  3. Review outputs: examine the overall score, confidence, and any flagged passages with notes.
  4. Decide action: determine attribution, revise content, or perform additional checks.
  5. Optional: export the results as JSON or CSV for records.
How to use ai checker free online

Frequently Asked Questions

Find Quick Answers

How reliable is AI detection?
Detection is probabilistic; accuracy depends on text length, language, and model diversity. Use results as signals, not definitive proof; consider corroborating evidence and human review.
Does it store my text?
By default, analyses are not retained on the server; inputs are processed temporarily. Users can opt in to save results or export reports when needed.
Which languages are supported?
Supports multiple languages with varying detector performance. Language detection or selection should be used, and scores interpreted with language-specific considerations.

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