AI Detectors.io analyzes text associated with major language models and reports an overall AI probability, confidence scores, and sentence-level results. It also offers a humanizer, citation verification, plagiarism checking, grammar tools, and watermark removal. Users can access the service through its website, Chrome extension, Microsoft Word add-in, or REST API. The company says the detector examines perplexity, burstiness, n-gram patterns, and stylometric fingerprints. Its reported 95.2% accuracy and 3.1% false-positive rate come from an April 2026 benchmark of 500 texts. The detector is trained and benchmarked on English; it returns scores for other languages, but those languages are outside the stated benchmark. The free plan allows 10,000 words per month and 500 words per use. Premium is listed at $8.33/mo billed annually and permits scans of up to 25,000 words. The company says submitted text may be processed by third-party AI and infrastructure providers and retained only as long as needed to deliver and support the service. It also says there are no LMS integrations at the moment.
Who it is for
The service is described for students, teachers, writers, teams, educators, publishers, and editorial teams. Its web, extension, Word, and API options may suit people checking text in different workflows.
What is good
- Returns sentence-level results and an overall AI probability.
- Includes citation verification and plagiarism checking tools.
- Offers a Chrome extension, Word add-in, and REST API.
- Free plan allows 10,000 words monthly.
What to know first
- Free plan limits each use to 500 words.
- Benchmark coverage is limited to English.
- No LMS integrations are available at the moment.
- Submitted text may be processed by third parties.
Verdict
AI Detectors.io combines text analysis with writing and verification tools across several access options. Readers should note the free-plan scan limit, English benchmark scope, and stated handling of submitted text.
AI Detectors.io plans and pricing
All plansCompared on AI content detectors
- Free plan
- Yes
- Paid from
- $8.33/mo
- Word limit
- 25,000 words
- Paraphrase detection
- Yes
- API access
- Yes
- Browser extension
- Yes
- Batch scanning
- Yes
