C
ContentDetector
35
Stack Score
Best for
Best for casual or solo users wanting a fast free check.
At a glance
- Pricing
- freemiumfrom $9/mo
- Setup time
- 1 minute
- Learning curve
- easy
- Last verified
- 5/26/2026
What we love
- ✓Truly free for basics
- ✓No signup friction
- ✓Multi-language
Where it falls short
- −Like all detectors, imperfect
- −Limited beyond free check
- −Smaller than Winston/Originality
Pricing
2 tiers
Free
$0
perpetual
- ✓Basic checks
Pro
$9
per month
- ✓Bulk + API
Overview
ContentDetector.ai is a free AI text detector — paste content, get a probability score. No signup required for basic checks.
Key features
- ●Free no-signup checks
- ●Multi-language
- ●Sentence-level scoring
- ●Premium API option
- ●Plagiarism add-on
Best use cases
Quick AI check
Quickly check a piece of text without paying or signing up.
Light publisher use
Add a free check to your content review workflow.
Integrations
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