Copyleaks
Plagiarism and AI content detection for education and enterprise.
why this verdict
Downgrade — pay for the workflow, not the AI
GPTZero covers the headline feature free, so the $10/mo is now paying for the workflow around it.
- A named launch, not a vibe named, unlinked
- AI text detection being fundamentally unreliable, and institutions abandoning detector-based policies. OpenAI, May 20, 2025 — no announcement link recorded yet.
- How much of the job it covers headline only editorial call
- The headline feature, but not the workflow, data or integrations around it.
- Is there a free way to do it? yes
- 1 of 3 listed replacements have a usable free tier: GPTZero.
- What the call is worth $120/yr
- $10/mo at the entry paid tier — $120 a year per seat.
- Threatened by
- OpenAI
- Since
- May 20, 2025
- List price
- $10/mo
- Per year
- $120
The backstory
Copyleaks does plagiarism detection and AI-writing detection, the latter being a product category built on shaky ground: false positives disproportionately flag non-native English writers, and OpenAI shut down its own detector for lack of accuracy. Universities have been quietly moving away from detector-based academic integrity policies toward assessment redesign. The traditional plagiarism business remains sound, and the AI detection half is selling certainty that does not exist.
Escape hatches
switching could free up $120/yrThe institutional standard for academic integrity
turnitin.com open_in_newDetection with more transparency about confidence
gptzero.me open_in_newAimed at publishers and content agencies
originality.ai open_in_new1 of 3 replacements have a usable free tier.