GPTZero
AI text detector used by schools and publishers to estimate whether writing was machine generated.
why this verdict
Downgrade — pay for the workflow, not the AI
Google Docs version history covers the headline feature free, so the $15/mo is now paying for the workflow around it.
- A named launch, not a vibe named, unlinked
- Frontier models writing prose that statistical detectors can no longer reliably flag. OpenAI, March 19, 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: Google Docs version history.
- What the call is worth $180/yr
- $15/mo at the entry paid tier — $180 a year per seat.
- Threatened by
- OpenAI
- Since
- March 19, 2025
- List price
- $15/mo
- Per year
- $180
The backstory
GPTZero scores a document for how likely it is to be machine written and reports which passages look synthetic. Detection is losing an arms race it cannot win: each model generation reads more like a person, humanising tools sit in front of the detector, and false accusations against real students carry a serious cost. Institutions still buy it for process and deterrence, which keeps revenue alive, but the core claim is eroding.
Escape hatches
switching could free up $180/yrDetection bundled with plagiarism checking
copyleaks.com open_in_newInstitutional integrity platform used by universities
turnitin.com open_in_newProcess evidence beats probabilistic detection
docs.google.com open_in_new1 of 3 replacements have a usable free tier.