GPTZero vs Turnitin:Which is more popular?
In September 2026, Turnitin had more branded searches than GPTZero among AI content detectors worldwide. Turnitin had about 2.2 million branded searches, while GPTZero had 1.5 million. Turnitin made up 36.4% of all AI content detector searches we track, and GPTZero accounted for 24.4%. When we asked ChatGPT and Google AI Overviews about AI content detectors, GPTZero appeared in all five answers and Turnitin in one. GPTZero was mentioned before Turnitin in every answer.
Who do people search for more?
Turnitin, about 49% more searches than GPTZero
Who does AI mention more?
GPTZero, mentioned in every answer we collected
Who does AI recommend more?
GPTZero, named ahead of Turnitin in every answer
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Top AI content detectors in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, GPTZero appeared in all five answers. Turnitin was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews. GPTZero was listed before Turnitin in every answer.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
- GPTZero1st
Originality.ai2nd
Copyleaks3rd
Pangram4th
Winston AI5th
ZeroGPT6th- Turnitin7th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- GPTZero5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Copyleaks5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Originality.ai4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Pangram3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- ZeroGPT2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Turnitin1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Winston AI1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
See every answer about AI content detectors
5 answers
Asked ChatGPT
“Which AI content detector should I use?”
Asked ChatGPT
“What are the best AI content detectors?”
Asked ChatGPT
“What's the best AI content detector for written text checked?”
Searched Google, AI Overview
“ai content detector”
Searched Google, AI Overview
“best ai detector”
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is GPTZero or Turnitin more popular in search?
This chart shows how often people search Google for GPTZero and Turnitin by name. Each line represents a brand's share of searches for all seven AI content detectors we track, month by month, from English-language searches worldwide.
Share of searches by month for Turnitin, GPTZero. The figures are in the table below the chart.
View monthly share of searches table
| Month | Turnitin | ZeroGPT | GPTZero | Copyleaks | Originality.ai | Pangram | Winston AI |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 34.3% | 34.3% | 22.9% | 3.8% | 2.5% | 0.06% | 2.1% |
| Nov 2025 | 38.7% | 31.7% | 21.2% | 3.5% | 2.9% | 0.08% | 2% |
| Dec 2025 | 36.3% | 29.7% | 24.3% | 3.3% | 4% | 0.11% | 2.2% |
| Jan 2026 | 33.7% | 33.7% | 22.5% | 3.7% | 3.7% | 0.19% | 2.5% |
| Feb 2026 | 33.2% | 33.2% | 22.1% | 4.5% | 3.7% | 0.22% | 3.1% |
| Mar 2026 | 31.5% | 31.5% | 25.7% | 4.2% | 4.3% | 0.4% | 2.4% |
| Apr 2026 | 35.7% | 29.2% | 23.8% | 4.8% | 4% | 0.31% | 2.2% |
| May 2026 | 38.1% | 31.1% | 20.9% | 4.2% | 3.5% | 0.34% | 1.9% |
| Jun 2026 | 40% | 32.7% | 17.9% | 4.4% | 3% | 0.71% | 1.4% |
| Jul 2026 | 37.7% | 30.7% | 20.7% | 5.1% | 3.4% | 0.85% | 1.6% |
| Aug 2026 | 33.8% | 33.8% | 22.5% | 4.5% | 2.5% | 1.4% | 1.4% |
| Sep 2026 | 36.4% | 29.8% | 24.4% | 4% | 2.2% | 1.7% | 1.5% |
How has the GPTZero and Turnitin comparison changed over the last 12 months?
3 findings
- Turnitin was ahead of GPTZero in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, GPTZero’s share of searches among AI content detectors worldwide moved from 22.9% to 24.4%, and its estimated monthly branded searches moved from 1.8M to 1.5M.
- Across the 12 months ending September 2026, Turnitin’s share of searches among AI content detectors worldwide moved from 34.3% to 36.4%, and its estimated monthly branded searches moved from 2.7M to 2.2M.
How did search popularity change for AI content detectors worldwide in September 2026?
2 changes
In September 2026, Turnitin gained share of searches among AI content detectors worldwide, from 33.8% to 36.4%.
In September 2026, GPTZero gained share of searches among AI content detectors worldwide, from 22.5% to 24.4%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using GPTZero’s and Turnitin’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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