Copyleaks vs Turnitin:Which is searched more?
In September 2026, Turnitin had more branded searches than Copyleaks among AI content detectors worldwide. Turnitin had about 2.2 million branded searches, while Copyleaks had 246,000. Turnitin made up 36.4% of all AI content detector searches we track, and Copyleaks accounted for 4%. These are worldwide searches for English-language branded terms.
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Is Copyleaks or Turnitin more popular in search?
Compare the tools that detect AI written text. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of searches by month for Turnitin, Copyleaks. 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 Copyleaks and Turnitin comparison changed over the last 12 months?
3 findings
- Turnitin was ahead of Copyleaks in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Copyleaks’ share of searches among AI content detectors worldwide moved from 3.8% to 4%, and its estimated monthly branded searches moved from 301K to 246K.
- 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, Copyleaks lost share of searches among AI content detectors worldwide, from 4.5% to 4%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Copyleaks’ 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.
Other head-to-heads among AI content detectors
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