Copyleaks vs Grammarly:Which is more popular?
In September 2026, Grammarly had more branded searches than Copyleaks among plagiarism checkers worldwide. Grammarly had about 5 million branded searches, while Copyleaks had 246,000. Grammarly made up 61.8% of all plagiarism checker searches we track, and Copyleaks accounted for 3%. When we asked ChatGPT and Google AI Overviews about plagiarism checkers, Grammarly appeared in four of the five answers and Copyleaks in three. Copyleaks was mentioned before Grammarly in three out of five answers.
Who do people search for more?
Grammarly, about 20 searches for every 1 for Copyleaks
Who does AI mention more?
Grammarly, mentioned in 4 of 5 answers, Copyleaks in 3
Who does AI recommend more?
Copyleaks, named ahead of Grammarly in 3 of 5 answers
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Top plagiarism checkers in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Grammarly was mentioned in four out of five: in two of the three ChatGPT answers and in both Google AI Overviews. Copyleaks was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Copyleaks was listed before Grammarly in three out of five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Scribbr5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers- Grammarly4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Quetext4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Turnitin3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers- Copyleaks3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- PlagScan0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Unicheck0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about plagiarism checkers
5 answers
Asked ChatGPT
“Which plagiarism checker should I use?”
Asked ChatGPT
“What are the best plagiarism checkers?”
Asked ChatGPT
“What's the best plagiarism checker for copy checking?”
Searched Google, AI Overview
“plagiarism checkers”
Searched Google, AI Overview
“ai plagiarism checker”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is Copyleaks or Grammarly more popular in search?
This chart shows how often people search Google for Copyleaks and Grammarly by name. Each line represents a brand's share of searches for all seven plagiarism checkers we track, month by month, from English-language searches worldwide.
Share of searches by month for Grammarly, Copyleaks. The figures are in the table below the chart.
View monthly share of searches table
| Month | Grammarly | Turnitin | Scribbr | Copyleaks | Quetext | PlagScan | Unicheck |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 64.4% | 23.6% | 8.6% | 2.6% | 0.43% | 0.29% | 0.09% |
| Nov 2025 | 57.2% | 31.3% | 7.7% | 2.8% | 0.57% | 0.31% | 0.14% |
| Dec 2025 | 61% | 27.3% | 8.2% | 2.5% | 0.49% | 0.33% | 0.12% |
| Jan 2026 | 64.3% | 23.5% | 8.7% | 2.6% | 0.43% | 0.35% | 0.08% |
| Feb 2026 | 68.5% | 20.5% | 7.5% | 2.8% | 0.37% | 0.3% | 0.07% |
| Mar 2026 | 64.1% | 23.4% | 8.6% | 3.2% | 0.42% | 0.23% | 0.08% |
| Apr 2026 | 61.3% | 27.4% | 6.7% | 3.7% | 0.5% | 0.22% | 0.12% |
| May 2026 | 56.8% | 31.1% | 7.6% | 3.4% | 0.56% | 0.25% | 0.14% |
| Jun 2026 | 52.8% | 35.3% | 7.1% | 3.9% | 0.52% | 0.29% | 0.09% |
| Jul 2026 | 62.1% | 27.8% | 5.6% | 3.7% | 0.5% | 0.27% | 0.05% |
| Aug 2026 | 65.9% | 24.2% | 5.9% | 3.2% | 0.44% | 0.24% | 0.04% |
| Sep 2026 | 61.8% | 27.7% | 6.8% | 3% | 0.41% | 0.18% | 0.07% |
How has the Copyleaks and Grammarly comparison changed over the last 12 months?
3 findings
- Grammarly 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 plagiarism checkers worldwide moved from 2.6% to 3%, and its estimated monthly branded searches moved from 301K to 246K.
- Across the 12 months ending September 2026, Grammarly’s share of searches among plagiarism checkers worldwide moved from 64.4% to 61.8%, and its estimated monthly branded searches moved from 7.5M to 5M.
How did search popularity change for plagiarism checkers worldwide in September 2026?
2 changes
In September 2026, Grammarly lost share of searches among plagiarism checkers worldwide, from 65.9% to 61.8%.
Copyleaks’ share of searches among plagiarism checkers worldwide has lost ground for 3 months in a row, from 3.9% to 3% in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Copyleaks’ and Grammarly’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 plagiarism checkers
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