AI plagiarism checker statistics, October 2026

Four numbers for October 2026, each counted over the month. Visits mean visits from Google search to the 22 AI plagiarism checker sites I track. Tap one for the details.

• Visits from Google34Mvisits-37% vs a year ago
• Google searches49.5Ksearchesfor "ai plagiarism checker"
• Most visited site22MvisitsGrammarly, 64% of all
• Expected in November33Mvisits-2% vs last month

• 34,270,367 Google visits went to the 22 AI plagiarism checker sites RankDude tracks in October 2026, 37% fewer than a year earlier.
• Shrinking: the AI plagiarism checker market is shrinking.
• 49,500 searches a month for “ai plagiarism checker” worldwide, 20% of them in the US (Google Ads, 12-month average).
• 64% of all visits go to Grammarly, the most-visited AI plagiarism checker; the five most-visited take 89.4%.
• 18.6% of visits come from the United States, followed by India, the United Kingdom and Canada.
• 33,469,285 visits expected in November 2026, likely between 29M and 38M.

Source: DataForSEO, Google Ads and Google Trends, October 2026, compiled by RankDude.

Shrinking.

Over two years, visits went from 32M in November 2024 to a high of 64M in December 2024, and stand at 34M in October 2026. Five sites take 89.4% of visits, so one ranking change at the top moves the whole line.

Visits, year on year

-37%

Visits, last six months

-35%

Name searches, US

-32%

Busiest month (2 years)

December 2024, 64M visits

Miles explains

I only call a market growing when visits and name searches agree. Here visits are down and name searches are down, so they agree.

Open the AI plagiarism checker market demand page

“ai plagiarism checker” is searched about 49,500 times a month worldwide, 20% of it in the US.

Google Trends barely registered “ai plagiarism checker” until January 2023; interest then climbed to its peak in November 2024.

Searches a month, US

9,900

Google Trends now

37/100 -49%

Five-year peak

94/100 in November 2024

Miles explains

Google Trends shows direction, not volume. Interest is lower than a year ago, and I only trust that when the visits move the same way.

Open the AI plagiarism checker search trends page

Fewer visits than a year ago, fewer people searching by name, and the next six months look like a slide.

The fastest growers over the year, StrikePlagiarism, Originality.ai and Compilatio, grew fastest, mostly from a smaller base. The losers, led by Plagium, lost most of their search visits (-80%).

Visits vs September 2026

-11%

Biggest gain this month

Yomu +25%

Biggest loss this month

Compilatio -67%

Miles explains

Huge percentages like StrikePlagiarism’s +31% usually mean one site won a big Google ranking from a small start. I watch whether it holds the next month.

Open the AI plagiarism checker monthly analysis page

I expect November 2026 to be about the same as October 2026, and the next six months to look down.

The forecast carries the level of recent months forward, not the trend line, because that version missed least when tested on past months. November is usually a busier month than average for searches, but the calendar did not improve the forecast, so it is left out.

Expected in November 2026

33,469,285 visits

Likely range

29M to 38M

Expected in May 2027

31M -10%

Past forecasts in range

4 of 6 months

Miles explains

Read the range, not the single number: tested on the last 6 months, my method landed inside its range 4 times.

Open the AI plagiarism checker monthly forecast page

The most visited is Grammarly, with 22 million visits a month, 64% of all visits.

Grammarly and SmallSEOTools together hold 77% of all visits. Below the top five the market is long and thin: the other 17 sites share 10.6%.

Top five sites

89.4% of all visits

Visits from the US

18.6%

Largest markets outside the US

India, United Kingdom and Canada

Sites tracked

22

Miles explains

Grammarly alone has 64% of all visits. That’s a big lead, but one Google update can close it fast.

Open the AI plagiarism checker industry report page

Yes. Every number on these pages comes from two CSV files, free to download.

sites.csv has one row per site: its Google US position for “ai plagiarism checker”, Tranco rank, Chrome UX tier, visits from Google worldwide and in the US, name searches, Domain Rating and referring domains, with the month each figure covers. market.csv has the monthly totals across the tracked sites: visits worldwide and in the US, name searches and referring domains. Blanks mean the source had no figure, never zero.

Cite as: Miles Foster, “AI Plagiarism Checker Statistics, October 2026”, RankDude, https://rankdude.ai/statistics/ai-plagiarism-checker