RankDude
Updated 11/02/2026 · next update 12/01/2026

AI grammar checker market, October 2026

Miles FosterOwner and tester, RankDude

The market▼ Shrinkingbut name searches are up 90% since October 2025

Visits, year on year, without Claude
-24%
Visits vs September 2026
-1.6%
Name searches vs October 2025
+90%

Every month I measure Google visits to the 21 AI grammar checker sites I track, and how often people search for them by name. In October 2026 they got about 78 million visits, 8% more than a year ago but 2% fewer than in September 2026.

Below: who grew fastest (one site is up 319% in a year), who sits highest on Google, where the visitors live and what comes next.

Data from DataForSEO, Tranco, Chrome UX Report and Ahrefs · not a ranking

AI grammar checker market: the key numbers for October 2026

Four numbers for October 2026. Visits mean visits from Google search to the tracked sites. Tap one for the detail below.

  • The tracked sites got 78,192,141 visits from Google in October 2026, 8% more than a year ago and 2% fewer than in September 2026. Claude gained more visits on its own than the whole market gained in a year. Without it, visits would be down 24.4% on a year ago instead of up 8.1%.
  • “ai grammar checker” gets about 14,800 US searches a month. People searched the site names 13,919,790 times in the US in September 2026, 90% more often than in October 2025.
  • No tracked site is on Google’s first page for “ai grammar checker”; the highest is Engram, at position 11. Claude is the most-visited site.
  • 14.6% of visits came from the US (15.2% a year ago), then India, United Kingdom and Canada. The five most-visited sites took 83.8% of all visits.

1How many visits

In plain words: These sites got more visits from Google than a year ago (+8%), and October 2026 was about the same as September 2026 (-2%). Claude gained more visits on its own than the whole market gained in a year. Without it, visits would be down 24.4% on a year ago instead of up 8.1%.

Visits, October 2026
78,192,141 (+8.1% on a year ago, -1.6% on September 2026)
US visits
11,431,684 (+3.7% on a year ago)
24-month peak
79,431,489 in September 2026

WorldVisits a month to AI grammar checker sites, worldwide

025M50M75M100MNov 24Jan 25Mar 25May 25Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jul 26Oct 2678M
Low 38MHigh 79MAverage 70M
Hover, tap, or use the arrow keys to inspect a month

Source: DataForSEO, Google search visits, all tracked sites.

Miles explains

Judge this line on the year, not the last dot: visits are 8% above a year ago, and 2% below the September 2026 high. One site winning or losing a ranking can swing a single month a lot.

2How many people went looking

People typed a site’s name into Google 90% more often than in October 2025 (+90%). That is the loyalty number, because nobody types a name by accident.

Searches for "ai grammar checker"
14,800 a month in the US, 40,500 worldwide (12-month average)
Name searches, September 2026
13,919,790 in the US (+89.8% since October 2025), 80,259,680 worldwide

USSearches a month for "ai grammar checker", United States

06.3K12.5K18.8K25.0KOct 25Dec 25Feb 26Apr 26Jun 26Sep 2612.1K
Low 9.9KHigh 22.2KAverage 14.6K
Hover, tap, or use the arrow keys to inspect a month

Source: Google Ads via DataForSEO.

USSearches a month for the site names, United States

05.0M10M15M20MOct 25Dec 25Feb 26Apr 26Jun 26Sep 2614M
Low 5.5MHigh 14MAverage 9.5M
Hover, tap, or use the arrow keys to inspect a month

Source: Google Ads via DataForSEO, to September 2026.

Most searched by name, US

Ordered by US searches for the brand name in September 2026. A measured order, not a ranking.

Rising next to the term on Google Trends: “harper grammar checker”, “claude ai” and “languagetool”.

Miles explains

Name searches are the number I trust most. They are up 90%, and nobody types a site’s name by accident, so this shows more people coming back on purpose.

3Who is on Google's first page

No tracked site is on Google’s first page for “ai grammar checker”; the highest-placed is Engram, at position 11. Being on that page is the biggest single thing that decides how many visits a site gets.

Ordered by US Google position for “ai grammar checker”, then Tranco rank. A measured order, not a ranking.

Site

  • Engram
    Google US
    11
    Tranco
    655,650
    Move in 41 days
    ▲ 304,455
    Search visits
    442,261
  • Grammarly
    Google US
    –
    Tranco
    323
    Move in 41 days
    ▲ 244
    Search visits
    21,845,704
  • Claude
    Google US
    –
    Tranco
    417
    Move in 41 days
    ▲ 21
    Search visits
    28,705,332
  • Ahrefs
    Google US
    –
    Tranco
    2,132
    Move in 41 days
    ▼ 62
    Search visits
    1,879,377
  • ZeroGPT
    Google US
    –
    Tranco
    7,167
    Move in 41 days
    ▲ 4,486
    Search visits
    10,113,046
  • LanguageTool
    Google US
    –
    Tranco
    13,242
    Move in 41 days
    ▲ 409
    Search visits
    2,421,312
  • Hemingway
    Google US
    –
    Tranco
    28,282
    Move in 41 days
    ▼ 944
    Search visits
    54,429
  • ProWritingAid
    Google US
    –
    Tranco
    29,879
    Move in 41 days
    ▲ 409
    Search visits
    1,738,220
  • Paperpal
    Google US
    –
    Tranco
    45,674
    Move in 41 days
    ▲ 6,449
    Search visits
    733,563
  • Wordtune
    Google US
    –
    Tranco
    52,336
    Move in 41 days
    ▲ 1,746
    Search visits
    100,329
  • Ginger
    Google US
    –
    Tranco
    70,964
    Move in 41 days
    ▲ 584
    Search visits
    1,795,220
  • Sapling
    Google US
    –
    Tranco
    71,770
    Move in 41 days
    ▲ 8,184
    Search visits
    1,027,702
  • GrammarCheck
    Google US
    –
    Tranco
    120,153
    Move in 41 days
    ▼ 3,048
    Search visits
    2,422,232
  • WhiteSmoke
    Google US
    –
    Tranco
    136,255
    Move in 41 days
    ▲ 50,835
    Search visits
    16,447
  • Outwrite
    Google US
    –
    Tranco
    191,716
    Move in 41 days
    ▲ 30,520
    Search visits
    2,577

Source: DataForSEO (US Google positions) and Tranco, October 2026. First 15 of 21 sites shown.

Miles explains

No tracked site sits high on Google for “ai grammar checker”, so most visits here come from people who already know the names.

4Who grew, who faded

Biggest gain in October 2026: WhiteSmoke (+58%); biggest loss: ZeroGPT (-25%). Year-on-year growers are on the demand page.

Biggest moves in October 2026

Up this month

  • WhiteSmoke
    Sep 26
    10,418
    Oct 26
    16,447
    Change
    +57.9%
  • Claude
    Sep 26
    22,556,217
    Oct 26
    28,705,332
    Change
    +27.3%
  • Harper
    Sep 26
    23,669
    Oct 26
    25,649
    Change
    +8.4%
  • Trinka
    Sep 26
    428,180
    Oct 26
    444,396
    Change
    +3.8%

Down this month

  • ZeroGPT
    Sep 26
    13,415,990
    Oct 26
    10,113,046
    Change
    -24.6%
  • Wordvice AI
    Sep 26
    2,954,094
    Oct 26
    2,456,452
    Change
    -16.8%
  • Paperpal
    Sep 26
    875,763
    Oct 26
    733,563
    Change
    -16.2%
  • LanguageTool
    Sep 26
    2,861,217
    Oct 26
    2,421,312
    Change
    -15.4%
  • Hemingway
    Sep 26
    62,794
    Oct 26
    54,429
    Change
    -13.3%
  • Ahrefs
    Sep 26
    2,165,707
    Oct 26
    1,879,377
    Change
    -13.2%

Brand demand, since October 2025

Searched more

  • Claude
    Oct 25
    1,220,000
    Sep 26
    9,140,000
    Change
    +649.2%
  • Toolsaday
    Oct 25
    8,100
    Sep 26
    12,100
    Change
    +49.4%
  • GrammarCheck
    Oct 25
    1,000,000
    Sep 26
    1,220,000
    Change
    +22.0%

Searched less

Source: Google Ads via DataForSEO.

5Where the visitors live

About 15 of every 100 visits come from the United States.

US share of visits
14.6% (15.2% a year ago)
Largest outside the US
India, United Kingdom and Canada
US share of "ai grammar checker" searches
37%

USShare of visits that come from the US (%)

05101520Nov 24Jan 25Mar 25May 25Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jul 26Oct 2614.6
Low 11.4High 17.8Average 16
Hover, tap, or use the arrow keys to inspect a month

US share of worldwide search visits, month by month.

Country

  • India
    Search visits a month
    11,814,827
    Share of the measured countries
    56%
  • United Kingdom
    Search visits a month
    2,869,699
    Share of the measured countries
    13.6%
  • Canada
    Search visits a month
    2,274,152
    Share of the measured countries
    10.8%
  • Australia
    Search visits a month
    1,379,662
    Share of the measured countries
    6.5%
  • France
    Search visits a month
    1,175,413
    Share of the measured countries
    5.6%
  • Germany
    Search visits a month
    828,004
    Share of the measured countries
    3.9%
  • Brazil
    Search visits a month
    759,926
    Share of the measured countries
    3.6%

Source: DataForSEO, October 2026.

Miles explains

The US is the single biggest market, but only about 15 in every 100 visits. India alone is 56% of the countries I measure outside it.

6Links and ratings

The tracked sites had 454,296 referring domains between them in October 2026; this is the first reading, so there is no year-on-year figure yet. The average Domain Rating is 69. Claude has the strongest link profile at DR 92.

By Domain Rating (Ahrefs)

By referring domains

Source: DataForSEO and Ahrefs, October 2026.