Brandwave

QuillBot vs StealthWriter:Which is more popular?

In September 2026, StealthWriter had more branded searches than QuillBot among AI humanizer tools worldwide. StealthWriter had about 135,000 branded searches, while QuillBot had 71,700. StealthWriter made up 18.5% of all AI humanizer tool searches we track, and QuillBot accounted for 9.8%. When we asked ChatGPT and Google AI Overviews about AI humanizer tools, QuillBot appeared in all five answers and StealthWriter in none.

Among AI humanizer tools worldwide in September 2026

Who do people search for more?

StealthWriter, about 88% more searches than QuillBot

StealthWriter 135K searchesQuillBot 71.7K searches

Who does AI mention more?

QuillBot, mentioned in every answer we collected

QuillBot in 5 of 5StealthWriter in 0 of 5

Who does AI recommend more?

QuillBot, the only one of the two named

QuillBot first in 4StealthWriter never named

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Top AI humanizer tools in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, QuillBot appeared in all five answers. StealthWriter did not appear in any of the five answers.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. QuillBot1st
  2. Undetectable AI2nd
  3. WriteHuman3rd
  4. Humanize AI Pro4th
  5. BypassGPT5th
  6. HIX Bypass5th
  7. Walter Writes7th
  8. Humbot–
  9. StealthWriter–
  10. Grubby AI–
  11. +1 more

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • QuillBot5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • WriteHuman3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Undetectable AI3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • HIX Bypass2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • BypassGPT1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Walter Writes1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Humanize AI Pro1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Humbot0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • StealthWriter0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Grubby AI0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

+1 more

See every answer about AI humanizer tools

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 22, 2026.

Is QuillBot or StealthWriter more popular in search?

This chart shows how often people search Google for QuillBot and StealthWriter by name. Each line represents a brand's share of searches for all 11 AI humanizer tools we track, month by month, from English-language searches worldwide.

QuillBot and StealthWriter among AI humanizer tools worldwide, by month

Share of searches by month for StealthWriter, QuillBot. The figures are in the table below the chart.

View monthly share of searches table
MonthHumbotStealthWriterGrubby AIBypassGPTQuillBotPhraslyWriteHumanHIX BypassUndetectable AIWalter WritesHumanize AI Pro
Oct 202517.8%14.6%6.6%32.6%9%1.3%5.4%9.8%1.2%1.3%0.39%
Nov 202516.6%16.6%16.6%24.8%7.4%1.2%5%9.1%1.1%1.5%0.3%
Dec 202521.2%17.4%11.6%21.2%8.5%1.3%5.2%9.5%1.7%1.9%0.38%
Jan 202623.5%19.3%10.6%19.3%7.9%1.4%4.7%7.1%3.5%2.1%0.42%
Feb 202620.1%16.5%9.1%9.1%25.1%1.5%4.1%4.1%8.4%1.8%0.36%
Mar 202619.9%19.9%10.9%10.9%22.3%1.8%4%4%3.6%2.2%0.36%
Apr 202617.3%21.2%14.2%11.6%9.9%2.9%4.3%4.3%2.6%2.3%9.5%
May 202616.4%16.4%11%11%30.6%2.7%3.3%4%2.4%1.8%0.44%
Jun 202617.7%11.9%6.5%6.5%43.9%2.4%2.9%3.6%3%1.3%0.39%
Jul 202617.2%11.5%5.2%5.2%43.5%1.9%2.3%2.3%9.7%1%0.3%
Aug 202616%10.7%5.9%8.8%48.4%2.2%2.6%2.2%2%0.96%0.35%
Sep 202627.5%18.5%15.1%12.4%9.8%4.5%4.5%3%2.1%2%0.6%

How has the QuillBot and StealthWriter comparison changed over the last 12 months?

3 findings
  • The lead changed hands 4 times in the 12 months ending September 2026: QuillBot took it in February 2026, StealthWriter took it in April 2026, QuillBot took it in May 2026, StealthWriter took it in September 2026.
  • Across the 12 months ending September 2026, QuillBot’s share of searches among AI humanizer tools worldwide moved from 9% to 9.8%, and its estimated monthly branded searches moved from 124K to 71.7K.
  • Across the 12 months ending September 2026, StealthWriter’s share of searches among AI humanizer tools worldwide moved from 14.6% to 18.5%, and its estimated monthly branded searches moved from 201K to 135K.

How did search popularity change for AI humanizer tools worldwide in September 2026?

4 changes

  1. In September 2026, Humbot overtook QuillBot to become the leader among AI humanizer tools worldwide, with 27.5% of the searches.

  2. In September 2026, StealthWriter overtook QuillBot to rank 2nd among AI humanizer tools worldwide, with 18.5% of the searches.

  3. In September 2026, Grubby AI overtook QuillBot and BypassGPT to rank 3rd among AI humanizer tools worldwide, with 15.1% of the searches.

  4. In September 2026, QuillBot lost share of searches among AI humanizer tools worldwide, from 48.4% to 9.8%.

How are branded searches counted?

3 search terms

Brandwave collects information about searches that people make online using QuillBot’s and StealthWriter’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.

QuillBot

2 branded search terms

  • quillbot ai humanizer
  • quillbot humanizer

StealthWriter

1 branded search term

  • stealthwriter

How the Brand Demand Index is measured

Other head-to-heads among AI humanizer tools

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