Undetectable AI vs WriteHuman:Which is searched more?
In September 2026, WriteHuman had more branded searches than Undetectable AI among AI humanizer tools worldwide. WriteHuman had about 33,100 branded searches, while Undetectable AI had 15,000. WriteHuman made up 4.5% of all AI humanizer tool searches we track, and Undetectable AI accounted for 2.1%. These are worldwide searches for English-language branded terms.
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Is Undetectable AI or WriteHuman more popular in search?
Compare the tools that rewrite AI-generated text so it reads more like a person wrote it. 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 WriteHuman, Undetectable AI. The figures are in the table below the chart.
View monthly share of searches table
| Month | Humbot | StealthWriter | Grubby AI | BypassGPT | QuillBot | Phrasly | WriteHuman | HIX Bypass | Undetectable AI | Walter Writes | Humanize AI Pro |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 17.8% | 14.6% | 6.6% | 32.6% | 9% | 1.3% | 5.4% | 9.8% | 1.2% | 1.3% | 0.39% |
| Nov 2025 | 16.6% | 16.6% | 16.6% | 24.8% | 7.4% | 1.2% | 5% | 9.1% | 1.1% | 1.5% | 0.3% |
| Dec 2025 | 21.2% | 17.4% | 11.6% | 21.2% | 8.5% | 1.3% | 5.2% | 9.5% | 1.7% | 1.9% | 0.38% |
| Jan 2026 | 23.5% | 19.3% | 10.6% | 19.3% | 7.9% | 1.4% | 4.7% | 7.1% | 3.5% | 2.1% | 0.42% |
| Feb 2026 | 20.1% | 16.5% | 9.1% | 9.1% | 25.1% | 1.5% | 4.1% | 4.1% | 8.4% | 1.8% | 0.36% |
| Mar 2026 | 19.9% | 19.9% | 10.9% | 10.9% | 22.3% | 1.8% | 4% | 4% | 3.6% | 2.2% | 0.36% |
| Apr 2026 | 17.3% | 21.2% | 14.2% | 11.6% | 9.9% | 2.9% | 4.3% | 4.3% | 2.6% | 2.3% | 9.5% |
| May 2026 | 16.4% | 16.4% | 11% | 11% | 30.6% | 2.7% | 3.3% | 4% | 2.4% | 1.8% | 0.44% |
| Jun 2026 | 17.7% | 11.9% | 6.5% | 6.5% | 43.9% | 2.4% | 2.9% | 3.6% | 3% | 1.3% | 0.39% |
| Jul 2026 | 17.2% | 11.5% | 5.2% | 5.2% | 43.5% | 1.9% | 2.3% | 2.3% | 9.7% | 1% | 0.3% |
| Aug 2026 | 16% | 10.7% | 5.9% | 8.8% | 48.4% | 2.2% | 2.6% | 2.2% | 2% | 0.96% | 0.35% |
| Sep 2026 | 27.5% | 18.5% | 15.1% | 12.4% | 9.8% | 4.5% | 4.5% | 3% | 2.1% | 2% | 0.6% |
How has the Undetectable AI and WriteHuman comparison changed over the last 12 months?
3 findings
- The lead changed hands 4 times in the 12 months ending September 2026: Undetectable AI took it in February 2026, WriteHuman took it in March 2026, Undetectable AI took it in June 2026, WriteHuman took it in August 2026.
- Across the 12 months ending September 2026, Undetectable AI’s share of searches among AI humanizer tools worldwide moved from 1.2% to 2.1%, and its estimated monthly branded searches moved from 16.7K to 15K.
- Across the 12 months ending September 2026, WriteHuman’s share of searches among AI humanizer tools worldwide moved from 5.4% to 4.5%, and its estimated monthly branded searches moved from 74K to 33.1K.
How did search popularity change for AI humanizer tools worldwide in September 2026?
3 changes
In September 2026, Phrasly overtook WriteHuman and HIX Bypass to rank 6th among AI humanizer tools worldwide, with 4.5% of the searches.
In September 2026, WriteHuman gained share of searches among AI humanizer tools worldwide, from 2.6% to 4.5%.
Estimated monthly branded searches for Undetectable AI worldwide fell 10.2% over 12 measured months, from 16.7K to 15K in September 2026.
How are branded searches counted?
3 search terms
Brandwave collects information about searches that people make online using Undetectable AI’s and WriteHuman’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.
Undetectable AI
2 branded search terms
- undetectable ai detector
- undetectable ai humanizer
WriteHuman
1 branded search term
- writehuman
Other head-to-heads among AI humanizer tools
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