Brandwave

Perplexity vs Sider:Which is more popular?

In September 2026, Sider had more branded searches than Perplexity among AI browser extensions worldwide. Sider had about 33,100 branded searches, while Perplexity had 480. Sider made up 12.7% of all AI browser extension searches we track, and Perplexity accounted for 0.18%. When we asked ChatGPT and Google AI Overviews about AI browser extensions, Perplexity appeared in three of the five answers and Sider in two. Perplexity was mentioned before Sider in three out of four answers.

Among AI browser extensions worldwide in September 2026

Who do people search for more?

Sider, about 69 searches for every 1 for Perplexity

Sider 33.1K searchesPerplexity 480 searches

Who does AI mention more?

Perplexity, mentioned in 3 of 5 answers, Sider in 2

Perplexity in 3 of 5Sider in 2 of 5

Who does AI recommend more?

Perplexity, named ahead of Sider in 3 of 4 answers

Perplexity first in 3Sider first in 1

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Top AI browser extensions in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Perplexity was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Sider was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Perplexity was listed before Sider in three out of four answers.

Most recommended by AI

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

  1. Perplexity1st
  2. Sider2nd
  3. Monica3rd
  4. Grammarly4th
  5. Merlin5th
  6. Harpa5th
  7. MaxAI7th

Mentioned by AI

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

  • Monica3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Grammarly3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Perplexity3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Merlin2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Sider2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Harpa2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • MaxAI1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers

See every answer about AI browser extensions

5 answers

Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.

Is Perplexity or Sider more popular in search?

This chart shows how often people search Google for Perplexity and Sider by name. Each line represents a brand's share of searches for all seven AI browser extensions we track, month by month, from English-language searches worldwide.

Perplexity and Sider among AI browser extensions worldwide, by month

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

View monthly share of searches table
MonthMonicaGrammarlyMerlinSiderHarpaMaxAIPerplexity
Oct 202530.4%27.8%20.4%16.7%2.7%1.5%0.43%
Nov 202531.1%24.8%20.9%17.1%3.4%2.3%0.37%
Dec 202528.4%37.9%15.5%12.7%3.1%2.1%0.31%
Jan 202628.4%33.7%19%12.7%3.8%2.1%0.28%
Feb 202635.8%32.1%16.1%10.8%3.2%1.8%0.23%
Mar 202639.4%28.9%14.5%11.8%3.5%1.6%0.21%
Apr 202631%34.2%17.1%11.4%4.2%1.9%0.25%
May 202630.1%33.8%16.5%13.5%4%1.8%0.24%
Jun 202631.9%29.1%21.3%11.7%3.5%2.3%0.21%
Jul 202633.1%30.2%22.1%9.9%3%1.6%0.18%
Aug 202634.5%27.3%23%10.3%3.1%1.7%0.15%
Sep 202634.6%24.6%23.1%12.7%3.1%1.7%0.18%

How has the Perplexity and Sider comparison changed over the last 12 months?

3 findings
  • Sider was ahead of Perplexity in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Perplexity’s share of searches among AI browser extensions worldwide moved from 0.43% to 0.18%, and its estimated monthly branded searches moved from 1.9K to 480.
  • Across the 12 months ending September 2026, Sider’s share of searches among AI browser extensions worldwide moved from 16.7% to 12.7%, and its estimated monthly branded searches moved from 74K to 33.1K.

How did search popularity change for AI browser extensions worldwide in September 2026?

2 changes

  1. In September 2026, Sider gained share of searches among AI browser extensions worldwide, from 10.3% to 12.7%.

  2. Estimated monthly branded searches for Perplexity worldwide fell 74.7% over 12 measured months, from 1.9K to 480 in September 2026.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using Perplexity’s and Sider’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.

Perplexity

1 branded search term

  • perplexity extension

Sider

1 branded search term

  • sider ai

How the Brand Demand Index is measured

Other head-to-heads among AI browser extensions

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