Brandwave

OpenSearch vs SerpApi:Which is more popular?

In September 2026, SerpApi had more branded searches than OpenSearch among search API platforms worldwide. SerpApi had about 74,000 branded searches, while OpenSearch had 60,500. SerpApi made up 14.4% of all search API platform searches we track, and OpenSearch accounted for 11.8%. When we asked ChatGPT and Google AI Overviews about search API platforms, SerpApi appeared in four of the five answers and OpenSearch in none.

Among search API platforms worldwide in September 2026

Who do people search for more?

SerpApi, about 22% more searches than OpenSearch

SerpApi 74K searchesOpenSearch 60.5K searches

Who does AI mention more?

SerpApi, mentioned in 4 of 5 answers, OpenSearch in 0

SerpApi in 4 of 5OpenSearch in 0 of 5

Who does AI recommend more?

SerpApi, the only one of the two named

SerpApi first in 4OpenSearch never named

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Top search API platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, SerpApi was mentioned in four out of five: in two of the three ChatGPT answers and in both Google AI Overviews. OpenSearch 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. Tavily1st
  2. SerpApi1st
  3. Exa3rd
  4. Serper4th
  5. Brave Search API5th
  6. Firecrawl6th
  7. Algolia7th
  8. Typesense8th
  9. Meilisearch9th
  10. +1 more
  11. OpenSearch–

Mentioned by AI

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

  • SerpApi4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Firecrawl3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Tavily3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Brave Search API3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Exa3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Serper3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Algolia1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Meilisearch1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Typesense1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • OpenSearch0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

+1 more

See every answer about search API platforms

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 21, 2026.

Is OpenSearch or SerpApi more popular in search?

This chart shows how often people search Google for OpenSearch and SerpApi by name. Each line represents a brand's share of searches for all 11 search API platforms we track, month by month, from English-language searches worldwide.

OpenSearch and SerpApi among search API platforms worldwide, by month

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

View monthly share of searches table
MonthFirecrawlTavilySerpApiOpenSearchAlgoliaBrave Search APIExaMeilisearchSerperTypesenseElastic
Oct 202518.6%12.4%18.6%15.2%13.5%2.5%3.2%6.8%1.8%3.7%3.7%
Nov 202516.2%13.2%19.8%16.2%14.2%2.6%2.8%5.9%2%3.2%3.9%
Dec 202518.8%12.6%23%12.6%11.2%2.1%6.4%5.6%1.6%3.1%3.1%
Jan 202621.9%14.7%18%12%10.6%6.6%5.3%4.4%1.6%2.4%2.6%
Feb 202618.8%18.8%15.4%10.3%7.5%15.4%3.8%3.8%1.7%2.1%2.3%
Mar 202622.9%22.9%12.6%8.4%7.4%12.6%3.4%3.8%2%2.1%2%
Apr 202630%20.2%13.5%9%7.9%6%3.9%3.3%1.9%2.2%2%
May 202627.9%22.8%12.5%10.2%7.3%5.6%4.2%3.8%1.9%2%1.8%
Jun 202628.2%23.1%12.6%10.3%7.4%4.6%4.2%3.8%2%2.1%1.7%
Jul 202625.9%21.1%14.2%11.6%8.3%5.2%3.9%3.5%2.4%2.3%1.7%
Aug 202631.8%21.2%11.7%9.5%8.3%4.3%4.1%3.5%2%1.9%1.7%
Sep 202626.2%21.4%14.4%11.8%8.3%4.3%4.2%3.5%2.4%1.9%1.6%

How has the OpenSearch and SerpApi comparison changed over the last 12 months?

3 findings
  • SerpApi was ahead of OpenSearch in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, OpenSearch’s share of searches among search API platforms worldwide moved from 15.2% to 11.8%, and its estimated monthly branded searches held steady at 60.5K.
  • Across the 12 months ending September 2026, SerpApi’s share of searches among search API platforms worldwide moved from 18.6% to 14.4%, and its estimated monthly branded searches held steady at 74K.

How did search popularity change for search API platforms worldwide in September 2026?

2 changes

  1. In September 2026, SerpApi gained share of searches among search API platforms worldwide, from 11.7% to 14.4%.

  2. In September 2026, OpenSearch gained share of searches among search API platforms worldwide, from 9.5% to 11.8%.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using OpenSearch’s and SerpApi’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.

OpenSearch

1 branded search term

  • opensearch

SerpApi

1 branded search term

  • serpapi

How the Brand Demand Index is measured

Other head-to-heads among search API platforms

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