Brandwave

Amazon Polly vs Cartesia:Which is more popular?

In September 2026, Cartesia had more branded searches than Amazon Polly among text to speech APIs worldwide. Cartesia had about 201,000 branded searches, while Amazon Polly had 12,100. Cartesia made up 2.7% of all text to speech API searches we track, and Amazon Polly accounted for 0.16%. When we asked ChatGPT and Google AI Overviews about text to speech APIs, Cartesia appeared in three of the five answers and Amazon Polly in two. Cartesia was mentioned before Amazon Polly in every answer.

Among text to speech APIs worldwide in September 2026

Who do people search for more?

Cartesia, about 17 searches for every 1 for Amazon Polly

Cartesia 201K searchesAmazon Polly 12.1K searches

Who does AI mention more?

Cartesia, mentioned in 3 of 5 answers, Amazon Polly in 2

Cartesia in 3 of 5Amazon Polly in 2 of 5

Who does AI recommend more?

Cartesia, named ahead of Amazon Polly in every answer

Cartesia first in 3Amazon Polly never first

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Top text to speech APIs in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Cartesia was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Amazon Polly was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Cartesia was listed before Amazon Polly in every answer.

Most recommended by AI

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

  1. ElevenLabs1st
  2. Cartesia2nd
  3. Amazon Polly3rd
  4. Murf AI–
  5. Play.ht–
  6. Resemble AI–

Mentioned by AI

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

  • ElevenLabs5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Cartesia3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Amazon Polly2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Murf AI0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Play.ht0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Resemble AI0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about text to speech APIs

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 19, 2026.

Is Amazon Polly or Cartesia more popular in search?

This chart shows how often people search Google for Amazon Polly and Cartesia by name. Each line represents a brand's share of searches for all six text to speech APIs we track, month by month, from English-language searches worldwide.

Amazon Polly and Cartesia among text to speech APIs worldwide, by month

Share of searches by month for Cartesia, Amazon Polly. The figures are in the table below the chart.

View monthly share of searches table
MonthElevenLabsCartesiaMurf AIPlay.htResemble AIAmazon Polly
Oct 202594.9%0.11%2.4%1.8%0.55%0.35%
Nov 202595.2%0.16%2.3%1.5%0.55%0.36%
Dec 202595.7%0.08%1.7%1.7%0.48%0.31%
Jan 202695.7%0.14%1.7%1.9%0.39%0.21%
Feb 202695.6%0.16%1.6%2%0.38%0.24%
Mar 202696.1%0.14%1.4%1.9%0.26%0.2%
Apr 202695.8%0.13%1.6%1.9%0.31%0.2%
May 202696.6%0.2%1.4%1.4%0.21%0.16%
Jun 202697.7%0.25%0.97%0.77%0.18%0.11%
Jul 202697.6%0.38%0.97%0.77%0.15%0.14%
Aug 202697.3%0.86%1%0.58%0.15%0.12%
Sep 202695.5%2.7%0.96%0.45%0.17%0.16%

How has the Amazon Polly and Cartesia comparison changed over the last 12 months?

3 findings
  • The lead changed hands once in the 12 months ending September 2026: Cartesia took it in May 2026.
  • Across the 12 months ending September 2026, Amazon Polly’s share of searches among text to speech APIs worldwide moved from 0.35% to 0.16%, and its estimated monthly branded searches moved from 22.2K to 12.1K.
  • Across the 12 months ending September 2026, Cartesia’s share of searches among text to speech APIs worldwide moved from 0.11% to 2.7%, and its estimated monthly branded searches moved from 6.6K to 201K.

How did search popularity change for text to speech APIs worldwide in September 2026?

2 changes

  1. In September 2026, Cartesia overtook Murf AI to rank 2nd among text to speech APIs worldwide, with 2.7% of the searches.

  2. Estimated monthly branded searches for Amazon Polly worldwide fell 45.5% over 12 measured months, from 22.2K to 12.1K in September 2026.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using Amazon Polly’s and Cartesia’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.

Amazon Polly

1 branded search term

  • amazonpolly

Cartesia

1 branded search term

  • cartesia ai

How the Brand Demand Index is measured

Other head-to-heads among text to speech APIs

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