OpenAI speech-to-text API vs Speechmatics:Which is searched more?

Name: OpenAI speech-to-text API vs Speechmatics: Which is searched more?
Creator: Brandwave
License: https://creativecommons.org/licenses/by/4.0/

In September 2026, Speechmatics had more branded searches than OpenAI speech-to-text API among speech to text APIs worldwide. Speechmatics had about 9,900 branded searches, while OpenAI speech-to-text API had 140. Speechmatics made up 8.4% of all speech to text API searches we track, and OpenAI speech-to-text API accounted for 0.12%. These are worldwide searches for English-language branded terms.

Share of searches among speech to text APIs worldwide in September 2026Is OpenAI speech-to-text API or Speechmatics more popular in search?

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Is OpenAI speech-to-text API or Speechmatics more popular in search?

Compare the APIs that turn speech into text. 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.

OpenAI speech-to-text API and Speechmatics among speech to text APIs worldwide, by month

Month	Deepgram	AssemblyAI	Speechmatics	Rev AI	Google Cloud Speech-to-Text	Amazon Transcribe	OpenAI speech-to-text API
Oct 2025	49.5%	14.8%	12.1%	9%	9.9%	4.4%	0.17%
Nov 2025	46.6%	17.1%	11.4%	11.3%	9.3%	4.1%	0.13%
Dec 2025	56.7%	13.9%	9.3%	8.3%	7.6%	4.1%	0.13%
Jan 2026	54.3%	16.3%	8.9%	9.9%	7.3%	3.2%	0.13%
Feb 2026	53.5%	16%	8.7%	7.8%	10.7%	3.2%	0.15%
Mar 2026	56.2%	16.8%	7.5%	7.4%	9.2%	2.7%	0.13%
Apr 2026	55.3%	16.6%	7.4%	7.3%	11.1%	2.2%	0.13%
May 2026	58.1%	17.4%	7.8%	6.3%	7.8%	2.3%	0.31%
Jun 2026	60.7%	14.9%	8.1%	6.6%	6.6%	2.4%	0.72%
Jul 2026	59.7%	14.6%	8%	6.5%	8%	1.9%	1.3%
Aug 2026	60.3%	14.7%	8.1%	6.8%	8.1%	2%	0.17%
Sep 2026	62.5%	15.3%	8.4%	7.6%	3.7%	2.4%	0.12%

How has the OpenAI speech-to-text API and Speechmatics comparison changed over the last 12 months?

3 findings

Speechmatics was ahead of OpenAI speech-to-text API in every measured month of the 12 months ending September 2026.
Across the 12 months ending September 2026, OpenAI speech-to-text API’s share of searches among speech to text APIs worldwide moved from 0.17% to 0.12%, and its estimated monthly branded searches moved from 210 to 140.
Across the 12 months ending September 2026, Speechmatics’ share of searches among speech to text APIs worldwide moved from 12.1% to 8.4%, and its estimated monthly branded searches moved from 14.8K to 9.9K.

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

2 changes

In September 2026, Speechmatics rose from 4th to 3rd among speech to text APIs worldwide.
Estimated monthly branded searches for OpenAI speech-to-text API worldwide fell 33.3% over 12 measured months, from 210 to 140 in September 2026.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using OpenAI speech-to-text API’s and Speechmatics’ 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.