--- title: "OpenAI speech-to-text API vs Speechmatics: Which is searched more?" description: "Is OpenAI speech-to-text API or Speechmatics more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Speech to text APIs set worldwide. 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." canonical: "https://gobrandwave.com/demand/global-en/compare/openai-speech-to-text-api-vs-speechmatics" publisher: "Brandwave" --- # OpenAI speech-to-text API vs Speechmatics: Which is searched more? Is OpenAI speech-to-text API or Speechmatics more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Speech to text APIs set worldwide. 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. ## Key facts - **Compared**: OpenAI speech-to-text API and Speechmatics - **Competitive set**: Speech to text APIs - **Market**: Global - **Month measured**: Sep 2026 - **OpenAI speech-to-text API Share of Search**: 0.12% - **Speechmatics Share of Search**: 8.4% ## Is OpenAI speech-to-text API or Speechmatics more popular in search? - 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%. - 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. ## Top speech to text APIs in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, OpenAI speech-to-text API was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Speechmatics did not appear in any of the five answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | OpenAI speech-to-text API | 1st | 3 of 3 | 0 of 2 | 3 of 5 | | Deepgram | 2nd | 3 of 3 | 0 of 2 | 3 of 5 | | AssemblyAI | 3rd | 3 of 3 | 1 of 2 | 4 of 5 | | Google Cloud Speech-to-Text | 4th | 3 of 3 | 1 of 2 | 4 of 5 | | Amazon Transcribe | 5th | 1 of 3 | 0 of 2 | 1 of 5 | | Speechmatics | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Rev AI | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about speech to text APIs - Asked ChatGPT "Which speech to text API should I use?": 1. OpenAI speech-to-text API, 2. Deepgram, 3. AssemblyAI, 4. Google Cloud Speech-to-Text - Asked ChatGPT "What are the best speech to text APIs?": 1. Deepgram, 2. OpenAI speech-to-text API, 3. AssemblyAI, 4. Google Cloud Speech-to-Text - Asked ChatGPT "What's the best speech to text API for an app workflow?": 1. OpenAI speech-to-text API, 2. Deepgram, 3. AssemblyAI, 4. Google Cloud Speech-to-Text, 5. Amazon Transcribe - Searched Google, AI Overview "speech to text api": 1. Google Cloud Speech-to-Text, 2. AssemblyAI - Searched Google, AI Overview "speech recognition api": named none of the brands we track Not named in any answer: Speechmatics and Rev AI. Brands are listed in the order each answer named them. The answers were collected in the United States on October 21, 2026. ## How did search popularity change for speech to text APIs worldwide in September 2026? - 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. ## Month by month | Month | OpenAI speech-to-text API estimated searches | OpenAI speech-to-text API Share of Search | OpenAI speech-to-text API rank | Speechmatics estimated searches | Speechmatics Share of Search | Speechmatics rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 210 | 0.17% | 7 | 14.8K | 12.1% | 3 | | Nov 2025 | 140 | 0.13% | 7 | 12.1K | 11.4% | 3 | | Dec 2025 | 140 | 0.13% | 7 | 9.9K | 9.3% | 3 | | Jan 2026 | 140 | 0.13% | 7 | 9.9K | 8.9% | 4 | | Feb 2026 | 170 | 0.15% | 7 | 9.9K | 8.7% | 4 | | Mar 2026 | 170 | 0.13% | 7 | 9.9K | 7.5% | 4 | | Apr 2026 | 170 | 0.13% | 7 | 9.9K | 7.4% | 4 | | May 2026 | 390 | 0.31% | 7 | 9.9K | 7.8% | 4 | | Jun 2026 | 880 | 0.72% | 7 | 9.9K | 8.1% | 3 | | Jul 2026 | 1.6K | 1.3% | 7 | 9.9K | 8% | 4 | | Aug 2026 | 210 | 0.17% | 7 | 9.9K | 8.1% | 4 | | Sep 2026 | 140 | 0.12% | 7 | 9.9K | 8.4% | 3 | ## How each brand is measured 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. - **OpenAI speech-to-text API**: Measured on the search term “openai speech to text api”. - **Speechmatics**: Measured on the search term “speechmatics”. - [OpenAI speech-to-text API profile](/demand/global-en/brands/openai-speech-to-text-api) - [Speechmatics profile](/demand/global-en/brands/speechmatics) - [All speech to text APIs worldwide](/demand/global-en/categories/speech-to-text-apis): The set both shares are measured inside, 7 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is OpenAI speech-to-text API or Speechmatics more popular in search? 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%. ## Cite this page Brandwave. "OpenAI speech-to-text API vs Speechmatics: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/openai-speech-to-text-api-vs-speechmatics This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/openai-speech-to-text-api-vs-speechmatics. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.