Brandwave

How popular isOpenAI speech-to-text API?

In September 2026, people searched for OpenAI speech-to-text API by name about 140 times worldwide, a 33.3% decrease from the previous year. These searches made up 0.12% of all global speech to text API searches, placing OpenAI speech-to-text API seventh out of seven APIs. When we asked both ChatGPT and Google AI Overviews about speech to text APIs, OpenAI speech-to-text API appeared in three of the five answers and was the most recommended of the seven.

Search and AI answers in September 2026

OpenAI speech-to-text API is the seventh most searched of 7 competitors and the most recommended in AI answers.

  1. DeepgramShare of searches 62.5%Mentioned in 3 of 5 AI answersPlace in AI recommendations 2nd
  2. AssemblyAIShare of searches 15.3%Mentioned in 4 of 5 AI answersPlace in AI recommendations 3rd
  3. SpeechmaticsShare of searches 8.4%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  4. Rev AIShare of searches 7.6%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  5. OpenAI speech-to-text APIShare of searches 0.12%Mentioned in 3 of 5 AI answersPlace in AI recommendations 1st

+2 more

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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. OpenAI speech-to-text API is the most recommended of the seven.

Most recommended by AI

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

  1. OpenAI speech-to-text API1st
  2. Deepgram2nd
  3. AssemblyAI3rd
  4. Google Cloud Speech-to-Text4th
  5. Amazon Transcribe5th
  6. Speechmatics–
  7. Rev AI–

Mentioned by AI

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

  • AssemblyAI4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Google Cloud Speech-to-Text4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Deepgram3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • OpenAI speech-to-text API3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Amazon Transcribe1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Speechmatics0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Rev AI0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about speech to text 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 21, 2026.

Which speech to text APIs compete with OpenAI speech-to-text API?

OpenAI speech-to-text API against speech to text APIs worldwide, by month

Share of searches by month for Deepgram, AssemblyAI, Speechmatics, Rev AI, Google Cloud Speech-to-Text, Amazon Transcribe, OpenAI speech-to-text API. The figures are in the table below the chart.

View monthly share of searches table
MonthDeepgramAssemblyAISpeechmaticsRev AIGoogle Cloud Speech-to-TextAmazon TranscribeOpenAI speech-to-text API
Oct 202549.5%14.8%12.1%9%9.9%4.4%0.17%
Nov 202546.6%17.1%11.4%11.3%9.3%4.1%0.13%
Dec 202556.7%13.9%9.3%8.3%7.6%4.1%0.13%
Jan 202654.3%16.3%8.9%9.9%7.3%3.2%0.13%
Feb 202653.5%16%8.7%7.8%10.7%3.2%0.15%
Mar 202656.2%16.8%7.5%7.4%9.2%2.7%0.13%
Apr 202655.3%16.6%7.4%7.3%11.1%2.2%0.13%
May 202658.1%17.4%7.8%6.3%7.8%2.3%0.31%
Jun 202660.7%14.9%8.1%6.6%6.6%2.4%0.72%
Jul 202659.7%14.6%8%6.5%8%1.9%1.3%
Aug 202660.3%14.7%8.1%6.8%8.1%2%0.17%
Sep 202662.5%15.3%8.4%7.6%3.7%2.4%0.12%
  1. 1.Deepgram

    62.5%

    Held 1st. 74K estimated branded searches, 0% vs prior month. Share +2.2 points.

  2. 2.AssemblyAI

    15.3%

    Held 2nd. 18.1K estimated branded searches, 0% vs prior month. Share +0.5 points.

  3. Moved from 4th to 3rd. 9.9K estimated branded searches, 0% vs prior month. Share +0.3 points.

  4. 4.Rev AI

    7.6%

    Moved from 5th to 4th. 9K estimated branded searches, +8.4% vs prior month. Share +0.8 points.

  5. Moved from 3rd to 5th. 4.4K estimated branded searches, -55.6% vs prior month. Share -4.3 points.

  6. Held 6th. 2.9K estimated branded searches, +20.8% vs prior month. Share +0.5 points.

  7. Held 7th. 140 estimated branded searches, -33.3% vs prior month. Share -0.1 points.

Compare popularity between OpenAI speech-to-text API and its closest rivals

Every comparison with OpenAI speech-to-text API

6 comparisons

How has branded search demand for OpenAI speech-to-text API changed worldwide over the last 12 months?

2 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for OpenAI speech-to-text API worldwide fell from 210 to 140.
  • Across the 12 months ending September 2026, OpenAI speech-to-text API’s share of searches among speech to text APIs worldwide peaked at 1.3% in July 2026 and was lowest at 0.12% in September 2026.

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

6 changes
  1. In September 2026, Rev AI overtook Google Cloud Speech-to-Text to rank 4th among speech to text APIs worldwide, with 7.6% of the searches.

  2. In September 2026, Deepgram gained share of searches among speech to text APIs worldwide, from 60.3% to 62.5%.

  3. In September 2026, AssemblyAI gained share of searches among speech to text APIs worldwide, from 14.7% to 15.3%.

  4. In September 2026, Google Cloud Speech-to-Text lost share of searches among speech to text APIs worldwide, from 8.1% to 3.7%.

  5. In September 2026, Speechmatics rose from 4th to 3rd among speech to text APIs worldwide.

  6. Estimated monthly branded searches for Amazon Transcribe worldwide fell 46.3% over 12 measured months, from 5.4K to 2.9K in September 2026.

How are OpenAI speech-to-text API’s branded searches counted?

1 search term

Brandwave collects information about searches that people make online using OpenAI speech-to-text API’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.

  • openai speech to text api

How the Brand Demand Index is measured

Who owns OpenAI speech-to-text API?

OpenAI speech-to-text API is owned by OpenAI. Brandwave also tracks OpenAI, owned by the same company, worldwide.

Do you work for OpenAI speech-to-text API? To request corrections or removal please contact us via our support page and we will be happy to assist.

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Is OpenAI speech-to-text API your brand?

Put your own campaigns, spend and outcomes next to this demand line, so you can see which of your marketing lined up with the movements above.