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Speech & voice APIs tools used by Technology & Connectivity companies

Each line links its public proof and the date usedby last checked it.

92

Technology & Connectivity companies use Speech & voice APIs tools

47 confirmed 45 observed

The most used: AssemblyAI (28), Cartesia (27), and Deepgram (27).Data as of Oct 25, 2026

Ranking

Tools ranked by the Technology & Connectivity companies that use them. Ties go to the stronger proof.

Largest and best-proven users

Two labelled views of the same companies. Neither is a score.

Largest companies

By employee range. Size known for 46 of 92.

  • ServiceNowConfirmed10,001+ employeesChecked Oct 24, 2026
  • Deutsche TelekomObserved10,001+ employeesChecked Oct 25, 2026
  • NvidiaObserved10,001+ employeesChecked Oct 25, 2026

Strongest proof

Confirmed or declared: 47 of 92. This view filters what you read, never what is counted.

  • Retell AIConfirmedChecked Oct 25, 2026
  • CreovaiConfirmedChecked Oct 25, 2026
  • Five9Confirmed1,001–5,000 employeesChecked Oct 25, 2026

Who uses each tool

Strongest proof first. A job post is a signal, the weakest proof.

  1. 1AssemblyAI28 companies · Checked Oct 21, 202628
    10 confirmed 18 observed

    AssemblyAI profile

    Show 18 more companies
  2. 2Cartesia27 companies · Checked Oct 24, 202627
    21 confirmed 6 observed

    Cartesia profile

    Show 17 more companies
  3. 3Deepgram27 companies · Checked Oct 25, 202627
    11 confirmed 16 observed

    Deepgram profile

    Show 17 more companies
  4. 4LiveKit13 companies · Checked Oct 25, 202613
    0 confirmed 13 observed

    LiveKit profile

    Show 3 more companies
  5. 5Recall.ai11 companies · Checked Oct 24, 202611
    5 confirmed 6 observed

    Recall.ai profile

    Show 1 more company

How usedby counts

47 confirmed 45 observed

A company counts once per tool, at its strongest proof: confirmed (a case study, a named testimonial, a press release or the company's own account), declared (the company told usedby), observed (a vendor logo wall or customers page) or signal (a job post). Counts cover the companies on usedby, never the whole market.

1 company that sells software was left out, so a vendor is never counted as a user.

Data as of October 25, 2026.

Questions

Which Speech & voice APIs tools do Technology & Connectivity companies use most?

AssemblyAI leads: 28 of the 92 Technology & Connectivity companies on usedby that use Speech & voice APIs tools use it. Next: Cartesia (27), Deepgram (27), LiveKit (13), and Recall.ai (11). See AssemblyAI.

How many Technology & Connectivity companies use Speech & voice APIs tools?

92 Technology & Connectivity companies on usedby use at least one of 5 Speech & voice APIs tools. It counts the companies usedby tracks.

What proof backs these lines?

Of the 92 companies, each counted at its strongest proof: 47 confirmed, 0 declared, 45 observed and 0 known from a job post.

How does usedby build this ranking?

usedby counts each Technology & Connectivity company once per tool, from public proof: case studies, press releases, the company's own site or its declaration to usedby, vendor customer pages and job posts. 1 software vendor is left out. Every line shows its proof and the date usedby last checked it.

Speech & voice APIs by industry within Technology & Connectivity