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What telecom operators use for Speech & voice APIs

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

15

Telecommunications companies use Speech & voice APIs tools

5 confirmed 1 declared 9 observed

The most used: Deepgram (8), AssemblyAI (6), and Cartesia (1).Data as of Nov 5, 2026

Ranking

Tools ranked by the Telecommunications 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 13 of 15.

  • Deutsche TelekomObserved10,001+ employeesChecked Nov 5, 2026
  • ZoomConfirmed5,001–10,000 employeesChecked Nov 5, 2026
  • NiceObserved5,001–10,000 employeesChecked Nov 5, 2026

Strongest proof

Confirmed or declared: 6 of 15. This view filters what you read, never what is counted.

  • MaxContactConfirmed51–200 employeesChecked Nov 5, 2026
  • TelnyxConfirmed201–1,000 employeesChecked Nov 5, 2026
  • VoximplantConfirmed201–1,000 employeesChecked Nov 5, 2026

Who uses each tool

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

  1. 1Deepgram8 companies · Checked Nov 5, 20268
    4 confirmed 1 declared 3 observed

    Deepgram profile

  2. 2AssemblyAI6 companies · Checked Nov 5, 20266
    1 confirmed 5 observed

    AssemblyAI profile

  3. 3Cartesia1 company · Checked Oct 25, 20261
    0 confirmed 1 declared 0 observed

    Cartesia profile

  4. 4LiveKit1 company · Checked Nov 5, 20261
    0 confirmed 1 observed

    LiveKit profile

How usedby counts

5 confirmed 1 declared 9 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.

No software vendor had to be left out.

Data as of November 5, 2026.

Questions

Which Speech & voice APIs tools do Telecommunications companies use most?

Deepgram leads: 8 of the 15 Telecommunications companies on usedby that use Speech & voice APIs tools use it. Next: AssemblyAI (6), Cartesia (1), and LiveKit (1). See Deepgram.

How many Telecommunications companies use Speech & voice APIs tools?

15 Telecommunications companies on usedby use at least one of 4 Speech & voice APIs tools. It counts the companies usedby tracks.

What proof backs these lines?

Of the 15 companies, each counted at its strongest proof: 5 confirmed, 1 declared, 9 observed and 0 known from a job post.

How does usedby build this ranking?

usedby counts each Telecommunications 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. Every line shows its proof and the date usedby last checked it.