Company lists · Data refreshed October 2026

Top 25 AI speech synthesis software companies based in the United States

RevenueBase identified 52 company matches for AI speech synthesis software companies associated with the United States as of October 2026 and tracks 1,601 professional contacts across them, including 734 with verified work emails. San Francisco is the largest hub.

This list covers company matches for AI speech synthesis software companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 20, 2026 How this list was built
52Companies
1,601Contacts tracked
734Verified emails
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The 25 largest AI speech synthesis software companies based in the United States

Ranked by team size
Top 25 of 52 company matches for AI speech synthesis software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, United StatesHQ recorded Oct 20, 2026n/a647 contacts →

Exact match

“Research Lab.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
2Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202651-200144 contacts →

Exact match

“At Murf AI, we believe voice will always be humanity’s most natural interface and we empower builders and creators to unlock the full potential of AI voice.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202651-200111 contacts →

Exact match

“AssemblyAI is the best way to build Voice AI apps.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
4Exact matchMountain View, CA, United StatesHQ recorded Oct 20, 202651-200100 contacts →

Exact match

“Inworld AI is a realtime AI research lab and model provider, providing Voice AI built for realtime conversation that feels as human as it sounds.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202651-20088 contacts →

Exact match

“Smallest.ai is an AI research lab pioneering the future of compact, powerful models.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
6Exact matchMclean, VA, United StatesHQ recorded Oct 20, 202651-20087 contacts →

Exact match

“AppTek.ai is a global leader in artificial intelligence (AI) and machine learning (ML) technologies for automatic speech recognition (ASR), neural machine translation (NMT)…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, United StatesHQ recorded Oct 20, 202611-5072 contacts →

Exact match

“CAMB.AI is the world’s most advanced AI speech synthesis and translation company.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
8Exact matchSeattle, WA, United StatesHQ recorded Oct 20, 202651-20063 contacts →

Exact match

“WellSaid is the AI voiceover platform built for professional audio production.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
9Exact matchSan Mateo, CA, United StatesHQ recorded Oct 20, 202611-5032 contacts →

Exact match

“CoeFont is an AI voice platform built to make cross-lingual communication effortless.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
10Exact matchTyngsboro, MA, United StatesHQ recorded Oct 20, 202611-5022 contacts →

Exact match

“Cobalt is reshaping the way businesses and individuals approach speech and language barriers by bridging the gap and providing state-of-the-art speech technologies.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
11Exact matchMenlo Park, CA, United StatesHQ recorded Oct 20, 202611-5022 contacts →

Exact match

“Promptu Systems Corporation is at the tipping point of a mobile revolution fueled by Voice User Interface (VUI) applications - the most intuitive and natural way to interact with…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
12Exact matchPalo Alto, CA, United StatesHQ recorded Oct 20, 202611-5021 contacts →

Exact match

“Scale your voice generation with PlayAI's Text to Speech models that can clone and generate speech with hyper-realism across any language, accent and dialect.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
13Exact matchWellesley Hills, MA, United StatesHQ recorded Oct 20, 202611-5013 contacts →

Exact match

“Kurzweil Technologies, Inc,(KTI) a software development company, develops and markets technologies in pattern recognition, artificial intelligence, evolutionary algorithms, signal…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
14Exact matchFort Lauderdale, FL, United StatesHQ recorded Oct 20, 20261-1013 contacts →

Exact match

“Entranet has designed the easiest smart home system ever!”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 20261-1010 contacts →

Exact match

“Reliable Voice AI”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
16Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202651-2009 contacts →

Exact match

“Established in 2020 by a team of pioneering AI research engineers, our innovative company is revolutionizing the way people communicate through the power of artificial…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, United StatesHQ recorded Oct 20, 20261-106 contacts →

Exact match

“We believe AI expands expressive potential.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
18Exact matchOrlando, FL, United StatesHQ recorded Oct 20, 20261-105 contacts →

Exact match

“Verbyx creates, develops and licenses Automatic Speech Recognition (ASR) technologies and support services.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
19Exact matchRemote, United StatesHQ recorded Oct 20, 202651-2005 contacts →

Exact match

“Speechify is a text-to-speech app that makes it easy for the world to access information.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
20Exact matchOrlando, FL, United StatesHQ recorded Oct 20, 202611-505 contacts →

Exact match

“O custo real do seu contact center não aparece no P&L.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
21Exact matchSanta Cruz, CA, United StatesHQ recorded Oct 20, 202611-505 contacts →

Exact match

“SapientX makes white-label software to add voice and intelligence to technology products.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
22Exact matchChattanooga, TN, United StatesHQ recorded Oct 20, 20261-104 contacts →

Exact match

“At Worbler AI, we have half a decade's worth of experience building voice models that are fast and reflective of a wide range of voice styles.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
23Exact matchLos Angeles, CA, United StatesHQ recorded Oct 20, 20261-104 contacts →

Exact match

“Dialogger provides the highest quality AI voices.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“As musicians and computer scientists, we spend our days tinkering and exploring sound.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
25Exact matchBellevue, WA, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“Neon AI is a trade name of Neongecko.com, Inc.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase

Showing 25 of 52 AI speech synthesis software companies based in the United States

See the full list, filter by size, metro and specialty, and access 734 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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AI speech synthesis software companies based in the United States at a glance

As of Oct 20, 2026
45.8%Verified-email coverage
30.8Average contacts per company
1-10Median size (employees)
13.5%Largest-city concentration · San Francisco
Oct 20, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
16
51-200
9

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 52 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “AI speech synthesis software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 734 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “AI speech synthesis software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many AI speech synthesis software companies are there based in the United States?

RevenueBase identified 52 company matches for AI speech synthesis software companies associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Elevenlabs tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most AI speech synthesis software companies?

San Francisco leads with 7 company records, followed by New York (4) and San Jose (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 734 professional contacts with verified work emails tracked across these 52 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.