Company lists · Data refreshed November 2026

Top 13 Voice interface design agencies based in the United States

RevenueBase identified 47 company matches for voice interface design agencies associated with the United States as of November 2026 and tracks 376 professional contacts across them, including 30 with verified work emails. San Francisco is the largest hub.

This list covers company matches for voice interface design agencies 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 November 6, 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 Nov 6, 2026 How this list was built
47Companies
376Contacts tracked
30Verified emails
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The 13 largest voice interface design agencies based in the United States

Ranked by team size
Top 13 of 47 company matches for voice interface design agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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, NY, United StatesHQ recorded Nov 6, 202611-50118 contacts →

Exact match

“RAIN is a pioneer in voice and conversational AI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMenlo Park, CA, United StatesHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCulver City, CA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“imperson is the leading conversational AI platform and full service creative studio for the development of premium enterprise chatbots.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“With Gyst, enterprises eliminate IVR guesswork and design voice experiences customers actually want to use.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“We are a group of passionate voice innovators and customer experience professionals who strongly believe in diversity, agility and equality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWaltham, MA, United StatesHQ recorded Nov 6, 202651-2005 contacts →

Exact match

“Boston UX specializes in intuitive interface design for touch- and voice-powered connected and embedded devices and related applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSanta Cruz, CA, United StatesHQ recorded Nov 6, 202611-503 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchNorwell, MA, United StatesHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Diagenix is an innovative voice application company with over 25 years of industry expertise and knowledge in providing packaged & custom voice applications, standards-based…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 20261-102 contacts →

Exact match

“We Made Media LLC is a "voice-first" creative consultancy that helps our clients conceptualize, create, and launch audio products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPrinceton, NJ, United StatesHQ recorded Nov 6, 202651-2001 contacts →

Exact match

“At xReach.io, we believe that engaging voice conversations can help improve outcomes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Diego, United StatesHQ recorded Nov 6, 202611-501 contacts →

Exact match

“Bots Inc is a boutique consultancy specializing in conversational design and intelligent automation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHerndon, VA, United StatesHQ recorded Nov 6, 20261-101 contacts →

Exact match

“We are a social enterprise, passionate and focused on building natural, human-machine conversational voice interfaces for your business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 20261-101 contacts →

Exact match

“We are a Design & Engineering Studio to help underdogs punch above their weight.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 13 of 47 voice interface design agencies based in the United States

See the full list, filter by size, metro and specialty, and access 30 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Voice interface design agencies based in the United States at a glance

As of Nov 6, 2026
8.0%Verified-email coverage
8.0Average contacts per company
11-50Median size (employees)
8.5%Largest-city concentration · San Francisco
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
21
51-200
4

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 47 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 “voice interface design agencies” 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 30 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 November 6, 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 “voice interface design agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voice interface design agencies are there based in the United States?

RevenueBase identified 47 company matches for voice interface design agencies associated with the United States as of November 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?

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

Which city has the most voice interface design agencies?

San Francisco leads with 4 company records, followed by New York (3) and Belmont (2).

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 30 professional contacts with verified work emails tracked across these 47 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 November 6, 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.