Top 30 of 70 · updated 2026-10-29

Best Voice AI agencies in the US (2026)

70 agencies in our directory are based in the US and name Voice AI work on their own websites: AI phone and voice agents (Vapi, Retell, ElevenLabs and similar). 4 are listed in an official partner directory and 22 publish pricing. Besides Voice AI, they most often build with Claude, OpenAI, HubSpot, and the work they describe most is Voice agents, Data integration/ETL, Appointment booking. Below are the top 30, ordered by Cofounderbase Score (median 45).

Ranked by evidence

Automation Consulting Services · score 95 · New York: official partner listing, published case studies, deep tool stack.
Connex Digital · score 89 · Universal City: official partner listing, published case studies, deep tool stack.
Streamline Agency · score 74 · New York: published case studies, deep tool stack, transparent pricing and team.
n8n Lab · score 70 · Newark: published case studies, deep tool stack.
Master of Code Global · score 69 · Redwood City: published case studies, deep tool stack, active in 2026.

#	Agency	Location	Builds with	Services they list	Score
1	Automation Consulting Services Partner	New York, United States	n8n, Zapier, OpenAI	Sales automation · Operations automation	95
2	Connex Digital Partner	Universal City, United States	n8n, Make, Zapier	Customer Support	89
3	Streamline Agency	New York, United States	n8n, Power Automate, Voiceflow	CRM automation/sync · Chatbots	74
4	n8n Lab	Newark, United States	n8n, Retell AI, Vapi	RevOps Agent · Content Creation	70
5	Master of Code Global	Redwood City, United States	OpenAI, Claude, HubSpot	Custom AI Development · AI Agents	69
6	Appinventiv	New York, United States	LangChain, OpenAI, Claude	Strategic Technology Consulting · Digital Product Development & Engineering	68
7	ITECS.AI	Dallas, United States	Make, Zapier, Power Automate	Personal agents on every desktop · Enterprise agents in your systems	68
8	JPLoft	Denver, United States	OpenAI, Claude, Salesforce	AI & Automation · Agentic AI	68
9	PxlPeak	Olive Branch, United States	n8n, Make, Zapier	AI Speed-to-Lead · AI Chatbots & Voice Agents	68
10	Designswheel	Tampa, United States	n8n, Make, Zapier	AI Automation · AI Agents	67
11	Xevaro Labs	Denver, United States	n8n, Zapier, OpenAI	75 AI agents. 25 industries. · Audit	66
12	FactoryJet	United States	n8n, LangChain, OpenAI	Ecommerce Development Services · Ecommerce Development	65
13	SuperDupr	Austin, United States	n8n, Vapi, OpenAI	AI Voice Agents & Receptionists · AI Customer Support Agents	65
14	Agentum AI	Los Angeles, United States	n8n, Zapier, Power Automate	Lead systems · Voice agents	64
15	Azumo	San Francisco, United States	n8n, LangChain, OpenAI	AI Development Services · AI Agents	64
16	CloudNSite	Atlanta, United States	Zapier, OpenAI, Claude	Custom AI Implementation · Custom AI Agents	64
17	Esipick	United States	n8n, Claude, ElevenLabs	Automate with AI	59
18	Northwest AI	Portland, United States	n8n, Make, LangChain	AI Training →	58
19	AI Saige	Dearborn Heights, United States	n8n, Zapier, Voiceflow	Speed to Lead · Backend Automation	57
20	ZTABS LLC	Houston, United States	n8n, Zapier, LangChain	AI-First Software Development Company · AI & Software Development Services	57
21	Cynoteck Technology Solutions Pvt. Ltd.	Dehradun, United States	LangChain, Claude, Salesforce	Artificial Intelligence and Data Analytics · Agentic AI	56
22	Automize	United States	n8n, Zapier, GoHighLevel	Go High Level Consulting · CRM Migration	55
23	Lurto	Sheridan, United States	n8n, Zapier, OpenAI	Regulatory document drafting agent · A receptionist answering real calls	55
24	Echelon Advising	Los Angeles, United States	n8n, Zapier, GoHighLevel	Automate the first department.	54
25	Plavno	Alexandria, United States	UiPath, OpenAI, Claude	AI-First Software Development Company · Financial AI Agent	54
26	Chatbot Boy AI	Houston, United States	n8n, Zapier, Retell AI	Core Automation Services · AI Voice Agents	53
27	Hashlogics	East Islip, United States	Zapier, OpenAI, Claude	Who leads Hashlogics	52
28	Talos Automation	Houston, United States	n8n, Zapier, Airtable	AI Voice Agents · CRM Automation	52
29	NineTwoThree	Boston, United States	OpenAI, Claude, HubSpot	AI Strategy & Consulting · AI Agents & Automation	51
30	Humming Agent	Denver, United States	OpenAI, Claude	Custom AI Voice	50

How we built this list

We started from every verified agency in the Cofounderbase directory, kept the ones based in the US whose own website names Voice AI work, and ordered them by Cofounderbase Score. The score combines tool stack depth, published evidence such as case studies and reviews, official partner listings, transparency and freshness, all from public sources. Rank is never sold. Read the full method.

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Broader lists

Best AI automation agencies in United States (233)Best Voice AI agencies (241)

Other tool and country lists

n8n agencies in the UK (26) All lists

Questions

Which is the best Voice AI agency in the US?

By Cofounderbase Score, Automation Consulting Services ranks first (95/100), followed by Connex Digital (89) and Streamline Agency (74). The best fit still depends on your stack, budget and timeline.

How is this list ranked?

By Cofounderbase Score: stack depth, published evidence (case studies, outcomes, reviews), official certification, transparency and freshness, all taken from public sources. Rank is never sold. The Featured slot at the top is a labelled sponsored placement and is not part of the ranking.

How many Voice AI agencies are there in the US?

70 verified agencies as of 2026-10-29. 4 are official partners and 22 publish pricing.

Can I get help choosing?

Yes. Describe your project on the Matcher page and we suggest three agencies from the directory. It is free and needs no account.

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