The AI agency USA teams can test before they hire

An AI agency designs, builds and runs AI systems inside a company’s own operations, rather than selling one piece of software off the shelf. The work usually falls into three areas. Voice agents place and answer phone calls, qualify the caller and book the appointment. Workflow automation moves data between the tools a business already uses and triggers the next step without anyone retyping it. Custom AI agents read a situation, decide what to do next and carry that decision across several systems. A good agency also owns the unglamorous parts: connecting to your CRM and calendar safely, deciding where the AI hands over to a person, testing against real calls before launch, and documenting the build so your team can run it. Evolvv AI is an AI agency in the USA, based in Brooklyn, New York, that does all of this. Our published work includes OraFacePass, Flowstate, Knock and Quantum, a multi-agent system for a development finance broker in Australia.

Yes. Evolvv AI is a US company headquartered in Brooklyn, New York, and we also work from St. Petersburg, Florida. You can reach us on +1 914 369 5427 or at info@evolvvai.com, and our leadership team is named on our homepage. We state it plainly because it is a fair question, and because the answer should be checkable rather than asserted. Being in the market matters for two practical reasons. Time-zone overlap means you get a person on a call during your business hours instead of waiting overnight for a reply. And outbound calling practice, customer-data handling and CRM integrations all carry US-specific operational considerations that are easier to get right from inside the market. Our case studies, our stack and eight live voice agents are all published on evolvvai.com, so you can check rather than take our word.

The two terms overlap, and plenty of agencies use both. Strictly, an AI automation agency is about connecting business tools so data moves and actions trigger without a person in the middle, usually on a workflow platform such as n8n. An AI agency is the broader term. It also covers voice agents that hold real phone conversations, custom AI agents that make decisions rather than follow a fixed script, and AI-powered software products. The distinction matters when you choose a vendor. If your problem is that leads sit in an inbox and nobody routes them, an automation specialist may be all you need. If you want an AI that answers the phone, qualifies the caller, books the meeting and writes it into your CRM, you need voice, automation and integration work in one team. Evolvv AI does all of it. Our AI automation agency page covers workflow work in depth, and AI agent development covers agents.

It depends on what you need built. Four things drive the build cost. How many systems you need, and whether they have to coordinate with each other. How many tools have to be connected, and whether those tools have clean APIs. Whether voice is involved, since live telephony carries its own infrastructure. And how much data enrichment the workflow needs. Then there is a second cost that behaves differently, which is the running cost. Voice platforms and language models are billed by usage, so the monthly bill scales with call volume rather than with features. A simple agent making thousands of calls a day can cost more to run than a complicated one making fifty. Budget for both. We work through that arithmetic for your own volumes on a 30-minute call, so the number you get fits your case.

We do not quote a standard timeline up front, because it depends on your systems as much as ours. A single voice agent wired into one CRM is a much smaller job than a multi-agent pipeline that touches several data sources, a scoring step and an outreach sequence. Three things set the pace. Access: how quickly we receive credentials and a test environment for your CRM, calendar and phone system, since nothing can be wired in until those exist. Decision clarity: rules a person applies by instinct today have to be written down before an AI can apply them consistently. And testing: anything that touches real customers runs in staging or shadow mode against real calls, documents or leads before go-live, and we do not compress that step. Small voice agent work and automation wiring tend to move quickly. You get a realistic timeline on the scoping call, once we know what we are building.

Yes. Eight AI voice agents are live on the Evolvv AI homepage: Issac, appointment setter; Noah, customer support; Ethan, sales closer; John, onboarding guide; Olivia, lead qualifier; Sarah, survey agent; Emma, retention specialist; and Leo, receptionist. Click one and talk to it in your browser. There is no form, no download and no sales call first. Each call is started from our own server rather than a third-party demo widget, and runs on Retell, the voice platform we use in client work, so what you hear is our build. We put them in the open on purpose. Voice is the hardest part of AI work to judge from a description, because what matters is how the agent handles an interruption, a silence, an unclear answer and a question nobody scripted. Start with the agent closest to your use case. For automation and multi-agent work, our case studies show what we built and who we built it for.

Yes, anywhere in the United States. We deliver remotely from Brooklyn, New York and St. Petersburg, Florida, which is normal for this kind of engineering work, and we do not keep offices in other cities. What matters for a voice or automation build is time-zone overlap for the working sessions, a shared calendar for testing, and a handover that leaves your team able to run the system. Eastern, Central, Mountain and Pacific all overlap with our working day for at least four hours. Our pages for Austin, Boston, Chicago, Santa Clara, San Francisco and Los Angeles, and a page for each of the 50 states, explain how we work with businesses there. If you need someone physically in the room on a regular basis, we will tell you plainly that we are not the right fit rather than take the work and disappoint you.

Mainly Claude for reasoning and scoring, Retell for voice, n8n for workflow orchestration, HubSpot as the CRM layer, and Clay, Apify and Phantombuster for data enrichment and outreach. We have also connected voice agents to Twilio, Airtable, Calendly and Slack in delivered work, and built retrieval assistants on LangChain. Each tool has one job. Claude makes the judgement calls, reading a lead, a document or a transcript and deciding what it means. Retell runs the real-time speech loop, where a pause in the wrong place is enough to make a call sound broken. n8n holds the workflow together and makes failures visible instead of silent. HubSpot is where the result lands, because an AI that decides something and writes it nowhere is useless. We pick the stack to fit the job rather than forcing every client onto one platform, and we integrate into the tools you already run rather than asking you to migrate.