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AI Voice Agents

AI voice agents answer calls, qualify leads, book appointments, and handle FAQs — 24/7, at the cost of a fraction of a human rep. We design, build, and deploy production voice agents for insurance, lead gen, and customer support.

Nub Labs is a custom AI voice agent development agency. We design, build, and deploy AI voice agents that make and answer phone calls autonomously - qualifying leads, booking appointments, and handling inbound and outbound calls 24/7. We build on Vapi, Retell AI, Twilio, Deepgram, and ElevenLabs, and stay platform-agnostic so we can pick the best fit for your latency, cost, and integration needs. Every agent is built around your scripts, telephony stack, and CRM, with call transcripts, real-time lead routing, and instant human handoff when a call needs a person. Projects typically range from $2,500 for a single agent to $20,000+ for multi-workflow deployments, quoted fixed-price after a 30-minute scoping call. Insurance agencies and lead generation businesses use our voice agents to reach leads in seconds instead of hours and lift contact and conversion rates without adding headcount.

What we build

Deliverables

  • Inbound voice agents for lead qualification and FAQs
  • Outbound calling agents for follow-ups and appointment booking
  • Voice agents integrated with your CRM and calendar
  • Custom voices via ElevenLabs and Cartesia
  • Call recording, transcription, and analytics pipelines
  • Human handoff flows for complex or high-value calls

Who this is for

Ideal clients

Insurance agencies, lead gen companies, and customer support teams that need to handle high call volumes without proportionally scaling headcount.

FAQ

Common questions

How much does it cost to build a custom AI voice agent?

Most custom AI voice agent projects range from about $2,500 for a single inbound or outbound agent to $20,000+ for multi-workflow deployments with CRM integration, call routing, and custom knowledge bases. Nub Labs gives a fixed-price quote after a 30-minute scoping call, plus per-minute platform costs (typically $0.05-$0.20/min).

Which voice AI platform do you build on - Vapi, Retell, or Bland?

We are platform-agnostic and choose based on latency, cost, and integration needs. We build on Vapi, Retell AI, Twilio, Deepgram, and ElevenLabs, and recommend the best fit during scoping rather than locking you into one vendor.

How long does it take to launch an AI voice agent?

A focused first agent typically goes live in 1-2 weeks. More complex multi-workflow deployments with CRM integration and call routing usually take 3-6 weeks, delivered in weekly milestones.

Can an AI voice agent qualify insurance and sales leads?

Yes. Our voice agents call new leads in seconds, ask qualifying questions, score and route them in real time, and book appointments directly into your calendar - common for insurance agencies and lead generation businesses.

Do you integrate the voice agent with our CRM?

Yes. We integrate with HubSpot, Salesforce, and custom CRMs, pushing call transcripts, outcomes, and structured lead data automatically so every call becomes a ready-to-action record.

Technologies

VapiRetell AIElevenLabsCartesiaDeepgramOpenAI RealtimeTwilioPython

Industries we serve

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Book a free 30-minute call and let’s see if we’re the right fit for your project.

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