Service
AI voice agents that answer, book, and follow up 24/7
KeenCraft designs and ships production AI voice agents for inbound and outbound calling: appointment booking, follow-up, and LLM-driven conversation design. It is the same architecture KeenCraft has led development on across live voice platforms like VoiceCake, Rawk.ai, and Dynaris, including latency work that cut response time from about 900ms to 320ms on Rawk.ai.
Inbound and outbound voice agents that answer calls, book appointments, and follow up 24/7, without a call center.
AI Voice Agents & Conversational AI
Production-tested voice AI architecture covering call handling, scheduling, follow-up, and LLM-driven conversation design. This isn't a demo bot. It is the same architecture KeenCraft has led development on across live voice platforms like VoiceCake, Rawk.ai, and Dynaris. VoiceCake serves dental, healthcare, fitness, and mortgage clients around the clock.
Engagements are fixed-price. Typical ranges are broken down in what an AI voice agent actually costs in 2026. What missed calls are worth is the missed-call revenue calculator. Agencies comparing resale margin with owning the platform can use the agency voice AI margin calculator.
Best fit for
Businesses losing revenue to missed calls, slow follow-up, or the cost of round-the-clock staffing.
What's included
- Inbound & outbound voice agents (Vapi, Retell AI, Twilio, Deepgram, ElevenLabs)
- LLM-powered conversational flows (LangChain, LangGraph) tuned for your business
- Latency & infrastructure tuning, proven to cut response time nearly 3x (900ms to 320ms on Rawk.ai)
- Front-desk automation across voice, chat, and email, with MCP-isolated agent tools (as built for Dynaris)
How an engagement is scoped
KeenCraft prices this work as a fixed Statement of Work. The scope, the milestones, and the total are written down before build starts. A stage is tested before that milestone is treated as done. Work that shows up later is scoped and priced on its own, not folded into the original invoice. A written proposal usually lands in 2 to 5 business days after a strategy call, and the timeline is agreed before any code is written.
A service page is the boundary of the work, not a bundle of everything the studio can do. The proposal names which systems are in scope, which are not, and how you will know a milestone is finished. If the right first step is an audit of a system you already run, that is a valid scope. It does not have to be a full rebuild, and it does not have to include a voice agent if the problem is the database, the CRM, or the API.
Questions about this service
What is an AI voice agent, in practical terms?+
A production phone agent that answers or places calls, understands the caller, and completes work such as booking, routing, or follow-up, without a round-the-clock call center.
How much does a custom AI voice agent cost?+
A single-location inbound agent is typically $3,000 to $12,000, and a multi-location build with CRM integration is typically $12,000 to $30,000, as a fixed Statement of Work. Running it is usually about $0.07 to $0.15 per call minute. Typical ranges are broken down in what an AI voice agent actually costs in 2026. You get one written total after a free strategy call, before any code is written.
How long does a fixed-price voice-agent build take?+
A proposal typically lands in 2 to 5 business days. Build time then follows the SOW: a focused inbound agent can be weeks; multi-location or multi-channel systems are staged in QA-gated milestones.
Can KeenCraft build a voice agent for a dental or healthcare office?+
Yes. VoiceCake is a live 24/7 inbound voice AI platform serving dental, healthcare, fitness, and mortgage clients, including real appointments booked by an AI agent rather than a script. What a dental agent can book, and what it must transfer, is in AI receptionist for dental practices.
What stack do you use for voice AI?+
Vapi, Retell AI, Twilio, Deepgram, ElevenLabs, LangChain, and LangGraph, with latency and infrastructure tuning so calls feel human instead of robotic.
How is a voice-agent project priced?+
Fixed-price and milestone-gated, like every KeenCraft engagement. Scope, deliverables, and total cost are written down before build starts. Typical ranges are broken down in what an AI voice agent actually costs in 2026.
Other services
Custom Software & Full-Stack Development
Web apps, dashboards, backends, and APIs built on a production-grade stack, not a template.
Automation & CRM / API Integrations
Connect the tools you already use so work stops falling through the cracks between systems.
Data & Backend Architecture
Caching, pipelines, and analytics-ready infrastructure that stays fast and correct as you scale.
Further reading
- What an AI voice agent actually costs in 2026: per-minute costs, build prices, and when Vapi or Retell is cheaper than a custom build.
- White-label AI voice agents for agencies: resell a platform, build on Vapi or Retell, or own a multi-tenant platform.
- AI receptionist for dental practices: what it can book, what it hands to a person, and what it costs.
- How to choose an AI appointment booking agent: no-code tools, developer platforms, and custom builds compared.
- AI front desk for multi-location businesses: routing, calendars, and data isolation across sites.
- Missed-call revenue calculator: monthly revenue in unanswered calls, with industry presets.
- Agency voice AI margin calculator: resale margin, and when owning the platform beats reselling.
- AI receptionist cost comparison: custom build versus a SaaS plan and a live answering service.
Ready to build something that saves you money from day one?
Book a free 30-minute call. Tell me what you're trying to build or fix, and I'll tell you honestly whether KeenCraft is the right fit and what it would take.