AI Voice Agent Development
An AI voice agent is software that answers and makes phone calls in a natural, human-sounding voice - qualifying leads, booking appointments, and handling support without a human on the line. AutoNex Solution builds production voice agents on Vapi, Bland, Retell, and ElevenLabs, integrated with your CRM and calendar, with the sub-second latency that makes a call feel real.
What is an AI voice agent, and which platform is right?
An AI voice agent combines three layers: speech-to-text to hear the caller, a large language model to decide what to say and do, and text-to-speech to reply in a natural voice - all stitched together with telephony and your business systems. The platform choice matters: Vapi is the flexible, provider-agnostic orchestrator for custom builds; Bland is built for high-volume outbound campaigns; Retell excels at structured, compliance-heavy enterprise flows; ElevenLabs leads on voice quality and latency. We've shipped and migrated voice agents across these (including a Bland-to-Vapi migration) and pick the stack that fits your call volume, budget, and compliance needs - not a one-size default.
What an AI voice agent can handle for you
Calls that used to need a person - answered instantly, every time.
Inbound reception
Answer every call in seconds, route or resolve it, and book straight into your calendar - no missed leads, no hold music.
Outbound campaigns
Qualify leads, confirm appointments, and follow up at scale, with every outcome logged to your CRM.
Support & triage
Resolve common requests, capture details, and escalate the genuinely hard calls to a human with full context.
How we build your voice agent
From script to a live phone number, senior-led throughout.
Scope & call design
Map the call flows, success metric, and the systems the agent will touch - calendar, CRM, knowledge base.
Build the agent
Choose the platform, engineer the prompt and tools, and wire telephony, calendar, and CRM integrations.
Tune voice & latency
Select the voice, cut response latency, and add interruption handling so the call feels human.
Test & go live
Adversarial call testing, then deploy to a live number with call recording and analytics.
Scope & call design
Map the call flows, success metric, and the systems the agent will touch - calendar, CRM, knowledge base.
Build the agent
Choose the platform, engineer the prompt and tools, and wire telephony, calendar, and CRM integrations.
Tune voice & latency
Select the voice, cut response latency, and add interruption handling so the call feels human.
Test & go live
Adversarial call testing, then deploy to a live number with call recording and analytics.
The voice AI stack we build on
Everything, delivered and owned by you.
No lock-in, no hostage code. On delivery you get the full source, deployed in your cloud, with a 30-day post-launch window of free iteration.
Start your project- Production voice agent on a live phone number
- Inbound and/or outbound call handling
- Calendar + CRM + knowledge-base integration
- Natural voice with sub-second latency
- Call recording, transcripts & analytics
- Full ownership of prompts, code & accounts
Related work we've shipped
Instapass Chatbot
An intelligent chatbot for ticketing platform with affiliate integration.
SastaGPT
From-scratch Transformer implementation for large language modeling.
Pixara AI
Sophisticated AI platform converting text prompts into fully edited videos.
AI Voice Agent Development FAQs
No - modern text-to-speech (ElevenLabs, Deepgram, OpenAI Realtime) is near-indistinguishable from a human, and we tune latency and interruption handling so the agent responds in under a second and lets callers interrupt naturally. Most callers can't tell.