Engineering
The Physics of Latency: Why 500ms is the Magic Threshold
Exploring the neurological reasons behind human conversation timing and how we engineered our edge network to match it.
MC
Marcus Chen
Head of Infrastructure
Build AI that
Sounds Human.
Build voice agents that answer the phone, qualify the caller, book the appointment, and know when to hand the call to a person.
Talk to NexaVoxa AIAI AgentContact Sales
Allow the mic, then talk.
Ship voice agents
you can prove.
Nothing reaches a customer that you have not heard yourself first, and nothing stays live without the transcript, the sentiment, and the cost of every call it takes.
One workspace to
run every phone line.
Agents, numbers, campaigns, and the record of every call your business takes or makes. Built for teams running thousands of calls a week, not one demo bot.
Agents
Build, configure, and test your voice agents.
Search+ Add New Agent
FFront Deskgpt-realtime-mini
LLead Qualifiergpt-5
AAppointment Deskgemini-2.5-flash
TTier-1 Supportgpt-4o-mini
DDispatch Coordinatorgemini-3.1-flash-lite
BBilling Recoverygpt-5-mini
AAfter Hours Linegpt-realtime
WWin-back Outreachgpt-5-nano
Front DeskPublished
VoiceAmaraElevenLabs
Speech to textnova-3Deepgram
Languagemulti30 available
Knowledge basebloom-dental-kb4 sources
Tools attached11 of 16Cal.com, Sheets, transfer
AI voice agents that
finish the calls they answer.
Every caller reaches an AI voice agent fluent in 100+ languages that books appointments, logs faults, and never takes a message.
Recovery
Handled on the first call, not escalated
Build this agent
AgentI've flagged that transaction and temporarily frozen your card. Should I issue a replacement?
Tap to play a sample call
MarkHey, there's a transaction on my card from a gas station in London that I didn't make.
Hey, there's a transaction on my card from a gas station in London that I didn't make.
I've flagged that transaction and temporarily frozen your card. Should I issue a replacement?
AI voice agents for Financial services, Retail and commerce, Travel and airlines
Bookings
Booked while the office is closed
Build this agent
AgentOf course. I see Dr. Miller has an opening at 9:00 AM or 10:30 AM. Which works best?
Tap to play a sample call
SarahI need to move my cardiology follow-up to next Thursday morning.
I need to move my cardiology follow-up to next Thursday morning.
Of course. I see Dr. Miller has an opening at 9:00 AM or 10:30 AM. Which works best?
AI voice agents for Healthcare, Hospitality, Automotive
Inquiries
Answered now, not on a callback
Build this agent
AgentSaturday is fully booked, but the agent is available at 11 AM on Sunday. Shall I lock that in?
Tap to play a sample call
DavidCan I see the penthouse at 402 Park Avenue this Saturday?
Can I see the penthouse at 402 Park Avenue this Saturday?
Saturday is fully booked, but the agent is available at 11 AM on Sunday. Shall I lock that in?
AI voice agents for Real estate, Education, Insurance
Surge
No hold queue when volume spikes
Build this agent
AgentYour shipment is at the regional hub in Newark. It's on schedule for delivery by 3 PM today.
Tap to play a sample call
LinWhere is my shipment of medical supplies currently located?
Where is my shipment of medical supplies currently located?
Your shipment is at the regional hub in Newark. It's on schedule for delivery by 3 PM today.
AI voice agents for Logistics, Field services
Paperwork
Documents sent before the call ends
Build this agent
AgentI've emailed the full benefits packet to you. I can also schedule your first interview now.
Tap to play a sample call
RiyaWhere can I find the benefits overview for the Senior Engineer role?
Where can I find the benefits overview for the Senior Engineer role?
I've emailed the full benefits packet to you. I can also schedule your first interview now.
AI voice agents for HR and recruiting, Legal and compliance, Accounts
Integrations
Plugs into
anything
Native integrations for the tools below, and a REST API plus webhooks for everything else.
Start building
Enterprise-ready
at any scale.
Enterprise infrastructureUptime SLA
Contractual uptime and performance guarantees at 99.95%, with reserved capacity sized to your volume.
Dedicated Deployment Support
A dedicated engineer embedded in your team to get you live in a week, not a quarter.
Scalable Infrastructure
Scale to millions of calls a month with a 194ms median response time on the realtime path.
Secure Data Mesh
Continuous audit monitoring, PII redaction at the edge, and tenant isolation for data residency.
Hybrid Deployment
Run in your own VPC or managed-local when privacy rules will not allow anything else.
Certified and Audited
HIPAA, ISO and PCI aligned, with the evidence your security review will ask for.
Engineering Clarity
Technical
Deep Dive.
Unpacking the deterministic infrastructure powering high-fidelity vocal orchestration.
Architectural questions?
NexaVoxa acts as an orchestration layer that connects via standard SIP Trunks or WebRTC. We can peer directly with your carrier or CCaaS provider (like Twilio, Genesys, or AWS Connect), allowing you to route specific numbers to NexaVoxa nodes while maintaining your existing telephony infrastructure.
Architectural Context
Supports SIP over TLS and SRTP for encrypted media transport.
Yes. While our default is a managed multi-tenant edge, enterprise customers can deploy NexaVoxa nodes within their own VPC (AWS, GCP, or Azure). This ensures that audio processing and LLM inference remain within your organization's security perimeter.
The platform provides strict isolation between Sandbox and Production environments. Changes to agent prompts, knowledge bases, or logic are tested in a Sandbox node with separate API keys and telemetry before being promoted to a high-availability Production cluster.
Initial logic and integration mapping usually take 2-4 weeks. Full production rollout depends on telephony peering and internal compliance reviews, but most enterprises reach full scale within 60 to 90 days following a successful pilot phase.
We utilize a distributed Edge-Voice-Bridge (EVB) architecture. By locating orchestration nodes in 14 global regions, we ensure that audio is processed at the nearest point-of-presence to the caller, minimizing physical transit latency and packet loss.
Pricing Plan
Get started
with NexaVoxa.
No seat fees and no monthly minimum. You are billed by the minute, you can see the cost of every call, and the first $1.00 is on us.
Pay as you go
Start today, no contract, cancel any time.
What a minute costs
Swap any provider to see the price change.
Language model
$0.0053
Speech to text
$0.0200
Voice
$0.0540
Your cost per minute
$0.0793/min
Plus a flat $0.004 platform fee per call, charged once however long the call runs.
Customers
Answering calls
on four continents.
Teams running busy phone lines in markets where missing a call costs the most.
Ankobra
OyelaranPartners
Tegemea
Kibaha
kigezi
Rugende
nyathi
Choma
terginet
Ulduzlu
Norlur
Tirek
Intel & Insights
Engineering
the future.
Product Design
Beyond Commands: Designing for Natural Voice Flow
Moving from robotic 'intent-matching' to fluid, context-aware dialogue that builds genuine user trust.
SJ
Sarah Jenkins
Lead Voice Designer
Security
Data Sovereignty in the Era of Global LLM Orchestration
How enterprises can leverage frontier models while maintaining strict regional data residency and PII redaction.
DV
David Volek
Chief Security Officer
Stay ahead of the curve.
A monthly read on what is actually changing in voice infrastructure. No product news, no filler.
The Foundation of Neural Orchestration
OPENAI
Reasoning
CLAUDE
Intuition
GEMINI
Cognitive
ELEVENLABS
Synthesis
OPENROUTER
Routing
CLOUDFLARE
Edge Ops
LIVEKIT
RTC Mesh
DEEPGRAM
Ingestion
SENTRY
Stability
GROQ
LPU Speed
AZURE AI
Foundry
G-WORKSPACE
Context
TWILIO
Transport
CARTESIA
Sonic Core
LANGFUSE
Observability
Native Cloud Sync
Certified Compliance
PII Redaction
Automatic on every call
Encrypted at Rest
Recordings & credentials
Tenant Isolation
Covered by dedicated tests
Talk to us
Hear it before
your customers do.
Send us one call your team takes every day. We build that agent, you listen to the recording, and nothing goes near a customer until you say so.
We do the building
- 01One call is the whole briefNo spec, no discovery deck, no meeting series. Just a call your team fields every day.
- 02We build it, not youOur engineer wires the flow, the knowledge base and the number. Your team touches nothing.
- 03Hear it, then decideThe recording word for word, the cost of the minute beside it. Say no and nothing ships.
Pricing
By the minute
To start
$1.00 in credits