LIVE VOICE INFRASTRUCTURE

Voice agents that
don't sound like
robots.

Build, test, and deploy human-grade phone agents in minutes. Sub-second latency, deterministic flows, and observability on every single call.

SUB-SECOND LATENCY·MULTILINGUAL·{{VARIABLE}}-DRIVEN
A
Ava · Healthcare Intake
+1 (415) 555-0182
LIVE 00:42
AVA
Hi, this is Ava from Cedar Valley Clinic. Am I speaking with Daniel?
CALLER
Yeah, this is Daniel.
AVA
Great — you're confirmed for Thursday at 2:30 with Dr. Liang. Anything else?
CALLER
That's perfect, thank you!
420ms·Claude Haiku 4.5·EN-USbook_appointment ✓
BUILT ON A PRODUCTION-GRADE STACK
Deepgram Nova-3Anthropic ClaudeCartesia SonicTelnyxPipecatSilero VADSimliPostgresDeepgram Nova-3Anthropic ClaudeCartesia SonicTelnyxPipecatSilero VADSimliPostgres
THE PLATFORM →

One platform from
first word to
production scale.

Keep scrolling — the story moves sideways. Speech, reasoning, and observability, each built to feel alive.

SCROLL
01 — REAL-TIME SPEECH

Speaks like
a person.

Natural turn-taking, graceful barge-in, and back-channels. Every word streamed through Deepgram, Claude, and Cartesia at sub-second latency.

<500ms
P50 TARGET
11
VOICES
B
Barbershop Man · Warm
en-US · Cartesia Sonic-2
02 — REASONING & FLOWS

Thinks in
flows.

Branching logic, live tool calls, and memory route every conversation to the right outcome — booking, transferring, escalating.

TOOL CALLSROUTINGMEMORY
DRAG THE NODES ✦
03 — OBSERVABILITY

Sees every
call.

Synced transcripts, latency waterfalls, sentiment, and tool timelines — down to the millisecond, on every call.

LATENCY WATERFALL
Speech-to-text · Deepgram210 ms
LLM reasoning · Claude380 ms
Text-to-speech · Cartesia120 ms
Network90 ms
SCROLL TO EXPLORE
SEE IT HAPPEN

Two ways to build. One console.

Write one prompt, or wire a full conversation flow with branching, tools, and transfers — the exact screens from the Vox console.

Cedar Valley IntakeSingle promptCreate & Publish
MODEL
Claude Haiku 4.5 · Fast
LANGUAGE
English
VOICE
Barbershop Man
SYSTEM PROMPT
You are Ava, the friendly intake assistant for Cedar Valley Clinic. Greet the caller warmly, confirm you are speaking with {{candidate_name}}, then verify their date of birth before discussing any appointment. Keep replies to one or two sentences. If they ask for a human, call the transfer_to_agent tool.
WELCOME MESSAGE · AI SPEAKS FIRST
Hi {{candidate_name}}, thanks for taking the call — this is Ava from Cedar Valley.
SettingsTest
Response tuning
Call settings
Webhook
Dynamic variables
Advanced
Cedar Valley Intakev3
DevStagingProd
Publish
Search nodes…
CORE
Conversation
End Call
LOGIC
Decision
ACTIONS
Function
Transfer
YesNo
Start
START
Greet caller
CONVERSATION
Hi {{candidate_name}}…
Verified?
DECISION
YesNo
Get appointment
FUNCTION
get_appointment
Wrap up
END CALL
Transfer
TRANSFER
+1 (415) 555-0199
Latency 512 ms · TTFT 280 ms · Turn 3
Verified?
PromptVoiceAdvanced
CONDITION
{{is_verified}} == true
6 NODE TYPES · TAP A TAB TO EXPLORE EACH BUILDER
0
EXPRESSIVE VOICES
0
SPOKEN LANGUAGES
<0ms
P50 LATENCY TARGET
0
CONSOLE SCREENS
A VOICE FOR EVERY MOMENT

Eleven voices. English & Hindi, native.

B
Barbershop Man
en-US · warm male
C
California Girl
en-US · upbeat female
B
British Lady
en-GB · polished female
F
Friendly Australian
en-AU · calm male
R
Riya
hi-IN · playful female
R
Rohan
hi-IN · corporate male
P
Parvati
hi-IN · support female
S
Salesman
en-US · confident male

Give your product
a voice today.

Spin up your first agent in the console in five minutes — single prompt or a full conversation flow.