Voice AI API.
Sub-350ms.
Actually Natural.

Build voice agents that don't sound like robots. $0.12/min all-in. No hidden fees. HIPAA compliant for healthcare.

Built for developers who ship production voice apps.

HIPAA Ready
<350ms Latency
99.9% Uptime
Make a call in seconds
curl -X POST \
  https://customsolutions.ai/api/v1/agents \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "to": "+1234567890",
    "agent_id": "agent_abc123"
  }'
<350ms
Latency
$0.12
Per minute, all-in
99.9%
Uptime
HIPAA
Ready

Why developers choose us

Actually Fast

Sub-350ms response time. No awkward pauses. Conversations that flow naturally.

Simple Pricing

$0.12/min. Everything included - LLM, TTS, STT, telephony. No surprise fees.

Easy Integration

REST API, webhooks, WebSocket streaming. Your Twilio or ours. Ship in hours.

How it works

1

Create an agent

Define your prompt, voice, and tools.

2

Connect a number

Buy through us ($2/mo) or bring your Twilio.

3

Make calls

Outbound or inbound. We handle the rest.

4

Get webhooks

Real-time events, transcripts, recordings.

What developers are building

Healthcare

Patient scheduling, appointment reminders, after-hours triage. HIPAA compliant with BAAs available.

Legal

Client intake, appointment scheduling, after-hours answering. Capture leads when the phone rings at 8pm.

Insurance

Claims intake, policy questions, appointment booking. Handle high call volumes without hold times.

Small / Local Business

Restaurants, salons, auto shops. Answer every call, book every appointment. HVAC, plumbing, electricians. Capture emergency calls 24/7.

Enterprise-ready from day one

HIPAA Compliant

Business Associate Agreements (BAAs) available. PHI handled according to HIPAA requirements. Agreements in place with vendors.

Data Privacy

Your data stays yours. No training on your calls, GDPR-friendly architecture.

Trusted infrastructure: Built on Microsoft Azure · 256-bit encryption · 99.9% uptime SLA

Built for builders

BYOT

Your Twilio

  • Bring your own Twilio account
  • Point webhook to our API
  • You control the numbers
  • Best for existing infrastructure
QUICK START

Our Twilio

  • We provision numbers instantly
  • $2/mo per number
  • No Twilio account needed
  • Best for getting started fast

Code Examples

Create Agent
curl -X POST https://customsolutions.ai/api/v1/agents \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Support Agent",
    "voice": "nova",
    "prompt": "You are a helpful support agent..."
  }'

Simple, transparent pricing

Pay as you go
$0.12/min
  • All-in pricing (LLM + TTS + STT + telephony)
  • No monthly minimums
  • No hidden fees
  • Volume discounts available
Start Building

Compare

FeatureUsCompetitors
Latency<350ms400-800ms
Pricing$0.12 all-in$0.05 + fees = $0.20+
HIPAAOften not or Enterprise only
Setup timeMinutesHours/days

Frequently asked questions