Voice AI

Voice Agents That Sound Human

Real-time voice conversations powered by OpenAI Realtime and Twilio. Create voice agents for calls, web apps, or anywhere you need spoken AI.

Voice AI Capabilities

Build natural, low-latency voice experiences with powerful features out of the box.

Real-Time Speech

Sub-second latency for natural conversations. Voice-to-voice interactions without awkward delays.

Twilio Integration

Connect to phone networks. Handle incoming calls, make outbound calls, and build voice IVRs.

Browser WebSocket

Embed voice AI directly in web apps. No phone required, works in any modern browser.

Multi-Turn Conversations

Context-aware dialogue. Agents remember the conversation and respond naturally.

Custom Voices

Choose from multiple AI voices or use voice cloning for brand consistency.

Governance Controls

Apply content filtering to voice conversations. Automatic PII detection and compliance.

Two Integration Modes

Choose the integration that fits your use case: phone calls via Twilio, or browser-based voice with WebSockets.

  • Receive inbound calls to your Twilio number
  • Make outbound calls programmatically
  • Stream audio via Twilio Media Streams
  • Works with any phone network globally
  • Direct WebSocket connection from the browser
  • Real-time audio streaming with OpenAI Realtime
  • No phone required, works anywhere
  • Embed in web apps, kiosks, or products

What Can You Build?

AI Call Center: handle customer calls 24/7 with intelligent voice agents that answer questions, route calls, and create tickets. Automatic call routing, knowledge base integration, ticket creation, and human escalation.

Voice Assistants: build custom voice assistants for products, kiosks, or internal tools with natural conversation flow. Custom wake words, multi-turn dialogue, API integrations, and branded voices.

Automated Outreach: make outbound calls for appointment reminders, surveys, and customer follow-ups. Scheduled calling, response tracking, CRM integration, and call analytics.

Voice IVR: replace touch-tone menus with natural language voice navigation. Intent recognition, dynamic routing, multi-language support, and analytics.

Technical Architecture

Voice input from a browser microphone or phone call streams through a WebSocket or Twilio into OpenAI Realtime (GPT-4o Voice), where agent tools call your APIs and actions. The response is synthesized back to the speaker or phone with natural intonation in real time.

  • User voice input from browser microphone or phone call
  • Audio stream over WebSocket or Twilio Media Streams
  • OpenAI Realtime GPT-4o Voice reasoning
  • Agent tools that call your APIs and actions

Voice AI by the Numbers

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Speech Latency
0+
Languages
0/7
Call Coverage
0
Integration Modes

Frequently Asked Questions

How does the voice agent connect to phone calls?

Through Twilio. Voice agents receive inbound calls to your Twilio number, make outbound calls programmatically, and stream audio via Twilio Media Streams. It works with any phone network globally, so you can run call centers and phone-based IVRs.

Can I use voice AI without a phone number?

Yes. The browser WebSocket mode connects directly from the browser with real-time audio streaming over OpenAI Realtime. No phone is required, so you can embed voice AI in web apps, kiosks, or products that run in any modern browser.

How low is the latency?

Sub-second. Voice-to-voice interactions happen without awkward delays, so conversations feel natural. Agents are context-aware across multiple turns, remembering the conversation and responding accordingly.

Can I customize the voice?

Yes. Choose from multiple AI voices or use voice cloning for brand consistency. Custom voices keep your assistant on-brand across calls, web apps, and kiosks.

Is voice AI governed and compliant?

Voice conversations run through the same governance layer as the rest of the platform, including content filtering and automatic PII detection, so spoken interactions stay compliant.

Ready to Add Voice to Your Product?

Build AI voice agents in minutes. Connect Twilio for phone calls or use browser voice for web apps.