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Zero Runtime architecture: users connect through integrations to the fully managed real-time voice pipeline (denoise, VAD, STT, turn detection, LLM/realtime model, TTS), driven by your agent code in the Python, Go, or JavaScript SDK.
Zero Runtime (ZRT) lets you build real-time voice AI agents in Python, JavaScript, or Go. You write the agent code; we run the entire voice infrastructure including speech-to-text, LLM processing, text-to-speech, turn detection, noise cancellation, scaling, and GPUs. Your code runs in your process, while all real-time voice handling runs on ours.
Think serverless for voice AI: you build the agent, we run the runtime.

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Build

Python

Build voice agents with the Python SDK.

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Integration

Connect your agents with communication channels and client applications.

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Communication

Telephony

Handle inbound and outbound voice calls.

WhatsApp

Engage users through WhatsApp messaging.

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Client SDKs

JavaScript

Add voice capabilities to web apps.

React

Build voice-enabled React experiences.

React Native

Integrate voice features into mobile apps.

iOS

Add voice experiences to iOS apps.

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Observe

Monitor, analyze, and troubleshoot agent interactions and performance.

Tracing

Track agent execution step by step.

Metrics

Measure usage, performance, and outcomes.

Logs

Review detailed agent activity records.

Recording

Access and review conversation recordings.

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Deploy

Take your agent from local development to production on Zero Runtime.

Overview

Understand how Zero Runtime deploys and scales your agents.

Deploy an Agent

Ship your agent to production step by step.

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Use Cases

Explore production-ready examples and reference implementations to accelerate development.

Medical Triage

Nurse-line agent that assesses symptoms and hands off to a specialist.

Lead Qualification

SaaS inbound SDR agent that qualifies leads BANT-style, scores, and routes them.

Appointment Scheduling

Clinic receptionist that books, reschedules, cancels, and sends reminders.

Customer Support

E-commerce agent that resolves FAQs, looks up orders, and files tickets.

Drive-Through Ordering

Fast-food order taker tuned for low-latency, barge-in-friendly turn-taking.

Debt Collection

Compliance-first payment reminder agent that verifies identity and honors stop-contact.

Cold Call Outreach

Outbound subscription-renewal call with retention offers and re-engagement.

Support Chatbot

Text and voice helpdesk that shares one conversation over room pub/sub.

Language Tutor

Realtime speech-to-speech Spanish tutor that corrects mistakes and adapts to the learner.

Multilingual Support

Detects the user’s language automatically and provides support in their preferred language.

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Need Help?

Community

Join the community and connect with other developers.

GitHub

Ask questions, report issues, and contribute feedback.

Talk to an Expert

Book a demo, contact support, or speak with our sales team.