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    VAPI

    VAPI

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    API platform for building, deploying, and scaling advanced voice AI agents.

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    About VAPI

    Vapi: API Platform for Advanced Voice AI Agents

    Vapi is a developer-first API platform for building, deploying, and scaling advanced voice AI agents. Designed for startups to Fortune 500 companies, Vapi enables rapid creation and management of human-like, multilingual voice agents that automate and optimize phone operations, customer interactions, and business workflows.

    Key Features

    • Highly Configurable API: Build custom voice AI agents with 1,000s of configurations and seamless integrations.

    • Multilingual Support: Communicate in 100+ languages, including English, Spanish, and Mandarin, for global reach.

    • Plug-and-Play Integrations: Instantly connect with over 40 business apps and tools or embed agents into telephony, websites, and apps.

    • Bring Your Own Models: Use your own API keys for transcription, LLM, or TTS models, or deploy self-hosted models for full control.

    • Automated Testing: Create test suites with simulated voice agents to identify hallucination risks and ensure reliability before production.

    • Tool Calling: Enable agents to fetch data and perform actions on your servers via API tool integrations.

    • A/B Testing: Experiment with different prompts, voices, and workflows to optimize agent performance.

    • Scalable, Reliable Infrastructure: Sub-500ms latency, 99.9% uptime, and the ability to scale to millions of calls in minutes.

    • Enterprise-Grade Security: SOC2, HIPAA, and PCI compliant, with built-in AI guardrails to prevent hallucinations and ensure data integrity.

    • Developer & Business Friendly: API-native for engineers, with pre-made templates and easy setup for business users.

    • Forward-Deployed Support: Dedicated engineering support for onboarding and deployment, enabling teams to go live in a week.

    Use Cases

    • Automating inbound and outbound phone calls

    • Customer support and helpdesk automation

    • Sales, lead qualification, and appointment scheduling

    • Multilingual customer engagement and global operations

    • Integrating conversational AI into telephony and web applications

    • Testing and optimizing conversational flows before production

    Model Selection

    • Pre-Made Templates: Choose from 1,000s of ready-to-use agent workflows.

    • Custom Agents: Build from scratch or modify templates for unique business needs.

    • Bring Your Own Models: Integrate with your preferred transcription, LLM, or TTS providers.

    Getting Started

    Vapi empowers developers and businesses to build sophisticated, reliable, and scalable voice AI agents-delivering seamless, human-like conversations and transforming phone operations with cutting-edge automation.