Vapi

Vapi is a platform for building voice AI agents that can handle phone calls and automate voice workflows. It’s designed for developers who need configurable assistants, integrations, and the ability to scale to high call volumes.

What you can build

• Voice bots for inbound and outbound call automation
• Agents that book appointments, look up information, and fill out forms
• Customer support assistants that answer common questions
• Marketing and research calls for surveys and data collection

Key capabilities

• API integrations with third-party services and databases
• Conversation design: dialog setup and call scenarios
• Analytics to track performance and review call data
• Low-latency features such as GPU support, caching, and streaming audio
• Scalability up to 1 million concurrent calls
• SDK support for Web, iOS, Flutter, React Native, and Python

Languages, access, and pricing

Vapi supports 100+ languages (including English, Spanish, German, and Hindi). It’s available through a web interface in the browser and via SDKs.

• Pricing: $0.05 per minute of conversation
• Phone number: $2/month extra
• Enterprise plans available; trial availability depends on terms