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Vapi
Vapi is a developer platform for building, testing, and deploying conversational voice AI agents with low-latency infrastructure.
Vapi is a platform that enables developers to build, test, and deploy conversational voice AI agents. It handles the infrastructure, allowing users to configure voice, conversation flow, telephony, and integrations. The service includes built-in conversation guardrails to reduce model hallucinations and ensure data integrity. Users can monitor calls in real-time and access data to improve agent performance. The platform supports enterprise requirements such as SSO, OAuth, RBAC, and SOC 2, HIPAA, and PCI compliance.
Vapi at a glance
- Best for: Software engineer, Support
- Runs on: API
- Pricing: Usage-based with $0.05/min hosting fee; Success Packages include Core $29/month, Pro $999/month, and Premier custom pricing.
- Released: May 2024
- Category: AI audio tool
- Website: vapi.ai
Key features
- Real-time call monitoring and tracking
- Conversation guardrails for data integrity
- Enterprise-grade access controls and SSO
- Scalable infrastructure for high call volumes
- Configurable voice and telephony settings
- Testing and simulation tools for voice agents
Use it for
- Customer support automation
- Inbound call handling
- Voice-based business process automation
Alternatives to Vapi
- AssemblyAI — Industry-leading speech models deliver high accuracy and low latency for voice applications.
- Coval — Prove voice agent reliability through simulation and human-in-the-loop testing.
- VoiceGremlin — Validate AI voice agents with real phone calls and plain English test cases.
- Composio — Equips AI agents with tools, managed user auth, and sandboxes across 1,500+ apps
- PolyAI — Proprietary models built specifically for complex enterprise conversations.
- Pipecat — Builds real-time voice and multimodal agents with frame-level control.
- HAPI — Runs agents locally on your machine while letting you control them from mobile devices.
- Speech-to-Speech — Fully modular, swappable components with local or hosted execution options.
- Retell AI — It handles phone calls with low-latency responsiveness and high workflow accuracy.
- Eclatira — Connects voice and video AI agents to APIs and apps without custom integration code.
- ThunderPhone — Record-setting accuracy and lower prices starting at 2 cents per minute.
- NovaSynth — Tests voice agents on real calls and validates fixes automatically.
All Vapi alternatives