Vapi
VerifiedAI voice agent platform for developers
Voice Agents
7.5 /10
Freemium Released
2023
Country
United States
API
Available
Self-Host
No
Last Reviewed
2025-06
About Vapi
Vapi provides a developer-first API for building AI voice agents. It handles the complex orchestration of speech-to-text, LLM inference, and text-to-speech to create natural-sounding voice conversations. Developers can configure custom voices, prompts, tools, and workflows for phone calls, customer support, and conversational AI applications.
Features
Voice agent API
Custom voices
Tool calling
Phone integration
Function calling
Real-time metrics
Detailed Ratings
Ease of Use 7.0
Value for Money 7.0
Features 8.0
Support 7.0
Performance 8.0
Overall Rating
7.5 /10
Pros & Cons
Pros
- Developer-first API
- Low latency
- Custom tool integration
- Phone number support
Cons
- Requires technical integration
- Per-minute pricing
- Newer platform
Use Cases
AI phone agentsCustomer support automationAppointment schedulingLead qualification calls
Who Is It For?
Developers building AI voice agents who need a low-latency, API-first platform with phone integration and tool calling
#voice-agents#conversational-ai#telephony#developer-api
Pricing Plans
Free
Free
- 100 minutes/month
- Basic voices
- 1 phone number
- Community support
Recommended
Pro
$0.05/min
- Unlimited minutes
- Premium voices
- Custom tool calling
- Phone numbers
- Priority support
Enterprise
Custom
- Volume discounts
- Custom SLA
- Dedicated support
- SSO
- On-premise option
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