Vapi
API-first platform for building voice AI agents that handle support, lead qualification, and appointment booking at scale
Pricing
Free & Paid
Platforms
Web, API, Voice
Developer
Vapi Labs, Inc.
Rating
4.6 / 5.0
Last Updated
August 30, 2026
Overview
Vapi is a developer platform purpose-built for voice AI agents: you define the agent, its voice, and its conversation flow, and Vapi handles the telephony, model orchestration, and monitoring infrastructure in between.
It is one of the most widely deployed voice agent platforms in marketing and support — the company reports over one billion calls supported, more than 2.5 million agents launched, and roughly 750,000 developers on the platform, with enterprise customers including Ring, Intuit, ServiceTitan, New York Life, and Kavak.
Ring, for example, went from zero to production in two weeks and now runs 100% of its inbound support volume through Vapi while keeping CSAT scores up, and Kavak attributes 5x revenue growth and 250,000 monthly calls to its Vapi-powered service transformation.
For marketers, the practical value is a phone channel that behaves like software: agents qualify inbound leads, book appointments, answer pre-purchase questions, and run outbound campaigns, with real-time monitoring on every call.
Vapi is API-first, so the sweet spot is teams with some engineering support, but the dashboard also includes a visual agent builder, and pricing is transparent usage-based pricing: $0.05 per call minute, $0.005 per SMS or chat message, and model costs passed through at cost (free if you bring your own API keys).
It is a strong fit for growth teams that already run conversational channels and want to add a scalable phone layer without building telephony infrastructure themselves.
Use Cases
Qualifying inbound leads with AI phone conversations before routing to sales
Booking appointments and demos automatically from inbound and outbound calls
Resolving customer support questions over the phone 24/7 without hold times
Running outbound follow-up and reminder calls for campaigns and renewals
Adding SMS and chat follow-up to the same agent build for omnichannel coverage
Who Is This For
Growth and marketing teams that want a scalable phone channel for lead capture
Developers and product teams building custom voice agents into their own products
Support organizations looking to automate high-volume, repetitive calls
Agencies deploying white-label voice agents for multiple clients
Teams using CRMs like HubSpot or Salesforce that want call data synced back
Key Features
Voice Agent Studio
Build and test agents through a visual dashboard or fully via API — configure voice, conversation flow, telephony, and integrations in minutes.
Telephony & Multi-Channel
One agent build deploys across phone, SMS, chat, and WhatsApp, with telephony, SIP, and messaging handled by the platform.
AI Guardrails & Compliance
Built-in conversation guardrails prevent hallucinations and protect data integrity, with SOC 2, HIPAA, and PCI compliance for regulated industries.
Real-Time Monitoring
Live call monitoring, orchestration, and analytics show what works across every call so teams can continuously improve agent performance.
Model Flexibility
Choose your own STT, LLM, and TTS providers per agent — or bring your own API keys so model costs drop to zero.
Pros & Cons
Pros
- Proven at massive scale: 1B+ calls supported, 2.5M+ agents launched, and enterprise clients including Ring, Intuit, and ServiceTitan
- Transparent usage-based pricing: $0.05 per call minute with model costs passed through at cost
- API-first with a visual dashboard — build custom voice agents without owning telephony infrastructure
- Enterprise-ready: SOC 2, HIPAA, PCI, SSO/OAuth/RBAC, sub-500ms latency, and support SLAs
- One agent build deploys across phone, SMS, chat, and WhatsApp channels
Cons
- Usage-based pricing needs monitoring — heavy inbound volume can add up quickly
- Voice agent quality depends on careful prompt and flow design, so expect iteration time
- Best suited to teams with at least some technical support; no-code teams may prefer managed voice agents
Pricing Plans
Usage
Pay-as-you-go voice minutes with free included minutes to get started.
- 60+ free call minutes included
- $0.05 per call minute
- $0.005 per SMS or chat message
- 10 call lines included ($10 per line per month after)
- Model costs at cost — $0 with your own API keys
Scale
Annual contract with committed volume for high-call teams.
- Volume-based per-minute pricing
- Custom concurrency and reserved capacity
- Support SLA and dedicated deployment engineer
- HIPAA add-on at $2,000 per month
- Zero Data Retention add-on at $1,000 per month
Add-ons
Optional compliance and data controls for regulated industries.
- Zero Data Retention at $1,000 per month
- HIPAA compliance at $2,000 per month
- Custom voices and model access
- SMS and chat channels
Frequently Asked Questions
Editorial Review
Editorial Team
August 30, 2026
Vapi is the most mature voice agent API we have reviewed. The usage-based pricing at $0.05 per minute with model costs at cost is refreshingly transparent, and the enterprise track record — Ring running 100% of inbound volume on it — is hard to argue with. For growth teams that treat the phone as a conversion channel, this is the infrastructure layer worth building on.
Editorial Team
August 30, 2026
The trade-off is that you get infrastructure, not a finished product: agent quality depends on your prompts, flows, and data, so plan for iteration and monitoring. Budget forecasting also needs care because costs scale with call volume. Teams without engineering support should look at managed voice agents first.
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