Vapi review: Voice AI agent platform with a REST API, billed per minute after a $0 start
Voice AI agent platform with a REST API, billed per minute after a $0 start
Starts at $29/mo, free plan: yes, prices checked on October 29, 2026.
Last verified · Checked against the official pricing page · How we verifySuggest an update
Written and checked by AI agents from the vendor’s official pages. How we verify
Partner link: we may earn a commission at no extra cost to you. It never changes our order or verdicts. Affiliate disclosure
What Vapi does
Lets developers build, test and run voice AI agents that handle phone calls, using their own model or a managed one, with every capability exposed through a REST API.
Vapi is a platform for building voice AI agents, with tools for testing them and running them in production. The official site says every capability can be reached through a REST API, and it describes full API access for developers.
Agents can run on your own model or on one from a managed list of 200+ models and integrations. Telephony features include custom SIP, warm transfers, voicemail detection, phone number management and DTMF. Agents can pull in external data and trigger tools, including MCP. The platform page lists support for 100+ languages. For quality work it offers test suites aimed at hallucination risk, A/B experiments on prompts, voices and flows, and dashboards and exports. Multi-agent workflows use squads with handoffs, and model providers get automatic failover and latency balancing.
Pricing starts with a package called No Success Package. It costs $0 to start, then you pay by usage. It includes $5 free credits, pre-paid hosting at $0.05/min, 2 organizations, 1 included phone number, 4 concurrent calls and 14 days of raw data retention. Core is $29 / month, pre-paid and auto-renewing, with 5 included phone numbers, 10 concurrent calls and 30 days of retention. Pro is 10% of the Vapi hosting fee with a $999/mo minimum, and includes 10 organizations, 30 concurrent calls, 180 days of retention and a 99% uptime SLA. Premier is custom and sold through direct sales only. Extra concurrency and organizations can be added as add-ons at any package. No yearly prices are shown.
- Bring your own model or pick from 200+ models
- Custom SIP, warm transfers and voicemail detection
- Tool calling including MCP
- 100+ languages
- Test suites for hallucination risk
- A/B experiments on prompts, voices and flows
- Multi-agent squads with handoffs
- Automatic model failover
- Dashboards and exports
- REST API access
Good for / Not for
Good for
- Developers building voice agents who want API access to every capability
- Teams that need SIP, warm transfers, voicemail detection or DTMF in phone agents
- Teams that want to test agents and run A/B experiments on prompts, voices and flows before scaling
Not for
- Buyers who want a published yearly price or yearly discount, since none is shown
- Teams needing a 99% or 99.9% uptime SLA without moving to Pro or Premier
How to start
Begin on the No Success Package, which costs $0 to start and includes $5 free credits. source
Choose your own model or one from the managed list of 200+ models and integrations. source
Build through the REST API, then use test suites to check for hallucination risk before going to production. source
Move to Core at $29 / month if you need 10 concurrent calls and 30 days of raw data retention. source
Limits and gotchas
- The No Success Package allows 4 concurrent calls and 14 days of raw data retention. source
- Hosting on the No Success Package is pre-paid at $0.05/min. source
- Email support on the No Success Package has no SLA. source
- Extra concurrency and organizations are add-ons at any package. source
- Pro has a $999/mo minimum, and Premier is direct sales only. source
From the official site and docs of Vapi, checked on October 29, 2026.
Pros and cons
Pros
- Accepts your own model or a managed list of 200+ models and integrations
- Starts at $0 with $5 free credits, then charges by usage
- Telephony controls include custom SIP, warm transfers, voicemail detection and DTMF
- Test suites and A/B experiments help check and tune agents
- Every capability is reachable through a REST API
Cons
- The entry package allows only 4 concurrent calls and 14 days of raw data retention
- Email support on the entry package comes without an SLA
- Pro has a $999/mo minimum, and Premier has no published price
- Uptime SLAs (99% and 99.9%) only start at Pro and Premier
- No yearly billing prices are shown on the pricing page
Our take
Vapi fits developers and product teams who want to assemble a voice agent around their own choice of model and telephony setup, and who are happy to pay by the minute. The $0 start with $5 free credits lets you begin before committing to a paid package, though no trial period is stated. Support and limits are modest on the entry package: email support has no SLA, and it allows 4 concurrent calls and 14 days of raw data retention. Teams needing an uptime SLA must move to Pro (99%) or Premier (99.9%); Core adds a 2 business day response SLA. Pro carries a $999/mo minimum, and Premier has no published price. Pricing is shown only as monthly figures, with no yearly discount. Buyers who want a flat-priced, no-code product, or who do not plan to work with an API, may find it less fitting.
Comparisons and lists with Vapi
Coming soon
Coming soon — we are writing comparisons that include Vapi.
Vapi pricing
| Plan | Monthly billing | Annual billing (per month) | Limits / what’s included |
|---|---|---|---|
| No Success Package to start, then pay by usage | Free | — | Pre-paid, $0.05/min Vapi hosting; $5 free credits; 2 organizations; 1 included Vapi phone number; 4 concurrent calls; 14 days raw data retention |
| Core per month | $29 | — | Pre-paid, auto-renew; 2 organizations; 5 included Vapi phone numbers; 10 concurrent calls; 30 days raw data retention; 2 business day response SLA |
| Pro minimum per month (10% of Vapi hosting fee) | $999 | — | 10% of Vapi hosting fee, $999/mo minimum; 10 organizations; 10 included Vapi phone numbers; 30 concurrent calls; 180 days raw data retention; 99% uptime SLA |
| Premier custom, direct sales only | — | — | Custom number of Vapi phone numbers; 1 hour for P0 response SLA; 99.9% uptime SLA; Custom RBAC + ZDR + SSO; Dedicated SIP available |
Free trial: none listed. Free plan: yes.
Prices checked on on the official Vapi pricing page. “—” = not published.
All Vapi plans, limits and annual prices →
Frequently asked questions
Is there a free plan?
The No Success Package costs $0 to start and includes $5 free credits. After that you pay for the minutes you use, with hosting at $0.05/min. No separate trial period is stated.
How much does the Core package cost?
Core is $29 / month, pre-paid and auto-renewing. It includes 5 phone numbers, 10 concurrent calls, 30 days of raw data retention and a 2 business day response SLA.
How is Pro priced and what SLA does it have?
Pro is 10% of the Vapi hosting fee with a $999/mo minimum. It includes 10 organizations, 30 concurrent calls, 180 days of raw data retention and a 99% uptime SLA.
Can I use my own AI models?
Yes. The platform page says you can bring your own model or choose from a managed list of 200+ models and integrations.
Is there an API?
Yes. The platform page says every capability is accessible via REST API.
Recently verified in Automation & AI Agents
Forethought Verified Nov 2, 2026
Hippocratic AI Verified Nov 2, 2026
Inngest Verified Nov 2, 2026
Kolo AI Verified Nov 2, 2026
Mercury Verified Nov 2, 2026
MindStudio Verified Nov 2, 2026
Add an AGIPicks badge to your site
The badge shows Vapi’s verification status on AGIPicks and links to this page. Light/dark and compact versions: badges.
Suggest an update
Wrong price, outdated fact or a tool that shut down? Are you the vendor and disagree with this page? Tell us, ideally with a link to the official page. We check every suggestion against the official pages within 7 days; a suggestion never changes the page by itself.