Vapi alternatives

Vapi is a voice AI platform. Its pages describe it this way: A developer-focused platform for building voice agents from modular parts, where the customer chooses the transcriber, language model and voice and Vapi orchestrates the call. Reviewed October 10, 2026.

Last verified October 10, 2026.

We make Calldesk, so it appears below as one of the options, and we say so. Options are listed alphabetically, not ranked.

Who Vapi suits

We file Vapi under voice AI platforms, where you build and run agents yourself, and it bills by usage. The audience its pages name is developers and technical teams who want fine-grained control over every component of the voice pipeline and are comfortable assembling and costing the providers themselves.

What Vapi does well

Strengths Vapi's own pages describe, each linked to its source:

  • Highly modular pipeline: customers can pick or bring their own transcriber, model and voice, including a custom LLM endpoint, and mix providers freely. (source: docs.vapi.ai)
  • Provider models are passed through at cost with no markup, and the pricing page lists no agent cap on every plan, which keeps costs transparent for teams that want to tune each component. (source: vapi.ai)
  • Mature developer tooling: a full API for assistants, tools, phone numbers and files, assistant versioning with traffic splitting, and testing/simulation included on every plan. (source: docs.vapi.ai)
  • Flexible telephony: free Vapi numbers, plus import of Twilio, Telnyx and other SIP trunk numbers. (source: docs.vapi.ai)
  • States HIPAA support (with a BAA), SOC 2 Type II and GDPR compliance in its FAQ and publishes a trust portal. (source: docs.vapi.ai)

How Vapi prices

On a platform that bills by usage, check what the headline rate covers. Vapi describes its model as: Usage-based: a per-minute Vapi hosting fee plus provider costs passed through at cost, with optional monthly Success Packages for support and capacity.

What the published figure says: $0.05 per minute Vapi hosting fee, plus transcriber, model, voice and telephony costs billed separately; the vendor's own calculator shows roughly $0.08 to $0.13 per minute in total for 1,000 minutes with default providers. Read the per-minute figure as the number the page shows, not as a total for a finished call.

  • Usage option: no monthly fee, 4 concurrent calls, 2 organizations, 1 included Vapi phone number, 14 days raw data retention. (source: vapi.ai)
  • Core: $29 per month, 10 concurrent calls, 5 included phone numbers, 30 days retention, 2 business day email support response SLA. (source: vapi.ai)
  • Pro: 10% of the Vapi hosting fee with a $999 per month minimum, 30 concurrent calls, 10 organizations, 180 days retention, dedicated Slack support, 99% uptime SLA. (source: vapi.ai)
  • Premier: contact sales, custom limits, 99.9% uptime SLA, SSO and dedicated SIP available. (source: vapi.ai)
  • The per-minute figure on the page is the hosting fee; it is not an all-in call price. (source: vapi.ai)
  • Vapi docs state Success Packages are currently available to new customers; existing customers keep legacy pricing. (source: vapi.ai)

Billed separately or extra on Vapi, which matters when you total a month:

  • Transcriber (example on page: Deepgram about $0.0095 to $0.0099 per minute) (source: vapi.ai)
  • Language model (example on page: OpenAI about $0.0077 to $0.0452 per minute) (source: vapi.ai)
  • Voice (example on page: ElevenLabs about $0.0146 to $0.0238 per minute) (source: vapi.ai)
  • Telephony transport: Vapi telephony/SIP, WebSockets and Daily WebRTC listed as free; Twilio $0.008 inbound / $0.014 outbound per minute; Vonage $0.00814; Telnyx $0.0055 per minute (charged by the provider) (source: vapi.ai)
  • HIPAA add-on: $2,000 per month (source: vapi.ai)
  • Additional concurrent call lines: $10 per line per month (source: vapi.ai)
  • Additional organizations: $20 per organization per month (source: vapi.ai)

Trying it first: $5 in free credits on the Usage option; one free Vapi phone number can be created without a payment method.

Limits to know about Vapi

Described on Vapi's own pages; whether they matter depends on your calls.

  • Free Vapi phone numbers use US area codes and support inbound calls; international or outbound numbers come from importing a provider number. (source: docs.vapi.ai)
  • HIPAA mode is a paid add-on ($2,000 per month per the pricing page) and the EU region is available on the Premier package. (source: docs.vapi.ai)
  • The Usage option includes no response or uptime service-level agreement; an SLA starts with the paid Core package. (source: docs.vapi.ai)

Integrations and telephony at Vapi

Vapi's pages name these connections: Twilio, Telnyx, Vonage, DIDWW and other SIP trunk providers, Deepgram (transcriber), OpenAI (model), ElevenLabs (voice, including custom/cloned voices), Custom LLM endpoints, Server URL webhooks and tools and Web and server SDKs. Test the one you depend on.

  • Bring your own carrier: Vapi's pages say this is supported. (source: docs.vapi.ai)
  • Numbers from the provider: Free US-area-code Vapi numbers (inbound), with 1 to 10 included depending on package; Twilio, Telnyx, DIDWW and other SIP trunk numbers can be imported. (source: docs.vapi.ai)

Compliance as stated by Vapi

Vapi's pages mention HIPAA, SOC 2 and GDPR. These are the vendor's own statements and we have not audited them.

  • Wording on file for Vapi, from the page titled "Vapi docs: FAQ": Stated by vendor, self-attested: the FAQ says Vapi is HIPAA compliant, SOC 2 Type II certified and GDPR compliant. HIPAA mode requires the paid add-on and a signed BAA; HIPAA mode and Zero Data Retention are mutually exclusive. Reports are referenced on the vendor's security portal, which was not opened. (source: docs.vapi.ai)

What to check before choosing an alternative to Vapi

Vapi's pages describe 3 conditions and leave 4 points open; these questions start there. Put each one to every option you shortlist.

  1. Whole bill: Vapi's pages list transcriber, language model and voice as billed separately or extra, so price a full month with every charge in it. (source: vapi.ai)
  2. A condition on Vapi's pages: Free Vapi phone numbers use US area codes and support inbound calls; international or outbound numbers come from importing a provider number. Decide whether it applies to your calls. (source: docs.vapi.ai)
  3. Keeping your numbers: Vapi supports bringing your own carrier, so check that every option on your list accepts the carrier you have. (source: docs.vapi.ai)
  4. Number setup: Free US-area-code Vapi numbers (inbound), with 1 to 10 included depending on package; Twilio, Telnyx, DIDWW and other SIP trunk numbers can be imported. Check whether a new number, a forwarded line or your own carrier is the normal route with each option. (source: docs.vapi.ai)
  5. Concurrency: ask each option, Vapi included, how many calls can run at once on the plan you would choose and what raising that costs.
  6. What the rate covers: ask what Vapi's per-minute figure includes and what it leaves out, and ask the same of each option's own figure, before comparing numbers. (source: vapi.ai)
  7. Compliance paperwork: Vapi's pages mention HIPAA, SOC 2 and GDPR. Ask for the documents behind that wording and for what applies to your plan. (source: docs.vapi.ai)
  8. Hands-on test: Vapi states: $5 in free credits on the Usage option; one free Vapi phone number can be created without a payment method. Ask each option for a test of the same depth, with your own script. (source: vapi.ai)
  9. An open point we could not settle from Vapi's pages: The $0.05 per minute hosting fee is stated on the pricing page; the documentation pages we read describe the hosting fee without repeating the amount. Ask Vapi directly.

Where Calldesk fits and where it may not

We make Calldesk, so this section includes the cases where Vapi is the better match.

Where Calldesk may fit better:

  • Its pricing model, in Vapi's words: Usage-based: a per-minute Vapi hosting fee plus provider costs passed through at cost, with optional monthly Success Packages for support and capacity. Calldesk bills one per-minute rate per plan (2¢ to 9¢ per minute depending on the plan, with no monthly minimum, plus phone carrier charges), which may be easier to total without separate lines for the parts of a call.
  • Calldesk has a REST API, an MCP server and signed webhooks (/docs) if you want to drive agents from code, but it is a packaged agent, not a set of parts to assemble.

Where Vapi may fit better:

  • Mature developer tooling: a full API for assistants, tools, phone numbers and files, assistant versioning with traffic splitting, and testing/simulation included on every plan. Check whether Calldesk offers the same before you leave Vapi. (source: docs.vapi.ai)
  • States HIPAA support (with a BAA), SOC 2 Type II and GDPR compliance in its FAQ and publishes a trust portal. Compare this with the Calldesk pricing page and docs before you decide. (source: docs.vapi.ai)
  • Vapi's pages mention HIPAA, SOC 2 and GDPR, while Calldesk claims no certification. If that wording matters to your buyers, Vapi may be the safer starting point. (source: docs.vapi.ai)
  • Vapi's pages describe SIP trunking, and Calldesk does not offer it. If you connect your phone system by SIP trunk, Vapi may be the better match. (source: docs.vapi.ai)

Other options to consider besides Vapi

  • Calldesk

    Per-minute plans (Lite 2¢, Standard 5¢ and Pro 9¢ per minute), with phone carrier charges billed separately. You can register a number you own and forward calls to it; SIP trunking is not offered. Our own product.

    Made by the publisher of this page

  • Phonely

    Phonely is also a voice AI platform, and it bills by usage as Vapi does. The pages of both mention HIPAA, SOC 2 and GDPR.

    Verified 2026-10-10 (source: phonely.ai)

  • Retell AI

    Retell AI is also a voice AI platform, and it bills by usage as Vapi does. Both list Twilio and Telnyx among their integrations. The pages of both mention HIPAA, SOC 2 and GDPR.

    Verified 2026-10-10 (source: retellai.com)

  • ThunderPhone

    ThunderPhone is also a voice AI platform, and it bills by usage as Vapi does. Both list Twilio and Telnyx among their integrations. ThunderPhone's pages mention HIPAA and GDPR, while Vapi's pages mention HIPAA, SOC 2 and GDPR.

    Verified 2026-10-10 (source: thunderphone.com)

What we could not confirm about Vapi

  • The $0.05 per minute hosting fee is stated on the pricing page; the documentation pages we read describe the hosting fee without repeating the amount.
  • Whether a Vapi-provided free phone number can be ported out to another carrier was not found in the pages read.
  • The vendor's security portal (security.vapi.ai) was not opened, so certification reports were not independently seen.
  • Exact JSON shape of an assistant export and whether knowledge-base files are downloadable (not just listable) was not verified.

What we read about Vapi

This page rests on 10 pages from Vapi's public site, last read on October 10, 2026. The facts above came from "Vapi pricing page" (pricing and strengths), "Vapi docs: Pricing and Success Packages" (pricing and limits), "Vapi docs: FAQ" (pricing, compliance wording and strengths), "Vapi docs: Import number from Twilio" (phone setup and strengths), "Vapi docs: Versioning" (strengths) and "Vapi docs: Free phone numbers" (limits). Anything those pages did not say is shown as not stated, not guessed.

Details about Vapi come from its public pages as they were on October 10, 2026. Vapi may have changed them since, and a page that was unclear to us may be clear to you. Corrections: support@calldesk.tech. We make Calldesk, so read this page with that in mind and check anything important with Vapi directly.

Sources