Voice Agent Platform

Vapi

Developer-first voice agent platform for assembling LLM, STT, TTS, and telephony providers behind a hosted voice-agent API.

Voice Agent PlatformActive
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speech.dev has not published an operational assessment for this entry yet. Facts below are source-linked where available.

Functional overview

Developer-first voice agent platform for assembling LLM, STT, TTS, and telephony providers behind a hosted voice-agent API. Vapi Confirm telephony, integrations, analytics, and current pricing on the vendor sources linked below.

Best fit

Engineering teams that want API-level control over the voice stack without building the orchestration layer themselves.

Watch-outs

  • Total cost usually includes multiple vendors, not only the Vapi platform fee.
  • Regional phone-number availability depends on native Vapi support or imported telephony/SIP.
Availability and pricing
Regions (vendor buckets)
North America
Countries
Not listed
Hosting
Saas Vendor Cloud, Saas Customer Cloud
Languages
Not listed
Billing model
Usage Based
Public list price
Listed on vendor site
Headline rate (single line item)
USD 0.05/minute

Typical billing dimensions

Voice stacks often bill across several meters. Amounts vary by plan and provider mix — confirm on the vendor pricing page.

  • Platform fee
  • Speech-to-text
  • LLM / reasoning
  • Text-to-speech
  • Telephony
  • Concurrency / seats
  • Storage / recordings

Vapi lists a $0.05/min platform fee for calls. Model provider, transport, telephony, storage, and add-on costs may be separate or passed through.

Last verified 2026-05-24 · vendor pricing

Capabilities
Inbound Callsyes
Outbound Callsyes
Web Callingyes
Sip Trunkingyes
Phone Numbersyes
Human Handoffyes
Tool Callingyes
Workflow Builderyes
Analyticsyes
Evalsno
Integrations and compliance

Stt

deepgramopenaiassemblyai

Tts

elevenlabscartesiaopenai

Llm

openaianthropicgoogle-gemini

Telephony

twiliotelnyxsip

Compliance

Hipaa Baa AvailablePci Dss
Sources
HomepageDocsPricingFaq