One AI Build

Slang AI vs Vapi

Slang AI publishes its pricing; Vapi does not.

Both pages checked by August 19, 2026
Slang AIAI only
$399/mo
Core plan
Voice AI phone concierge purpose-built for full-service restaurants and hospitality groups that answers inbound calls 24/7 and books, changes, and cancels reservations directly in OpenTable, SevenRooms, Resy, Yelp, and Fishbowl.
VapiAI only
Pricing not published
no published plan
Developer platform for building voice AI agents: Vapi hosts the orchestration layer and charges a per-minute hosting fee, while you pick and pay for your own speech-to-text, LLM, text-to-speech and telephony providers and write the assistant, tools and server hooks yourself.

The differences that matter

  • Slang AI publishes prices. Vapi makes you ask.

Feature by feature

CapabilitySlang AIVapi
Live transferYesYes
Books appointmentsYesYes
Text follow-upYesYes
Outbound callsunstatedYes
SpanishYesYes
Human backupNoNo
Call recordingsYesYes
TranscriptsYesYes
Spam screeningunstatedunstated
Custom voiceunstatedYes
APIunstatedYes

"unstated" means the vendor doesn't claim it in their own documentation. It is not the same as no — it means nobody will put it in writing.

Slang AI plans

PlanPublished priceIncludesOver that
CoreStarting at $399 *per location——
PremiumStarting at $599 *per location——
EnterpriseCustom Pricing——

Vapi plans

PlanPublished priceIncludesOver that
Build$0.05 / min——
ScaleFixed Platform fee and committed volume(annual billing)——

Slang AI sources

Vapi sources