Wall Check
Vapi
Voice AI developer API; pay-as-you-go per minute ($0.05/min) with pass-through LLM/telephony costs.
Gates 1/5 1 of the five walls fired — the score is a count, not a verdict.
Checked 2026-10-26 · re-check due 2026-12-25. We run this vendor ourselves.
The five walls
✓ Price wall
The free tier ends. The limit you hit while everything still looks free.
Pay-as-you-go model with $10 starting credit; zero mandatory monthly platform subscription.
source · checked 2026-10-26
✓ Permission wall
You can see the setting but not touch it. Licenses and admin roles decide what you control.
Full API access, custom LLM routing, and webhook event configuration open on standard tier.
source · checked 2026-10-26
✓ Gate wall
A human at the vendor decides your timeline — approvals, reviews, onboarding queues.
Immediate self-serve developer signup and API key generation.
source · checked 2026-10-26
! Meter wall
Cost scales with your success. Per-unit, per-seat, per-message pricing that grows as you do.
Platform fee is $0.05/minute; underlying LLM tokens, TTS voices (Deepgram/Cartesia), and telephony meter separately.
source · checked 2026-10-26
✓ Exit wall
Getting out costs more than getting in. Your data, your domain, your number — who keeps them.
Assistant prompts and schemas export as JSON via REST API; SIP trunks can be repointed to any carrier.
source · checked 2026-10-26
The twelve questions
- What is the hard number where the free tier ends?
- Includes $10 starting credit; bills strictly on per-minute usage.
- What does a busy month actually cost at per-unit pricing?
- Call volume spikes meter linearly at $0.05/min plus transcription and LLM tokens.
- Can one real record be exported on day one — and does it open?
- Assistant definitions, tool call schemas, and call transcripts fully accessible via REST API.
Documents read for this check: pricing page, developer documentation, API reference.
Where Vapi shows up in our fixes
- What an AI receptionist actually costs — every pricing model, verified
- Build a voice agent for $0 on Google Cloud free tiers
Side-by-side comparisons
We are not paid by this vendor or any vendor listed here. These are the gates we found — which ones you accept is your call, not ours.
Free Deliverable Packages & 15-Minute Q&A
Pick a free first-implemented deliverable package, or book a free 15-minute Q&A. We answer your questions about whatever you want to talk about — no sales, no overall work done. Tell us what you need and we send you a markdown deliverable to complete it.