lead magnet
The AI voice agency stack guide.
What every operator runs in 2026 — and what you can replace. Vapi vs Retell vs Hermes vs DIY. Real costs, real margins, no affiliate fluff.
By builders, for builders · Updated monthly · Last reviewed May 2026
get the guide
PDF + monthly updates.
Drop your email — guide arrives in 60 seconds.
the stack reality
Most operators run 7 tools. The guide explains which to keep.
Your current stack.
- /mo
Vapi or Retell
Voice infra
- /mo
GoHighLevel
CRM + automations
- /mo
Zapier or Make
Glue between tools
- /mo
Stripe + invoicing
Billing layer
- /mo
Twilio / number
Phone numbers + SMS
- /mo
Notion / Airtable
Client tracking
- /mo
Custom dev
Glue + tweaks
with hermes
One platform.
Hermes Business covers voice, CRM, campaigns, white-label demo pages, billing, and 7 workspaces.
Monthly savings
+$1,077
Annualized: $12,924 reinvested into clients, hires, or runway.
what's inside
Six sections. Every tool you'd consider.
Voice infra
Vapi vs Retell vs Bland vs Hermes. Per-minute cost, latency, voice quality, edge cases.
CRM + automations
GoHighLevel vs HubSpot vs Hermes. What CRM means for an AI voice agency vs marketing agency.
Glue layer
Zapier vs Make vs n8n vs custom code. When to use which, and when to replace all of them.
Billing
Stripe + invoicing + per-client P&L. The math nobody tells you about per-minute reconciliation.
Telephony
Twilio vs Telnyx vs Bandwidth. A2P compliance, number porting, international, SMS.
Reporting + dashboards
Notion vs Airtable vs custom. What clients actually want vs what you build.
get it
Get the stack guide.
PDF + monthly updates. Drop your email — guide arrives in 60 seconds.