Stammer AI Margin Stack

Stammer AI's Agency Plan ($197/mo) covers 20 chat and 20 voice agents with unlimited client resale, but per-message costs ($0.001 to $0.03 depending on model) stack on top. The Margin Stack framework helps agencies calculate true delivery cost per client: sum the monthly plan share (e.g., $197 divided by number of clients) plus average message volume times per-message rate. For a client using 10,000 messages/month at $0.01/msg, the cost is ~$119.70 ($9.85 plan share + $100 messages). A retainer of $500/mo yields 76% margin. Agencies targeting local service businesses (dentists, salons) can use the Stammer AI Starter Chat offer ($1,080/mo) as a benchmark, adjusting for message volume. The framework prevents margin erosion from high-volume clients and guides tiered pricing based on usage.

By InnovaAI Research·Published 7 Jul 2026·Updated 2 Sep 2026