Stammer AI

Stammer AI's Agency Plan at $197/month lets you resell up to 20 chat and 20 voice agents to unlimited clients, turning a fixed platform cost into scalable retainer revenue. With per-message costs as low as $0.001, agencies can bundle AI agents into high-margin monthly offers like the $1,080/mo Starter Chat package, directly increasing client lifetime value without proportional delivery effort.

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.

Every voice agent deployment leaves a labor floor: the calls, escalations, and corrections that still need a person. The framework asks agencies to measure that floor before pricing a retainer, because the floor, not the license fee, decides whether the account is profitable. Start with real call samples: count how many calls the agent resolves end-to-end, how many escalate, and how many need a human to fix a booking or a misread intent. Trillet's identity verification and live-system actions raise the automation ceiling in regulated work, but a wrong payment action still lands on someone's desk. Ruby and Abby keep humans in the loop by design, so their floor is visible in the invoice; white-label platforms hide it until month two. Forrester's finding that 83% of B2C marketers already use AI agents means clients compare your offer against a baseline, so quote the floor explicitly or absorb it silently.

Residual Labor Ratio is the share of call handling that still needs a human after an AI voice agent goes live: exceptions, escalations, identity checks, and callbacks the agent cannot close. It matters because agencies price retainers on the assumption that deployment removes labor, when in practice the labor moves rather than disappears. A clinic deploying Trillet for end-to-end booking still staffs someone for clinical questions and failed verifications, and a service business running Goodcall for lead capture still reviews transcripts and re-dials abandoned conversations. The ratio is measurable: pull 200 real call recordings, tag every transfer and every manual follow-up, then divide human-touched minutes by total call minutes. That number, not the vendor demo, sets your floor price. Forrester's 2027 predictions note AI expansion is colliding with real infrastructure constraints, which pushes usage costs up while residual labor stays fixed, so agencies that price before measuring the ratio absorb the gap on every retainer renewal.

Choose Stammer AI only if your agency can absorb or pass through per-message fees ranging from $0.001 to $0.03 per message on top of the $197 monthly Agency plan.

Collect at least 50 real recorded calls from the client's own phone line, run them through the candidate platform, and price the retainer only from measured containment, escalation accuracy, and per-minute usage cost.

If your agency needs a turnkey white-label platform to resell AI chatbots and voice agents to unlimited clients, and you can tolerate per-message costs on top of the $197/mo Agency Plan, then buy. If you require enterprise-grade concurrent call capacity beyond 3 lines or need a flat all-inclusive price without usage-based fees, skip.

A rapid deployment playbook for agencies to onboard a new client onto Stammer AI, including white-label setup, agent configuration, and channel integration, delivered in under a week.