Stammer.ai is a white-label platform marketed to agencies for building, branding, and reselling chat and voice AI agents without coding. Agencies can deploy agents under their own domain/branding, keep 100% of client revenue, and set pricing. Key use cases include website chat, social messaging, CRM integrations, lead capture and qualification, appointment scheduling, and inbound/outbound voice calls with natural conversational flows. The platform supports full white-labeling (custom domains, logos, rebrandable API, branded dashboards and analytics), chat features (24/7 automated responses, knowledge base, lead capture, appointment booking, website widgets, social channel support), voice features (inbound/outbound calls, natural conversation flows, phone numbers, lead qualification), and extensibility via API and webhooks and CRM integrations. Usage billing is wallet-based with Agency Wallets and Sub-Account Wallets for client usage; sub-account wallets can be manually topped up or set to auto-reload. Agencies can monetize via onboarding/setup fees, subscriptions, and usage markups; marketing materials suggest typical markups of 3–5x (and examples up to 100%). Stammer documents cite example per-unit costs such as roughly $0.001–$0.003 per chat message and roughly $0.11–$0.17 per voice minute, but these are model- and plan-dependent and should be verified. Agencies on Agency and Full SaaS plans may bring their own OpenAI API key, which changes how message costs are handled. Public pricing pages list a 14-day trial with credits. Public plan listings (from Stammer docs) include Starter ($49/month), Agency ($197/month), and Full SaaS Mode / Enterprise tier ($497/month) with increasing quotas and signup wallet credits. The public docs contain some minor inconsistencies (for example, the Agency plan agent counts show 20 vs 30 in different tables); enterprise/custom pricing and large-scale deployment fees are not posted publicly and require contacting sales. Recommended next steps include verifying exact current plan limits and per-model costs with Stammer sales/support or signing up for the 14-day trial to test and capture live usage costs. Links and contact points are provided in the external links section. All statements here are drawn directly from collected public documentation and site pages; any up-to-date verification should be obtained from Stammer's site or sales/support.