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On 25 September 2026 AWS published agent skills for End User Messaging and SES. A delivered US Rich RCS text segment lists at $0.01194. A rich card lists at $0.02949. Pick the channel before you pick the model.
RCS for Business shipped 31 March 2026. A US Rich text segment lists at $0.01194 on delivery. A rich card lists at $0.02949. CLI 2.35.12 is the first release with send-rcs-message.
A US 10DLC number lists at $1 a month, a regular campaign at $10, and company vetting at $41.50. SMS is the OTP and the RCS fallback. It is the wrong place to build the rich agent.
Since 1 July 2025 WhatsApp on AWS is billed per message. The AWS fee is $0.005 outbound and $0.001 inbound. India Authentication and Utility are $0.002. Meta's fee is extra.