A2P 10DLC Costs for Two-Way AI SMS Agents
A2P 10DLC costs US$0.062 to US$0.072 for a six-message two-way conversation, plus brand and campaign fees. Inbound replies are billed. Full worked sums inside.
A2P 10DLC costs US$0.062 to US$0.072 for a six-message two-way conversation, plus brand and campaign fees. Inbound replies are billed. Full worked sums inside.
A per-object portability matrix for Vapi and Retell AI, traced to each vendor’s own API reference and read 10 September 2026, plus what a full export costs.
Why AI voice agent keypresses miss: the three DTMF transports, what each platform sends by default, and the packet-level test that proves a digit arrived.
Your AI agent promised a customer something you do not offer. Freeze the prompt version before you edit it, run the first-hour evidence hold, call a lawyer.
The call completed but nothing reached your CRM. Run the three-ledger test, compare seven published webhook contracts, then alarm at 60 minutes, not five.
Dead air on tool calls gets blamed on the API. Often not: livekit/agents 5826 measured 590-1000 ms in the framework, on models that speak before a tool call.
LiveKit promises a voice agent in under 10 minutes; its docs run to 261 distinct pages. The engineer-day gap, priced stage by stage, and when in-house wins.
Connect an AI voice agent to your own SIP trunk: the verified interop matrix for Vapi, Retell, LiveKit and Twilio, plus the five seams that break a first call.
How to wash calling lists against Australia’s Do Not Call Register: the four submission channels, ACMA credit fees to A$142,271, and the cost per number.
Build AI voice agent failover in four layers: SIP trunk, transcriber, voice and model, with vendor defaults and the timeouts that leave callers in silence.