SaaS Customer Support Agent with AssemblyAI

A real-time conversational voice agent that provides customer support for a fictional SaaS product (Acme Cloud). Features smart turn detection using terminal punctuation, barge-in support, and keyterms boosting for domain-specific terminology. Built to handle typical support queries with ultra-low latency and natural conversation flow.

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The numbers

latencysub-300ms STT, 100ms end-of-turn threshold

cost / min—

frameworkPipecat

The stack

telephonyWeb Only

speech-to-textAssemblyAI Universal-2

llmCerebras Llama 3.3 70B

text-to-speechRime

System prompt

No prompt published.

Config

config.json

{
  "voice_id": "rex",
  "barge_in": true,
  "transport": "WebRTC",
  "tts_model": "mistv2",
  "keyterms_prompt": [
    "Pro Plan",
    "Enterprise",
    "ACME Corp",
    "Acme Cloud",
    "billing",
    "invoice"
  ],
  "max_turn_silence": 1200,
  "min_end_of_turn_silence_when_confident": 100
}

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