Keep round‑trip time under 600ms, implement barge‑in, and constrain tool calls to idempotent, reversible operations. Ground every claim to a trusted source.
Voice agent architecture
- Low‑latency streaming ASR → LLM → TTS with chunked transport.
- Barge‑in handling to interrupt TTS and re‑route the dialog.
- Tool sandbox limited to reversible actions and audit logs.
- Grounding answers to a KB or APIs with citations.
Quality tactics
- Tune voice and latency budget per use case.
- Add dialog policies for escalation, fallback and confirmations.
- Evaluate with barge‑in stress tests and call transcripts.
Real‑world examples
- Inbound support triage with identity checks and safe ticket updates.
- Outbound reminders that confirm details and reschedule with consent.
- Lead qualification calls with grounding to CRM and product KB.