Running an AI Call Center Voice Agent in Production: An Orchestration Playbook

Deploying AI call center voice agents at scale requires careful orchestration to manage latency, failure modes, cost, and monitoring. The process involves integrating speech-to-text (STT), large language models (LLM), and text-to-speech (TTS) into a seamless pipeline, where each component contributes to the overall latency, with LLM being a significant factor. Ensuring the reliability of these systems under real-world conditions is crucial, as demonstrated by real incidents where background noise and inaccurate confidence scoring led to failures. The choice between bundled and build-your-own (BYO) stacks involves trade-offs between integration simplicity and control over individual components. Effective monitoring should focus on conversation-level metrics to catch issues that standard API health checks might miss. Cost modeling is essential, as pricing structures can vary significantly at high volumes, influenced by factors like concurrency fees and billing during silent periods. Compliance and latency requirements also drive the selection of stack components and their deployment, particularly for regulated industries.