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AssemblyAI Launches Voice Agent API — Complete Voice Pipeline Behind Single WebSocket at $4.50/Hour Flat Rate
AssemblyAI launched its Voice Agent API on May 19, integrating speech-to-text (Universal-3 Pro ASR), LLM routing, and voice generation into a single WebSocket connection with ~1 second end-to-end latency. Key features include speech-aware VAD for natural turn-taking, JSON Schema tool calling for backend integrations, and 30-second reconnect for session continuity. The $4.50/hour flat rate breaks from industry per-minute billing and targets high-volume customer support and IVR use cases.
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