Metrics & KPIs

Time-to-First-Audio (TTFA)

/ time-to-first-audio-ttfa /

Delay from response generation start to the first audio byte reaching the caller.

Why it matters

TTFA isolates the synthesis-and-transport slice of response delay, telling you whether slowness lives in generation or delivery.

Related — Metrics & KPIs

After-Call Work (ACW)

Average Handle Time (AHT)

Average Speed of Answer (ASA)

Call Abandonment Rate

Containment Rate

CSAT (Customer Satisfaction Score)

Customer Effort Score (CES)

Deflection Rate

End-to-End Latency

First Call Resolution (FCR)

Time-to-First-Audio (TTFA)

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