> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Blended Start Trials

> All Blended metrics for start-trials — volume, value, and cost in one place.

Metrics for start trials across your Blended campaigns:

* [Blended Cost per Trial Start: Acquisition Efficiency](/reference/metrics/advertising/blended/start-trials/blended-cost-per-trial-start)