Faster, fewer errors

from your logsPart of the ten-minute kit. All nine metrics

What it tells you

Whether the AI feature actually saves time and reduces mistakes, compared with doing the task without it. Efficiency is the time; performance is the error rate. Report both.

How, from your logs

Time on task and error count per task, with and without the AI feature, on the same tasks. Add re-check time: how long people spend verifying AI output.

Benchmark

No benchmark yet. Run the kit and send us yours.

Plan your test explains how to choose metrics and how many participants you need.

Log events

task_started {task, condition}task_completed {task, condition, duration_ms, errors}recheck_time_ms {task, item}

Pairs with

Pre-filled form with review Urgency labels for prioritisation Review a colleague's work checkpoint

Research side · the property behind this metric

Property

Efficiency (Interaction). The speed at which a task can be performed. Donoso-Guzmán et al. 2025, Table 9

References

Donoso-Guzmán et al. 2025, Table 9: efficiency and performance.

Editors

Practice: Thomas Van den Bossche · v0.1