Experiment metrics
The §5 targets that read the hypothesis. 0 paid users.
100%
Activation
target ≥ 60%
104.2%
Brief completion
target ≥ 95%
14.4s
Time-to-Brief (p90)
target ≤ 25,000 ms
46%
Cache hit rate
target ≥ 50% by week 6
2%
Track rate
target ≥ 25%
0%
Free → Plus
target ≥ 5%
—
Alert engagement
target ≥ 40%
9.6¢
Cost / fresh Brief
Funnel
query submitted
48
query refused
2
brief completed
50
cache hit
23
cache miss
27
track tapped
2
tracker created
1
paywall viewed
1
checkout started
0
subscription active
0
alert sent
0
alert opened
0
rate limited
0
Privacy-respecting: events are stored in our own Postgres (spec §14), not a third-party tracker. Paid D30 retention is computed over a rolling 30-day window once the beta has run that long.