Monthly averages over each whole job. Bloomberg: 2018–2021, 31 months, about 250 PRs merged and 500 reviewed (rough counts). PostHog: May 2021 – January 2025, 45 months, 859 merged and 1,589 reviewed. Tano: January – September 2026, 8 months, 1,649 merged and 67 reviewed. "Reviewed" means a teammate's PR I reviewed or commented on.
Swipe sideways to see the whole chart.
For every PR of mine that merged, how many teammates' PRs I reviewed, by quarter. Bloomberg has a single dot because I only have rough totals for the whole job: about 500 reviews for 250 PRs, an average of 2.0. PostHog's last quarter, with 3 merged PRs, is left out. Tano's AI reviewer doesn't count as a teammate.
| Bloomberg | PostHog | Tano | |
|---|---|---|---|
| My PRs merged | ~250 | 859 | 1,649 |
| Teammates' PRs I reviewed or commented on | 500+ | 1,589 | 67 |
| Reviews per merged PR | ~2 | 1.85 | 0.04 |
| My PRs merged per month | ~8 | ~19 | ~206 |
| Teammates' PRs reviewed per month | ~16 | ~35 | ~8 |
| Busiest quarter, my PRs | 60+ | 94 | 770 |
| Busiest quarter, reviews | 100+ | 146 | 34 |
Before AI, review was half of how I worked with other engineers, and it grew with my output: the more I shipped, the more I reviewed. At Tano, an AI reviewer reads every PR and engineers own their areas end to end, so review stopped being a person's job. My output rose tenfold while the reviewing I did for others fell by three quarters.