Vercel Engineering Benchmarks

Vercel · GitHub · Updated July 28, 2026

Vercel delivery benchmarks are based on 169 merged pull requests in the last 30 days (1,293 all-time), with 19.4 hours median cycle time, 2.4 hours median review time, and 47 active contributors. AI-related signals appear on 11.8% of recent work. PR volume is down -16% compared to the prior period.

Median Cycle Time
19.4h
PR open to merge
Median Review Time
2.4h
first review to approval
AI-Related Signals
11.8%
directional signal across recent PRs
Best Signal Fast Delivery
19.4h
Median cycle time of 19.4h

Repo vs Vercel Average

+3.8pp
AI Signals
+12.0h
Cycle Time
+1.5h
Review Time

Delivery Trend and AI Signals

PR Backlog (Humans)

Excludes AI agents and automation accounts.

PR Backlog (AI Agents)

AI coding agents only.

Cycle Time by AI-Related Signals

104.6h
with signals
71.1h
baseline
47.2%
difference

PR Breakdown

36 with signals / 183 total PRs

Top AI Tools

claude 23
cursor 7
claude_code 4
chatgpt 1

PR Type Breakdown

unknown 58
feature 56
bugfix 36
refactor 8
ci 4
chore 3

Methodology

Metrics are computed from merged pull request data synced daily from GitHub. AI-related metrics are directional signals inferred from pull request activity patterns and heuristics. Summary metrics use a 30-day rolling window; trends use a 90-day window. Last updated 28 minutes ago.

Updated daily from public GitHub pull requests.

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