Next.Js Engineering Benchmarks

Vercel · GitHub · Updated June 3, 2026

Next.Js delivery benchmarks are based on 266 merged pull requests in the last 30 days (1,653 all-time), with 15.4 hours median cycle time, 1.8 hours median review time, and 29 active contributors. AI-related signals appear on 1.1% of recent work. PR volume is up 16% compared to the prior period.

Median Cycle Time
15.4h
PR open to merge
Median Review Time
1.8h
first review to approval
AI-Related Signals
1.1%
directional signal across recent PRs
Best Signal Fast Delivery
15.4h
Median cycle time of 15.4h

Repo vs Vercel Average

-6.3pp
AI Signals
+7.3h
Cycle Time
+1.1h
Review Time

Delivery Trend and AI Signals

PR Backlog (Humans)

Excludes AI agents and automation accounts.

PR Backlog (AI Agents)

AI coding agents only.

Top AI Coding Agents

Most active AI coding agents in the last 90 days.

Cycle Time by AI-Related Signals

72.6h
with signals
43.5h
baseline
67.0%
difference

PR Breakdown

29 with signals / 276 total PRs

Top AI Tools

claude 15
copilot 9
cursor 2

PR Type Breakdown

bugfix 89
feature 54
refactor 42
docs 28
ci 25
chore 17

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 17 hours, 34 minutes ago.

Updated daily from public GitHub pull requests.

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