Next.Js Engineering Benchmarks

Vercel · GitHub · Updated July 28, 2026

Next.Js delivery benchmarks are based on 306 merged pull requests in the last 30 days (2,282 all-time), with 15.0 hours median cycle time, 2.2 hours median review time, and 32 active contributors. AI-related signals appear on 3.3% of recent work. PR volume is down -12% compared to the prior period.

Median Cycle Time
15.0h
PR open to merge
Median Review Time
2.2h
first review to approval
AI-Related Signals
3.3%
directional signal across recent PRs
Best Signal Fast Delivery
15.0h
Median cycle time of 15.0h

Repo vs Vercel Average

-4.7pp
AI Signals
+7.5h
Cycle Time
+1.3h
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

59.4h
with signals
64.4h
baseline
-7.8%
difference

PR Breakdown

31 with signals / 338 total PRs

Top AI Tools

claude 11
copilot 10
claude_code 4
chatgpt 2

PR Type Breakdown

unknown 144
bugfix 60
feature 23
test 21
docs 19
refactor 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 29 minutes ago.

Updated daily from public GitHub pull requests.

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