Deno Engineering Benchmarks

Deno · GitHub · Updated June 3, 2026

Deno delivery benchmarks are based on 486 merged pull requests in the last 30 days (1,796 all-time), with 6.5 hours median cycle time, 1.4 hours median review time, and 21 active contributors. AI-related signals appear on 5.6% of recent work. PR volume is up 86% compared to the prior period.

Median Cycle Time
6.5h
PR open to merge
Median Review Time
1.4h
first review to approval
AI-Related Signals
5.6%
directional signal across recent PRs
Best Signal Fast Delivery
6.5h
Median cycle time of 6.5h

Repo vs Deno Average

-18.1pp
AI Signals
-4.4h
Cycle Time
-0.5h
Review Time

Delivery Trend and AI Signals

PR Backlog (Humans)

Excludes AI agents and automation accounts.

PR Backlog (AI Agents)

AI coding agents only.

Top AI Coding Agents

Most active AI coding agents in the last 90 days.

AI Signals vs Cycle Time

Correlation

moderate positive
r = 0.45 (14 weeks)

Cycle Time by AI-Related Signals

36.2h
with signals
20.8h
baseline
73.8%
difference

PR Breakdown

43 with signals / 509 total PRs

Top AI Tools

claude 30
copilot 1

PR Type Breakdown

bugfix 287
feature 66
refactor 55
test 31
chore 31
ci 10

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 16 hours, 28 minutes ago.

Updated daily from public GitHub pull requests.

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