Deno Engineering Benchmarks

Deno · GitHub · Updated September 11, 2026

Deno delivery benchmarks are based on 65 merged pull requests in the last 30 days (2,641 all-time), with 15.5 hours median cycle time, 44.0 hours median review time, and 20 active contributors. AI-related signals appear on 12.3% of recent work. PR volume is down -67% compared to the prior period.

Median Cycle Time
15.5h
PR open to merge
Median Review Time
44.0h
first review to approval
AI-Related Signals
12.3%
directional signal across recent PRs
Best Signal Fast Delivery
15.5h
Median cycle time of 15.5h
Watch Out Declining Cadence
-67%
PR volume down 67% vs prior period

Repo vs Deno Average

-5.6pp
AI Signals
+2.7h
Cycle Time
+40.4h
Review Time

Delivery Trend and AI Signals

PR Backlog (Humans)

Excludes AI agents and automation accounts.

PR Backlog (AI Agents)

AI coding agents only.

AI Signals vs Cycle Time

Correlation

moderate positive
r = 0.47 (14 weeks)

Cycle Time by AI-Related Signals

133.7h
with signals
111.6h
baseline
19.9%
difference

PR Breakdown

13 with signals / 90 total PRs

Top AI Tools

chatgpt 6
ai_generic 3
codex 1

PR Type Breakdown

unknown 60
bugfix 5

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 2 hours, 3 minutes ago.

Updated daily from public GitHub pull requests.

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