Langchainjs Engineering Benchmarks

LangChain · GitHub · Updated June 3, 2026

Langchainjs delivery benchmarks are based on 29 merged pull requests in the last 30 days (773 all-time), with 0.8 hours median cycle time, 1.5 hours median review time, and 12 active contributors. AI-related signals appear on 6.9% of recent work. PR volume is up 7% compared to the prior period.

Median Cycle Time
0.8h
PR open to merge
Median Review Time
1.5h
first review to approval
AI-Related Signals
6.9%
directional signal across recent PRs
Best Signal Fast Delivery
46m
Median cycle time of 46m

Repo vs LangChain Average

+0.4pp
AI Signals
+0.1h
Cycle Time
-2.6h
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

137.9h
with signals
58.5h
baseline
135.7%
difference

PR Breakdown

2 with signals / 33 total PRs

Top AI Tools

chatgpt 2

PR Type Breakdown

bugfix 12
docs 4
chore 4
feature 3
unknown 3
ci 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 18 hours ago.

Updated daily from public GitHub pull requests.

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