Langchain Engineering Benchmarks

LangChain · GitHub · Updated July 28, 2026

Langchain delivery benchmarks are based on 77 merged pull requests in the last 30 days (1,031 all-time), with 0.4 hours median cycle time, 0.1 hours median review time, and 9 active contributors. AI-related signals appear on 13.0% of recent work. PR volume is down -37% compared to the prior period.

Median Cycle Time
0.4h
PR open to merge
Median Review Time
0.1h
first review to approval
AI-Related Signals
13.0%
directional signal across recent PRs
Best Signal Fast Delivery
26m
Median cycle time of 26m
Watch Out Declining Cadence
-37%
PR volume down 37% vs prior period

Repo vs LangChain Average

+5.8pp
AI Signals
-0.1h
Cycle Time
-0.7h
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

21.4h
with signals
7.0h
baseline
207.6%
difference

PR Breakdown

13 with signals / 77 total PRs

Top AI Tools

chatgpt 5
claude 4
copilot 1

PR Type Breakdown

unknown 34
chore 15
bugfix 12
feature 7
docs 5
test 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 29 minutes ago.

Updated daily from public GitHub pull requests.

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