Langchain Engineering Benchmarks
Langchain delivery benchmarks are based on 123 merged pull requests in the last 30 days (1,241 all-time), with 4.0 hours median cycle time, 0.1 hours median review time, and 28 active contributors. AI-related signals appear on 13.8% of recent work.
Median Cycle Time
4.0h
PR open to merge
Median Review Time
0.1h
first review to approval
AI-Related Signals
13.8%
directional signal across recent PRs
Best Signal
Fast Delivery
4.0h
Median cycle time of 4.0h
Repo vs LangChain Average
+6.0pp
AI Signals
+3.2h
Cycle Time
-0.2h
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
41.8h
with signals
26.4h
baseline
58.6%
difference
PR Breakdown
29 with signals /
138 total PRs
Top AI Tools
chatgpt
9
copilot
6
claude
3
ai_generic
1
PR Type Breakdown
unknown
41
bugfix
38
chore
20
feature
13
docs
9
test
1
Recent Pull Requests
View PR Explorer| Title | Author | AI |
|---|---|---|
| release(anthropic): 1.7.2 | ccurme | — |
| fix(anthropic): preserve invalid tool use blocks | ccurme | AI |
| chore(model-profiles): refresh model profile data | langchain-oss-model-profiles | — |
| release(openai): 1.6.2 | mdrxy | AI |
| fix(openai): add GPT-6 Astra reasoning efforts | mdrxy | AI |
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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