Frameworks & Starter Kits

langchain

Source: langchain-ai/langchain · ★ 139030 · Python

Last updated 2026-06-11 · benchmark measured 2026-09-23 — deterministic & reproducible

LangChain is a configurable Python framework for building LLM-powered agents.

Are you the maker of langchain? Claim this listing. It is free, takes a meta tag, a DNS record or GitHub admin rights, and never changes the score.

Launched something? Add your product, free.

To cite this score: legit.show/s/gh-langchain-ai-langchain/2026-09-23. That address never changes; this page moves with every re-measure.

Legit.Show scored langchain 74/100 on 2026-09-23, measured across 5 of 7 frames from its public surface. legit.show/s/gh-langchain-ai-langchain/2026-09-23

Is langchain production-ready?

Legit.Show scores langchain 74 out of 100 — the simple average of its 5 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on langchain (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. 5 of the seven frames returned a score; Performance and Accessibility were not measurable on this service and are recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — not measurable on this service (null — not scored as 0)
• Accessibility — not measurable on this service (null — not scored as 0)
• Security — 90/100
  How this compares across the catalogue: The Web Security Baseline
• Privacy — 25/100
  How this compares across the catalogue: The Privacy Gap
• Reliability — 100/100
• Standards — 75/100
• Discoverability — 80/100

What we measured

• Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 245 ms to first byte.
• Returns a proper 404 for unknown routes.
• 2 of 2 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.
• Discoverable: structured data, sitemap, OpenGraph image, canonical URL.

Who built it

product account @LangChain

Who it's for

AI developers · Agent builders · LLM application developers · Python developers

Sources and updates

Description

Taken from docs.langchain.com's own website on 2026-06-11.

Code

github.com/langchain-ai/langchain.

Benchmark

Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-23.

Put together from public information, without langchain's involvement. If anything here is wrong, tell us and a person will check it.

Visit langchain → · Alternatives to langchain → · How this was measured →