Our verdict

A well-maintained, widely adopted project. This assessment is derived from GitHub's own repository metrics on 2026-08-24, not from hands-on testing.

The agent engineering platform. The project is written primarily in Python, released under MIT, and has 144,911 stars and 24,151 forks on GitHub. 3,725 contributors have committed to it, and the most recent push was 2026-08-24. The latest tagged release is langchain-perplexity==1.4.1 (2026-08-21). Figures come from the GitHub API on 2026-08-24 and are refreshed daily; the score below weighs adoption, maintenance, release discipline, contributor breadth, licence clarity and issue hygiene.

RepositoryGitHub API, refreshed daily

144.9kStars

24.2kForks

908Watching

3.7kContributors

420Open issues

Licence: MIT
Language: Python
Last push: 2026-08-24

View on GitHub

Releases

langchain-perplexity==1.4.1 2026-08-21 langchain-perplexity==1.4.1
langchain==1.3.16 2026-08-20 langchain==1.3.16
langchain-fireworks==1.6.0 2026-08-20 langchain-fireworks==1.6.0
langchain-anthropic==1.6.1 2026-08-20 langchain-anthropic==1.6.1
langchain-openai==1.6.0 2026-08-19 langchain-openai==1.6.0
langchain-core==1.6.0 2026-08-19 langchain-core==1.6.0

Pros and cons

Pros

Pricing

We have not verified this tool’s pricing by hand yet, so we are not quoting numbers we cannot stand behind. Check the current plans on the vendor’s own page.

View pricing on docs.langchain.com

User reviews

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LangChain