What is LangChain.rb?

Ruby port of LangChain, providing chains, agents, memory, RAG, vector search for AI apps. Gem install, build fast.

How do you install LangChain.rb?

`gem install langchainrb` or add to Gemfile. Set API keys, require "langchain".

Does LangChain.rb work with local LLMs?

Yes, via Ollama — `llm = Langchain::LLM::Ollama.new(url: "http://localhost:11434")`. No cloud needed.

LangChain.rb Lands in Ruby: Chains and Agents Without the Scratch-Built Drudgery

Ruby AI builders have slogged through raw API calls and vector hacks. LangChain.rb changes that — a full port of the JS powerhouse, ready to gem install. But who's really cashing in?

theAIcatchup Apr 09, 2026 4 min read

Ruby gem icon integrated with LangChain AI chains and agent diagrams

⚡ Key Takeaways

LangChain.rb ports full AI toolkit to Ruby: prompts, memory, RAG, agents in composable gems. 𝕏
Saves weeks of plumbing vs. from-scratch builds, like Rails did for web dev. 𝕏
Skeptical watch: avoid bloat; lean port could spark Ruby AI renaissance. 𝕏

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theAIcatchup

Ship faster. Build smarter.

#AI agents #AI agents Ruby #LLM frameworks #LangChain.rb #RAG Ruby #Ruby AI

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⚡ Key Takeaways

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