patterns-ai-core/langchainrb

Health v2 · maintenance only

Adoption not part of the score

1991 stars · 264 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Langchain.rb is a Ruby library for building LLM-powered applications, providing a unified interface to many LLM providers (OpenAI, Anthropic, Gemini, Ollama, etc.) for embeddings, completions, and chat. It also supports prompt management, output parsers, RAG/vector search, assistants, and LLM evaluations.

Use cases

• build llm apps in ruby
• add rag and vector search to a ruby app
• create chatbot assistants in ruby
• switch between llm providers without changing code
• generate embeddings for text in ruby
• run llm evals
• integrate llms with rails

When to choose

• your stack is Ruby or Rails and you need LLM integration
• you want one API across multiple LLM providers
• you need RAG, assistants, or prompt management in Ruby

When to avoid

• you work in Python/JS where the main LangChain ecosystem is richer
• you need features not covered by the gem's modules
• you want a framework-agnostic raw API client only

Facets

library · maturity active

llm-inference rag agent-framework chatbot prompt-engineering sdk large-language-models artificial-intelligence chatbots developer-tools ruby jvm langchain embeddings vector-search llm-providers rails assistants evals ai-agents retrieval-augmented-generation

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markdown · JSON · MCP: product_card(name="patterns-ai-core/langchainrb")