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Eino

Free

Eino provides a Golang AI application development framework with various component integrations and the ability to orchestrate Chains and Graphs similar to LangChain and LangGraph. ![GitHub Repo stars](https://img.shields.io/github/stars/cloudwego/eino?style=social)

FreeFree tier
Type
Open Source
Company
CloudWeGo
Visit Website GitHub (40 stars)

About Eino

Eino is an LLM application development framework written in Golang, inspired by LangChain, Google ADK, and other open-source frameworks. It provides reusable components such as ChatModel, Tool, Retriever, and ChatTemplate, with official implementations for OpenAI, Ollama, and more. The framework includes an Agent Development Kit (ADK) for building AI agents with tool use, multi-agent coordination, context management, and interrupt/resume for human-in-the-loop. It supports composition of components into graphs and workflows that can run standalone or be exposed as tools for agents. Eino also offers examples for common patterns and real-world use cases, making it suitable for developers building LLM-powered applications in Go.

Key Features

Reusable building blocks: ChatModel, Tool, Retriever, ChatTemplate with official implementations for OpenAI, Ollama, and more
Agent Development Kit (ADK) for building AI agents with tool use, multi-agent coordination, context management, and interrupt/resume
Composition: connect components into graphs and workflows that can run standalone or be exposed as tools for agents
DeepAgent: complex task decomposition with sub-agents and progress tracking
Ready-to-use agent patterns like ChatModelAgent and DeepAgent
Golang-native design following Go conventions

Pros & Cons

Pros
  • Native Golang framework optimized for Go developers
  • Leverages patterns from LangChain and Google ADK
  • Open source with a growing community (12.4k GitHub stars)
  • Modular and composable architecture
  • Supports human-in-the-loop with interrupt/resume
  • Includes working examples for common use cases
Cons
  • Relatively new compared to Python-based frameworks like LangChain
  • Smaller ecosystem and fewer integrations than established alternatives
  • Primarily focused on the Go programming language community

Best For

Building conversational AI agents with tool integrationMulti-agent coordination for complex problem-solvingDeveloping LLM-powered applications with structured workflowsCreating custom RAG systems with retrievers and chat modelsAutomating tasks through agent delegation (shell, code execution, web search)

FAQ

What is Eino?
Eino is an LLM application development framework in Golang, inspired by LangChain and Google ADK, designed to follow Go conventions.
What components does Eino provide?
Eino provides reusable components such as ChatModel, Tool, Retriever, and ChatTemplate, with official implementations for OpenAI, Ollama, and more.
Does Eino support multi-agent systems?
Yes, Eino includes an Agent Development Kit (ADK) that supports multi-agent coordination, tool use, context management, and interrupt/resume for human-in-the-loop.
Is Eino free to use?
Yes, Eino is open source and free to use. It is hosted on GitHub under the CloudWeGo organization.