Technologies

What is langchain built with?

Q: Which repos have a stack like langchain's?

The ones that share most of its stack: Significant-Gravitas/AutoGPT, open-webui/open-webui, and langflow-ai/langflow.

langchain is a Python repo built with AIOHTTP. It reaches it with SQLAlchemy, uses AI through LangChain, langchain-openai, LangGraph, langchain-text-splitters, langsmith, and 5 more, makes its content with pillow, validates its data with Pydantic, and uses chromadb. It has 1,654 files and 426,036 written lines, with 895 test files.

Read on November 4, 2026, at commit aa2528f. Read it as markdown

langchain1,654 files

Backend

Data

chromadb1 file

Data access

SQLAlchemy1 file

AI

LangChain579 files
langchain-openai27 files
LangGraph26 files
langchain-text-splitters19 files
langsmith14 files
tiktoken5 files
exa-py4 files
Ollama4 files
groq1 file

Services

OpenAI13 files · libs/langchain/langchain_classic/agents/openai_assistant/base.py, line 23

Support

The base

AIOHTTP1 file

Content

pillow1 file

Validation

Pydantic193 files

Tools

typing-extensions232 files
packaging3 files

Other

pyyaml
httpx10 files
NumPy10 files
tenacity8 files
requests5 files
httpx23 files
certifi2 files
async-timeout1 file
httpx-sse1 file
tomli1 file

Other repos with a similar stack

Ordered by how much of its stack they share with langchain, then by stars.

Significant-GravitasAutoGPT
187.9k
AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.
9 of 27 in commonCompare →
open-webuiopen-webui
157.7k
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
7 of 27 in common · SvelteCompare →
langflow-ailangflow
156.3k
Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
7 of 27 in commonCompare →
browser-usebrowser-use
120k
Open-source Python library for AI browser agents, plus Browser Use Cloud: stealth browsers and a hosted agent API.
6 of 27 in commonCompare →
NVIDIASkillSpector
24.3k
Security scanner for AI agent skills. Detect vulnerabilities, malicious patterns, security risks, prompt injection, data exfiltration, and supply-chain risks in Claude Code, Codex, and MCP skills before you install them.
5 of 27 in commonCompare →
Comfy-OrgComfyUI
144.9k
The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface. The fastest local inference engine in the world.
4 of 27 in commonCompare →

Frequently asked questions

What language is langchain written in?

langchain is written in Python: 1,654 files and 426,036 written lines.

What framework does langchain use?

langchain is built with AIOHTTP.

Does langchain use AI?

Yes. langchain uses AI through LangChain, langchain-openai, LangGraph, langchain-text-splitters, langsmith, tiktoken, exa-py, Ollama, groq, and OpenAI.

What services does langchain use?

langchain uses chromadb.

Does langchain have tests?

Yes. langchain has 895 test files.

Which repos have a stack like langchain's?

The ones that share most of its stack:Significant-Gravitas/AutoGPT open-webui/open-webui langflow-ai/langflow

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