Best Open Source openai Libraries

#1Significant-Gravitas/AutoGPT

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.

#2f/prompts.chat

a.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Free and open source — self-host for your organization with complete privacy.

#3langgenius/dify

Production-ready platform for agentic workflow development.

#4langchain-ai/langchain

🦜🔗 The platform for reliable agents.

#5open-webui/open-webui

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

#6microsoft/generative-ai-for-beginners

21 Lessons, Get Started Building with Generative AI

#7microsoft/markitdown

Python tool for converting files and office documents to Markdown.

#8infiniflow/ragflow

RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

#9lobehub/lobehub

The ultimate space for work and life — to find, build, and collaborate with agent teammates that grow with you. We are taking agent harness to the next level — enabling multi-agent collaboration, effortless agent team design, and introducing agents as the unit of work interaction.

#10openai/openai-cookbook

Examples and guides for using the OpenAI API

#11vllm-project/vllm

A high-throughput and memory-efficient inference and serving engine for LLMs

#12dair-ai/Prompt-Engineering-Guide

🐙 Guides, papers, lessons, notebooks and resources for prompt engineering, context engineering, RAG, and AI Agents.

#13OpenHands/OpenHands

🙌 OpenHands: AI-Driven Development

#14xtekky/gpt4free

The official gpt4free repository | various collection of powerful language models | opus 4.6 gpt 5.3 kimi 2.5 deepseek v3.2 gemini 3

#15AntonOsika/gpt-engineer

CLI platform to experiment with codegen. Precursor to: https://lovable.dev

#16lencx/ChatGPT

🔮 ChatGPT Desktop Application (Mac, Windows and Linux)

#17unslothai/unsloth

Fine-tuning & Reinforcement Learning for LLMs. 🦥 Train OpenAI gpt-oss, DeepSeek, Qwen, Llama, Gemma, TTS 2x faster with 70% less VRAM.

#18FlowiseAI/Flowise

Build AI Agents, Visually

#19dbeaver/dbeaver

Free universal database tool and SQL client

#20ggml-org/whisper.cpp

Port of OpenAI's Whisper model in C/C++

#21siyuan-note/siyuan

A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.

#22zhayujie/chatgpt-on-wechat

CowAgent是基于大模型的超级AI助理，能主动思考和任务规划、访问操作系统和外部资源、创造和执行Skills、拥有长期记忆并不断成长。同时支持飞书、钉钉、企业微信应用、微信公众号、网页等接入，可选择OpenAI/Claude/Gemini/DeepSeek/ Qwen/GLM/Kimi/LinkAI，能处理文本、语音、图片和文件，可快速搭建个人AI助手和企业数字员工。

#23Aider-AI/aider

aider is AI pair programming in your terminal

#24QuivrHQ/quivr

Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.

#25chatboxai/chatbox

Powerful AI Client

#26BerriAI/litellm

Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI (or native) format, with cost tracking, guardrails, loadbalancing and logging. [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM]

#27reworkd/AgentGPT

🤖 Assemble, configure, and deploy autonomous AI Agents in your browser.

#28mouredev/Hello-Python

Curso para aprender el lenguaje de programación Python desde cero y para principiantes. 100 clases, 44 horas en vídeo, código, proyectos y grupo de chat. Fundamentos, frontend, backend, testing, IA...

#29danny-avila/LibreChat

Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active.

#30code-yeongyu/oh-my-opencode

the best agent harness

#31asgeirtj/system_prompts_leaks

Collection of extracted System Prompts from popular chatbots like ChatGPT, Claude & Gemini

#32PDFMathTranslate/PDFMathTranslate

[EMNLP 2025 Demo] PDF scientific paper translation with preserved formats - 基于 AI 完整保留排版的 PDF 文档全文双语翻译，支持 Google/DeepL/Ollama/OpenAI 等服务，提供 CLI/GUI/MCP/Docker/Zotero

#33openai/openai-python

The official Python library for the OpenAI API

#34songquanpeng/one-api

LLM API 管理 & 分发系统，支持 OpenAI、Azure、Anthropic Claude、Google Gemini、DeepSeek、字节豆包、ChatGLM、文心一言、讯飞星火、通义千问、360 智脑、腾讯混元等主流模型，统一 API 适配，可用于 key 管理与二次分发。单可执行文件，提供 Docker 镜像，一键部署，开箱即用。LLM API management & key redistribution system, unifying multiple providers under a single API. Single binary, Docker-ready, with an English UI.

#35voideditor/void

#36microsoft/semantic-kernel

Integrate cutting-edge LLM technology quickly and easily into your apps

#37labring/FastGPT

FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive setup or configuration.

#38simstudioai/sim

Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.

#39e2b-dev/awesome-ai-agents

A list of AI autonomous agents

#40langchain-ai/langgraph

Build resilient language agents as graphs.

#41nextai-translator/nextai-translator

基于 ChatGPT API 的划词翻译浏览器插件和跨平台桌面端应用 - Browser extension and cross-platform desktop application for translation based on ChatGPT API.

#42mlflow/mlflow

The open source developer platform to build AI agents and models with confidence. Enhance your AI applications with end-to-end tracking, observability, and evaluations, all in one integrated platform.

#43langfuse/langfuse

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

#44yamadashy/repomix

📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

#45vercel/ai

The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents

#46SYSTRAN/faster-whisper

Faster Whisper transcription with CTranslate2

#47NirDiamant/GenAI_Agents

This repository provides tutorials and implementations for various Generative AI Agent techniques, from basic to advanced. It serves as a comprehensive guide for building intelligent, interactive AI systems.

#48dyad-sh/dyad

Local, open-source AI app builder for power users ✨ v0 / Lovable / Replit / Bolt alternative 🌟 Star if you like it!

#49openai/openai-agents-python

A lightweight, powerful framework for multi-agent workflows

#50lss233/kirara-ai

🤖 可 DIY 的 多模态 AI 聊天机器人 | 🚀 快速接入 微信、 QQ、Telegram、等聊天平台 | 🦈支持DeepSeek、Grok、Claude、Ollama、Gemini、OpenAI | 工作流系统、网页搜索、AI画图、人设调教、虚拟女仆、语音对话 |