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Curated from the live project index

Best Open Source LLM Projects in 2026

Compare 30 leading open source LLM runtimes, serving engines, interfaces, frameworks, and developer tools. The shortlist combines GitHub adoption with current momentum, maintenance health, and recent repository activity.

Project data last synced at 2026-10-04 09:19 UTC. Scheduled every 168h. Snapshot generated at 2026-10-04 10:39 UTC.
Shortlist mix
Framework
13
LLM tooling
7
Runtime & serving
6
Interface
4

Side-by-side signals

Leading LLM projects at a glance

Open the full AI leaderboard →
ProjectPrimary roleStarsWeeklyHealthLanguageUpdated
ECCFramework272.5K+52.6KStrong93/100JavaScript2026-10-02 02:01 UTC
hermes-agentFramework251.1K+74.1KStrong95/100Python2026-10-04 09:18 UTC
firecrawlLLM tooling188.4K+36.0KStrong80/100TypeScript2026-10-03 18:46 UTC
AutoGPTLLM tooling187.6K+174Strong88/100Python2026-10-04 01:21 UTC
ollamaRuntime & serving182.2K+450Strong88/100Go2026-10-04 05:57 UTC
prompts.chatLLM tooling172.0K+4.2KHealthy77/100HTML2026-10-03 08:12 UTC
transformersRuntime & serving166.9K+220Strong89/100Python2026-10-04 01:58 UTC
difyFramework157.8K+815Strong92/100TypeScript2026-10-03 15:55 UTC
langflowInterface155.5K+4.2KStrong85/100Python2026-10-04 08:06 UTC
ponytailFramework154.0K+2.3KStrong84/100JavaScript2026-10-03 05:12 UTC
open-webuiRuntime & serving153.9K+1.0KStrong93/100Python2026-10-03 13:06 UTC
langchainFramework147.4K+599Strong84/100Python2026-10-03 08:31 UTC
awesome-llm-appsFramework140.7K+16.4KHealthy76/100Python2026-09-30 20:31 UTC
llama.cppRuntime & serving130.3K+2.9KStrong98/100C++2026-10-04 08:54 UTC
MoneyPrinterTurboLLM tooling128.3K+847Strong86/100Python2026-10-04 06:48 UTC

Explore the shortlist

Open source LLM projects with context

#01Framework

ECC

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

272.5K stars93/100 healthJavaScript
#02Framework

hermes-agent

The agent that grows with you

251.1K stars95/100 healthPython
#03LLM tooling

firecrawl

Supercharge your AI agents with data from the web and beyond. Building the library for superintelligence. 🔥

188.4K stars80/100 healthTypeScript
#04LLM tooling

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.

187.6K stars88/100 healthPython
#05Runtime & serving

ollama

Get up and running with Kimi, GLM, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

182.2K stars88/100 healthGo
#06LLM tooling

prompts.chat

f.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.

172.0K stars77/100 healthHTML
#07Runtime & serving

transformers

🤗 Transformers: the model-definition framework for state-of-the-art machine learning models in text, vision, audio, and multimodal models, for both inference and training.

166.9K stars89/100 healthPython
#08Framework

dify

Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.

157.8K stars92/100 healthTypeScript
#09Interface

langflow

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

155.5K stars85/100 healthPython
#10Framework

ponytail

Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

154.0K stars84/100 healthJavaScript
#11Runtime & serving

open-webui

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

153.9K stars93/100 healthPython
#12Framework

langchain

The agent engineering platform.

147.4K stars84/100 healthPython
#13Framework

awesome-llm-apps

100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.

140.7K stars76/100 healthPython
#14Runtime & serving

llama.cpp

LLM inference in C/C++

130.3K stars98/100 healthC++
#15LLM tooling

MoneyPrinterTurbo

利用 AI 大模型和自动化工作流,根据主题或关键词一键生成高清短视频。Generate HD short videos from a topic or keyword with an automated AI workflow.

128.3K stars86/100 healthPython
#16Framework

graphify

Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

123.6K stars95/100 healthPython
#17Interface

generative-ai-for-beginners

21 Lessons, Get Started Building with Generative AI

121.0K stars70/100 healthJupyter Notebook
#18LLM tooling

browser-use

Agents that use the browser.

117.1K stars84/100 healthPython
#19Framework

TradingAgents

TradingAgents: Multi-Agents LLM Financial Trading Framework

109.7K stars64/100 healthPython
#20LLM tooling

caveman

🪨 why use many token when few token do trick. Viral skill + proxy for coding agents that cuts 65% of tokens by talking like a caveman.

109.7K stars73/100 healthJavaScript
#21Interface

LLMs-from-scratch

Implement a ChatGPT-like LLM in PyTorch from scratch, step by step

106.0K stars67/100 healthJupyter Notebook
#22Runtime & serving

vllm

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

93.1K stars86/100 healthPython
#23Runtime & serving

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

91.7K stars95/100 healthGo
#24Framework

PaddleOCR

Turn any PDF or image document into structured data for your AI. A powerful, lightweight OCR toolkit that bridges the gap between images/PDFs and LLMs. Supports 100+ languages.

90.6K stars74/100 healthPython
#25Framework

crawl4ai

Open-source web crawler and scraper for LLMs and AI agents: any website into clean, LLM-ready Markdown. Run it yourself, or use Crawl4AI Cloud with one key.

84.7K stars66/100 healthPython
#26LLM tooling

llm-course

Course to get into Large Language Models (LLMs) with roadmaps and Colab notebooks.

83.3K stars50/100 healthMixed
#27Interface

Prompt Engineering Guide

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

78.8K stars53/100 healthMDX
#28Framework

Deer Flow

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

77.6K stars90/100 healthPython
#29Framework

Archify

Turn any idea, plan, or codebase into a beautiful interactive diagram. An agent skill for Claude Code, Codex, and more.

76.9K stars69/100 healthJavaScript
#30Framework

Pi Mono

AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

75.4K stars90/100 healthTypeScript

How to choose

Compare LLM projects within the same layer

Local runtime

Prioritize hardware support, quantization formats, setup friction, model compatibility, and offline operation.

Production serving

Evaluate throughput, latency, batching, observability, scaling, API compatibility, and accelerator support.

Application framework or UI

Check extension points, data connectors, authentication, deployment model, user experience, and upgrade cadence.

Quick answers

Open source LLM project questions

What counts as an open source LLM project?+

This page includes infrastructure and applications built around large language models: local runtimes, inference and serving engines, developer frameworks, model interfaces, evaluation tools, and other repositories with a clear LLM signal. It is not limited to model-weight repositories.

Which open source LLM project should I start with?+

Choose by the layer you need. A local runtime is useful for running models on a workstation, a serving engine targets production inference, an interface adds an end-user experience, and a framework helps developers build applications. Compare projects within the same role before choosing.

Do GitHub stars show which LLM project is best?+

Stars are useful evidence of awareness and adoption, but they are not a quality guarantee. Maintenance health, recent releases, hardware support, license, throughput, integrations, and your deployment constraints can be more important.

Can I use these projects commercially?+

It depends on both the software license and the license of the model you run. Review the upstream repository, model terms, dependencies, and hosted-service restrictions before commercial use.

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