Open source large-language-models projects

Every project in the registry tagged large-language-models, ranked by real GitHub adoption.

projects 12 combined stars ★ 326K refresh nightly
01 Langflow ★ 155K

Visual builder for AI agents and RAG pipelines

last push7 hours ago languagePython licenseMIT
02 LightRAG ★ 40K

[EMNLP2025] LightRAG: Simple and Fast Retrieval-Augmented Generation

last push9 hours ago languagePython licenseMIT
03 Langfuse ★ 35K

Open source LLM engineering platform for AI-powered applications

last push7 hours ago languageTypeScript license
04 agentscope ★ 32K

Build and run agents you can see, understand and trust.

last push16 hours ago languagePython licenseApache-2.0
05 haystack ★ 27K

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with exp

last push12 hours ago languagePython licenseApache-2.0
06 txtai ★ 13K

💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows

last push2 days ago languagePython licenseApache-2.0
07 Activeloop ★ 9.2K

The tensor database for AI data

last push4 months ago languageC++ licenseApache-2.0
08 Helicone ★ 6.2K

Build reliable AI apps with comprehensive observability

last push31 hours ago languageTypeScript licenseApache-2.0
09 optillm ★ 4.3K

Optimizing inference proxy for LLMs

last push21 hours ago languagePython licenseApache-2.0
10 Swirl Search ★ 3.0K

Get instant answers from your company knowledge

last push12 days ago languagePython licenseApache-2.0
11 Beam ★ 1.8K

Serverless GPU compute with sub-second cold starts

last push31 hours ago languageGo licenseAGPL-3.0
12 ServerlessLLM ★ 715

Serverless LLM Serving for Everyone.

last push14 days ago languagePython licenseApache-2.0

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Frequently asked questions

How many open source large-language-models projects are there?

This registry tracks 12 projects tagged large-language-models, with 325,983 GitHub stars between them. The most-adopted is Langflow at 154,943 stars.

Are these large-language-models projects free to use?

Yes — 11 of the 12 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which large-language-models project should I choose?

The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.

Are these large-language-models projects still maintained?

11 of the 12 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.