A 100-Line LLM Framework
I've seen a lot of comments about how complex frameworks like LangChain can be. Over the holidays, I wanted to see how minimal an LLM framework could get if we stripped away everything non-essential. The result is an LLM framework in just 100 lines of code. These 100 lines capture what I see as the core abstraction of most LLM frameworks: a nested directed graph that breaks down tasks into multiple LLM steps, with branching and recursion to enable agent-like decision-making. From there, you can layer on more advanced features like agents, RAG, task decomposition, and more. I’ve intentionally…
A 100-Line LLM Framework launched on January 6, 2025 with 9 votes, #2,006 of 6,142 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Pocket Flow: 100-line LLM framework. Let Agents build Agents! - The-Pocket/PocketFlow
Lightweight : Just 100 lines. Zero bloat, zero dependencies, zero vendor lock-in. Expressive : Everything you love—( Multi- ) Agents , Workflow , RAG , and more. Agentic Coding : Let AI Agents (e.g., Cursor AI) build Agents—10x productivity boost! Current LLM frameworks are bloated... You only need 100 lines for LLM Framework! The 100 lines capture the core abstraction of LLM frameworks: Graph! From there, it's easy to implement popular design patterns like ( Multi- ) Agents , Workflow , RAG , etc. 👀 Want to see other tutorials for dummies? Create an issue! 🚀 Through Agentic Coding —the fastest LLM App development paradigm-where humans design and agents codefrom github.com
In the maker’s words, at launch
I've seen a lot of comments about how complex frameworks like LangChain can be. Over the holidays, I wanted to see how minimal an LLM framework could get if we stripped away everything non-essential. The result is an LLM framework in just 100 lines of code. These 100 lines capture what I see as the core abstraction…
Does a similar job
all alternatives →
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