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langgraph vs llama_index

langgraph and llama_index share 5 technologies: aiosqlite, psycopg, SQLite, LangChain, and Pydantic. Both are written in Python.

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What they share and what sets them apart

langchain-ai

langgraph

Build resilient agents.

Python44.5kRead on November 6, 2026, at commit 5847733What is langgraph built with?

Only in langgraph

In common

run-llama

llama_index

LlamaIndex is the document processing platform for AI

Python52.8kRead on November 5, 2026, at commit 444fdf0What is llama_index built with?

Only in llama_index

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
langgraph206,994 lines written205 code files
llama_index473,236 lines written2,055 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
langgraph0.8% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, and Jules
llama_index0.2% of its commits signed by AIWith Claude Code, Cursor, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
langgraphLast push November 6, 20266,078 commits44,533 stars
llama_indexLast push November 5, 20267,963 commits52,820 stars
TestsThe files that test the code, and the share of code files a test imports.
langgraph247 test files50.7% of its code files have a test that imports them
llama_index1,607 test files46.5% of its code files have a test that imports them

Frequently asked questions

Which is bigger, langgraph or llama_index?
llama_index, with 473,236 lines written; langgraph has 206,994.

The proof: run-llama/llama_index's code at commit 444fdf0

Which has more GitHub stars, langgraph or llama_index?
llama_index, with 52,820 stars; langgraph has 44,533.

The proof: run-llama/llama_index on GitHub

Which has more tests, langgraph or llama_index?
llama_index, with 1,607 test files; langgraph has 247.

The proof: run-llama/llama_index's code at commit 444fdf0

Which was updated more recently, langgraph or llama_index?
langgraph: its last push was on November 6, 2026, and llama_index's on November 5, 2026.

The proof: langchain-ai/langgraph's commits on GitHub

Which has more commits signed by AI, langgraph or llama_index?
langgraph: an AI signed 0.8% of its commits, with Claude Code, Cursor, GitHub Copilot, and Jules; in llama_index, 0.2%.

The proof: the commits each tool signed in langchain-ai/langgraph

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