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neon vs llama_index

neon and llama_index share 12 technologies: asyncpg, psycopg2-binary, Redis, clickhouse-connect, AIOHTTP, pyjwt, jinja2, opentelemetry-semantic-conventions, prometheus-client, psutil, boto3, and OpenTelemetry. neon is written in Rust and llama_index in Python.

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What they share and what sets them apart

neondatabase

neon

Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.

Rust23.3kRead on November 4, 2026, at commit fa50421What is neon built with?

Only in neon

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.
neon379,885 lines written659 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.
neon0.1% of its commits signed by AIWith Devin
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.
neonLast push August 31, 20268,459 commits23,296 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.
neon281 test files12.4% 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, neon or llama_index?
llama_index, with 473,236 lines written; neon has 379,885.

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

Which has more GitHub stars, neon or llama_index?
llama_index, with 52,820 stars; neon has 23,296.

The proof: run-llama/llama_index on GitHub

Which has more tests, neon or llama_index?
llama_index, with 1,607 test files; neon has 281.

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

Which was updated more recently, neon or llama_index?
llama_index: its last push was on November 5, 2026, and neon's on August 31, 2026.

The proof: run-llama/llama_index's commits on GitHub

Which has more commits signed by AI, neon or llama_index?
llama_index: an AI signed 0.2% of its commits, with Claude Code, Cursor, and GitHub Copilot; in neon, 0.1%.

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