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llama_index vs vllm

llama_index and vllm share 25 technologies: starlette, pyzmq, AIOHTTP, Ray, einops, OpenAI, torch, transformers, tiktoken, MCP, sentencepiece, datasets, peft, tokenizers, markupsafe, pillow, jinja2, Pydantic, jsonschema, pydantic-core, opentelemetry-api, prometheus-client, psutil, python-json-logger, and OpenTelemetry. Both are written in Python.

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What they share and what sets them apart

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

In common

vllm-project

vllm

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

Python96.3kRead on November 4, 2026, at commit 75f6761What is vllm built with?

Only in vllm

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
llama_index473,236 lines written2,055 code files
vllm2,375,117 lines written3,289 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.
llama_index0.2% of its commits signed by AIWith Claude Code, Cursor, and GitHub Copilot
vllm12.8% of its commits signed by AIWith Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, Devin, Mistral Vibe, CodeRabbit, Factory, and Qwen Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
llama_indexLast push November 5, 20267,963 commits52,820 stars
vllmLast push November 4, 202624,593 commits96,302 stars
TestsThe files that test the code, and the share of code files a test imports.
llama_index1,607 test files46.5% of its code files have a test that imports them
vllm2,419 test files60.2% of its code files have a test that imports them

Frequently asked questions

Which is bigger, llama_index or vllm?
vllm, with 2,375,117 lines written; llama_index has 473,236.

The proof: vllm-project/vllm's code at commit 75f6761

Which has more GitHub stars, llama_index or vllm?
vllm, with 96,302 stars; llama_index has 52,820.

The proof: vllm-project/vllm on GitHub

Which has more tests, llama_index or vllm?
vllm, with 2,419 test files; llama_index has 1,607.

The proof: vllm-project/vllm's code at commit 75f6761

Which was updated more recently, llama_index or vllm?
llama_index: its last push was on November 5, 2026, and vllm's on November 4, 2026.

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

Which has more commits signed by AI, llama_index or vllm?
vllm: an AI signed 12.8% of its commits, with Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, Devin, Mistral Vibe, CodeRabbit, Factory, and Qwen Code; in llama_index, 0.2%.

The proof: the commits each tool signed in vllm-project/vllm

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