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neon vs vllm

neon and vllm share 10 technologies: axum, tower, Tokio, AIOHTTP, jinja2, tracing, tracing-subscriber, prometheus-client, psutil, and OpenTelemetry. neon is written in Rust and vllm 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?
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?

In common

Only in neon

  • asyncpg
  • aws-sdk-s3
  • pg8000
  • psycopg2-binary
  • Postgres
  • moka
  • Redis
  • clickhouse-connect
  • AWS S3
  • Sentry
  • werkzeug
  • jsonwebtoken
  • hmac
  • ed25519-dalek
  • pyjwt
  • parquet
  • opentelemetry-semantic-conventions
  • prometheus
  • env_logger
  • opentelemetry-otlp
  • tracing-opentelemetry
  • tracing-appender
  • boto3
  • log

Only in vllm

  • FastAPI
  • gitdb
  • pyzmq
  • Hugging Face
  • starlette
  • Ray
  • mkdocs-material
  • indicatif
  • NVIDIA
  • OpenAI
  • peft
  • quack-kernels
  • sentencepiece
  • torch
  • transformers
  • einops
  • safetensors
  • triton
  • torchvision
  • datasets
  • torchaudio
  • MCP
  • tokenizers
  • tiktoken
  • markdown
  • markupsafe
  • pymdown-extensions
  • pillow
  • image
  • Pydantic
  • msgspec
  • jsonschema
  • pydantic-core
  • opentelemetry-api
  • python-json-logger
  • opentelemetry-sdk
  • prometheus-fastapi-instrumentator

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
neon379,885 lines written659 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.
neon0.1% of its commits signed by AIWith Devin
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.
neonLast push August 31, 20268,459 commits23,296 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.
neon281 test files12.4% 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, neon or vllm?
vllm, with 2,375,117 lines written; neon has 379,885.

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

Which has more GitHub stars, neon or vllm?
vllm, with 96,302 stars; neon has 23,296.

The proof: vllm-project/vllm on GitHub

Which has more tests, neon or vllm?
vllm, with 2,419 test files; neon has 281.

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

Which was updated more recently, neon or vllm?
vllm: its last push was on November 4, 2026, and neon's on August 31, 2026.

The proof: vllm-project/vllm's commits on GitHub

Which has more commits signed by AI, neon 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 neon, 0.1%.

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

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