Head-to-Head Comparison
Bun VS Ruff
Bun
The fast all-in-one JavaScript runtime, bundler, test runner, and package manager — now powering Claude Code under Anthropic
86/100
Read full review →VS
Ruff
Extremely fast Python linter and formatter written in Rust — replaces Flake8, Black, isort and more in one binary
95/100
Read full review →Overall Rating
Bun
86/100
vs
Ruff
95/100
Feature
Bun
Ruff
Pricing Model
open-source
open-source
Open Source
✓
✓
Self-hostable
✓
✓
Has API
—
—
Pricing Starts At
Free
Free
Platforms
mac, linux, windows
mac, windows, linux