Biome vs ESLint
Side-by-side comparison of Biome and ESLint. Pricing, features, best use cases, and honest verdict from a developer who has tested both.
Key Takeaways
- +Biome is better for: linter, formatter, rust
- +ESLint is better for: linter, javascript, typescript
- ~Both are infrastructure tools. Your choice depends on workflow preference and team setup.
Biome
Fast Rust-based formatter and linter for JavaScript and TypeScript. One tool replaces Prettier and ESLint with sub-second runs on large repos.
ESLint
The standard JavaScript and TypeScript linter. Massive plugin ecosystem, framework-specific configs, and integration with every editor.
Feature Comparison
| Feature | Biome | ESLint |
|---|---|---|
| Category | Infrastructure | Infrastructure |
| Type | Developer Tool | Developer Tool |
| Pricing | See website for pricing | See website for pricing |
| Best For | AI-powered development | AI-powered development |
| Language / Platform | TypeScript | TypeScript |
| Open Source | No | No |
In Depth
Biome
Biome is a Rust-based toolchain for web frontends. It formats and lints JavaScript, TypeScript, JSX, JSON, and CSS, and it does it roughly 25x faster than Prettier plus ESLint. The configuration model is a single biome.json with sane defaults, and migration tools convert existing Prettier and ESLint configs. The trade-off versus the legacy stack is a smaller plugin ecosystem; Biome ships its rules in-tree. For teams hitting lint and format speed walls on big monorepos, Biome is an immediate quality-of-life upgrade.
ESLint
ESLint is the linter the JavaScript world standardized on. The plugin ecosystem is its real moat: every framework, library, and accessibility rule has an ESLint plugin. The flat config (eslint.config.js) shipped in v9 cleaned up years of config debt. ESLint is slower than Biome on large repos and has a heavier mental model, but for most teams the plugin coverage and editor integration are reason enough to stay. Pairs with Prettier for formatting.
The Verdict
Both Biome and ESLint are strong tools in the infrastructure space. The right choice depends on your workflow. Read the full review of each tool for a deeper dive, or watch the video walkthroughs to see them in action.
