Lucia vs Better Auth

At a Glance

Lucia

Better Auth

Lucia

Pros

Extremely lightweight and gives you full control over sessions and auth logic without any magic happening behind the scenes+148
Framework agnostic — works with SvelteKit, Astro, Nuxt, and vanilla Node.js equally well with the same core logic+134
You can audit every line of code since it's open source and the codebase is small enough to actually read+109
No external service dependency means auth works as long as your own server works — no third-party SLA to worry about+96

Cons

More boilerplate required than hosted solutions — you're responsible for building password reset, email verification, and MFA yourself

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