freeopen source · MITlast verified September 6, 2026official site ↗
At a glance
100% free and open-source TypeScript authentication library and educational resource under the MIT/0BSD license ($0/mo). Provides lightweight session management patterns, zero-dependency cryptographic utilities (Oslo), database session storage recipes, and OAuth 2.0/OIDC guides without subscription fees, usage caps, or proprietary cloud lock-in.
Self-hosting cost
Lucia is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.
100% free and open-source TypeScript authentication library and educational resource under the MIT/0BSD license ($0/mo). Provides lightweight session management patterns, zero-dependency cryptographic utilities (Oslo), database session storage recipes, and OAuth 2.0/OIDC guides without subscription fees, usage caps, or proprietary cloud lock-in.
Does Lucia have a free plan?
Yes — Lucia is completely free.
Can you self-host Lucia for free?
Lucia is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.
What are free or cheaper Lucia alternatives?
Cilium, OrbStack, Ray are in the same category with a free plan or open-source license.
pricing is editorial catalog data (last verified September 6, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.