New API as a successor to One API

New API began as a feature-expanded fork of songquanpeng's one-api and has outpaced the upstream in development velocity. Most of the token-wallet and quota architecture is retained, with new-api adding OIDC SSO, a redesigned admin UI, expanded model support, and modernized infrastructure.

Relationship

• Fork date: new-api forked from one-api in 2024 and has diverged significantly since.
• License change: one-api is MIT; new-api is AGPL-3.0.
• Maintenance: songquanpeng/one-api is in slow maintenance mode; QuantumNous/new-api is actively developed with regular releases.
• Feature parity: new-api includes everything one-api offers plus native OIDC SSO, additional providers, and operational improvements.

Migration

Teams running one-api that need OIDC for admin-UI auth or that want ongoing feature development commonly migrate to new-api. The database schemas are close enough that migrations exist in the community, though any migration should be tested against a backup.