Eigen 5.0.0 released!

Tuesday, September 30, 2025

Eigen 5.0.0 has been released on September 30, 2025.

Please check the release page for source archives and release notes.

Note we have switched to semantic versioning, so have dropped the “World” version 3 from the version number. Previously, Eigen used a WORLD.MAJOR.MINOR scheme. From now on, version numbers will follow the MAJOR.MINOR.PATCH format, indicating breaking changes, new features, and bug fixes, respectively. The WORLD version will remain 3 for this and subsequent releases for posterity.

Notice: that 5.x releases require building with c++14 support.

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