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API / Apache Grails Interview questions

Which is better for a new project in 2026: Grails 7 or Grails 8, and why?

For a genuinely new project starting today, Grails 7 is the pragmatic default, and the reasoning is entirely about maturity rather than either version being the "wrong" technology to bet on long-term.

Grails 8 is explicitly still in milestone/preview releases as of mid-2026, and the project's own guidance is to treat 8.0.x builds as evaluation and migration-planning material, not production deployments, until the 8.0.0 GA release lands. Starting a brand-new, real project on a pre-GA milestone means absorbing breaking changes and unfinished edges that a stable 7.x release has already settled.

The sensible middle path many teams take is starting the new project on Grails 7 today while actively tracking Grails 8's milestone progress, so the eventual upgrade — once 8.0.0 reaches GA and matures through a few patch releases — is a well-understood, incremental move rather than a surprise, especially since Grails 7 continues to receive full maintenance until the underlying Spring Boot 3.5.x line's end-of-life.

Why is Grails 7 the more pragmatic choice for a brand-new project as of mid-2026?
What middle-path approach do many teams take regarding the Grails 7-versus-8 decision?

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