React Compiler 1.0 went stable October 7, 2025; battle-tested on Meta apps and fully production-ready

Claim: React Compiler 1.0 released stable October 7, 2025.

Verbatim (react.dev): "We are releasing the compiler's first stable release today... The compiler has been battle tested on major apps at Meta and is fully production-ready."

Next.js 16 integration: "promoted from experimental to stable. It is not enabled by default as we continue gathering build performance data." (nextjs.org/blog/next-16)

Confidence: Verified.

Application: for React-heavy apps, enable on a branch, measure build time, then ship. For Astro sites with minimal client-side React, irrelevant.