The canary build has been Rust for over a month, available to anyone. In that time it has been used in production for Claude Code and Prisma Compute.

We found the Rust based canary version to solve a number of memory leaks that we were struggling with in the Zig based 1.3. One of our engineers wrote up the details here: https://www.prisma.io/blog/bun-rust-rewrite-prisma-compute

Not sure why this purely factual post got downvoted. Upvoted it.