Bun vs Node.js in 2026: Should You Actually Migrate?

Bun topped the JavaScript Rising Stars chart in 2025 and reached production for many mid-sized engineering teams by Q1 2026. While CTOs evaluate the viability of migrating from Node.js, Bun is currently utilized daily for CLIs, scripts, and tooling. Node.js remains the primary choice for most client servers. Benchmarks confirm that Bun provides a genuine speed advantage, particularly within test loops and installation processes, though some implementation challenges persist during the transition phase.