Summary
Vercel announced Node.js 26 support for Vercel Sandboxes, with support available through recent @vercel/sandbox releases and the node26 runtime setting. The update gives sandboxed workloads access to a newer JavaScript runtime without leaving Vercel's isolated execution environment.
What changed
Vercel Sandboxes added Node.js 26 runtime support.
Why it matters
Fresh runtimes matter more as sandboxes become execution targets for agents, previews, and automated developer workflows. Runtime lag can quickly become a compatibility problem when tools assume newer Node features or package behavior.
Evidence excerpt
Vercel says Sandbox now supports Node.js 26 and that users can select it with the node26 runtime option in recent @vercel/sandbox releases.