Vercel Sandbox 3.0.0

Major Changes

• Add support for Vercel Managed Images and deprecate the runtime option in the SDK and CLI. Runtime-based creation remains supported through the legacy v2 API; image-based and default creation use the v3 API. Passing both runtime and image is an error. (#276)

  Sandboxes that do not specify an image now use vercel/sandbox/universal. The previous default was the node24 runtime on Amazon Linux 2023. The new default is based on Ubuntu and includes Node.js 24, Bun, Python 3.14, coding agents, and common development and debugging tools.

  Existing runtime calls continue to work, it's recommended to migrate to Vercel managed images when possible:

  • Not using runtime: omit image to use the new Universal image, or set image: "vercel/sandbox/node:24" for an Ubuntu-based Node.js equivalent to the previous default.
  • Using runtime: "node22": use image: "vercel/sandbox/node:22" for an Ubuntu-based equivalent.
  • Using runtime: "node24": use image: "vercel/sandbox/node:24" for an Ubuntu-based equivalent.
  • Using runtime: "node26": use image: "vercel/sandbox/node:26" for an Ubuntu-based equivalent.
  • Using runtime: "python3.13": use image: "vercel/sandbox/python:3.14" for an Ubuntu-based equivalent, and note the Python version upgrade.