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Sandboxes now use our next-generation backend, affording substantially higher creation rates and concurrency limits for CPU Sandboxes. No code changes are required, but there are some semantic differences to be aware of: The modal.Sandbox.create() method now blocks until the Sandbox is scheduled instead of returning immediately.
This is a major release that includes several new features (named Images, version-pinned Function lookups, Sandbox domain allowlists), a new modal skills CLI, and a small number of breaking changes. We're introducing a "named Image" concept, akin to a Modal-native Image registry.
- This release introduces a new "regional routing" concept for Function inputs, which is now in Public Beta. By setting routing_region="..." in the @app.function() or @app.cls() decorators, you can configure the Function to route its inputs through servers in us-west, eu-west, or ap-south instead of us-east.
We've made significant CLI enhancements so that Modal logs can be more accessible to coding agents: The modal app logs and modal container logs commands now have the ability to fetch historical logs using counting (e.g. --tail 1000) or time-based (e.g., --since 4h, --until 2026-03-15, etc.) configuration.
- We're introducing "Directory Snapshots": a new beta feature for persisting specific directories past the lifetime of an individual Sandbox. Using the new methods modal.Sandbox.snapshot_directory() and modal.Sandbox.mount_image(), you can capture the state of a directory and then later include it in a different Sandbox: python notest sb =...
- We've added a new modal billing report CLI and promoted the modal.billing.workspace_billing_report API to General Availability for all Team and Enterprise plan workspaces. We've added modal.Queue.from_id() and modal.Dict.from_id() methods to support referencing a Queue or Dict by its object id. Modal's async usage warnings are now enabled by default.
Modal now supports Python 3.14. Python 3.14t (the free-threading build) support is currently a work in progress, because we are waiting for dependencies to be updated with free-threaded support. Additionally, Modal no longer supports Python 3.9, which has reached end-of-life.
In this release, we're introducing the concept of "App tags", which are simple key-value metadata that can be included to provide additional organizational context.
The Modal platform and SDK.
| Release-notes page | Site | Feed |
|---|---|---|
| Directory Snapshots, GLM modal.com | modal.com | None |
| Go SDK Release Notes modal.com | modal.com | None |
| JS SDK Release Notes modal.com | modal.com | None |
| modal changelog modal.com | modal.com | None |
| Python SDK Release Notes modal.com | modal.com | None |
Releasesby Glyph