As of today, December 3, 2025, the default resource class for macOS jobs for all paid plan organizations has changed from macos.m1.medium.gen1 to m4pro.medium.
Quick reminder:
- If you don’t specify a resource class in your configuration, your jobs are already using the faster
m4pro.medium- no action needed. - Per our previous announcement,
m4pro.mediumis priced at 200 credits/min compared to 150 credits/min for the previous default, though faster execution times may offset the higher per-minute rate - see our price list for details. - Your jobs may fail if your configuration specifies an Xcode version that is not available on
m4pro.medium. For these cases, you can update your configuration to specify a resource class that does support the required Xcode version. For more information on which Xcode versions are available on which resources classes, see our documentation. - If your configuration explicitly specifies a different resource class, we recommend updating it to
m4pro.mediumor removing the resource class specification to avoid configuration parsing issues when these resource classes reach their end of life on February 16, 2026.
For full details, see our original announcement.