arm64
What changes when moving from x64 to arm64?
Quick answer
Native modules, Python wheels, and any x86 assembly need aarch64 support. Most mainstream dependencies now have it.
The detail that matters
Run the full test suite on arm64 before switching production. The failures that appear are usually in transitive native dependencies.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
Can GitHub Actions run arm64?Yes. GitHub offers arm64 runners on paid plans, and managed providers including runnerhut offer them on all plans.Can I build arm64 images on an x64 runner?Yes, with QEMU — but it is 5–40× slower than building natively.Can I run arm64 and x64 jobs in the same workflow?Yes. Use a matrix with a different runner label per architecture.Do arm64 runners support buildx?Yes, and on native arm64 hardware buildx produces arm64 images with no emulation.