# Coreload vs Blacksmith
On Coreload you change a job's `runs-on` label, so you can move one job at a time and keep the rest on Blacksmith.

## Coreload, measured against Blacksmith

- At 2 vCPU, Blacksmith's single-thread speed was 0.63× Coreload's and its all-core speed per vCPU 0.87×, the median of 3 runs, measured 2026-11-04.
- Coreload's 2-vCPU runner exposed 3 vCPUs to the job, so these ratios compare per vCPU.

The method, every run and the raw data are on the [benchmarks page](https://coreload.com/benchmarks/). Blacksmith was measured with our
own Blacksmith account.

## Move a job

Install the GitHub App, then change the job's `runs-on` from its Blacksmith label to ours. The
[migration guide](https://coreload.com/migrate/blacksmith/) shows which Blacksmith sizes have a Coreload size today and which are
coming.

[Install the GitHub App](https://github.com/apps/coreload-ci) · [What Blacksmith publishes](https://coreload.com/compare/blacksmith/)

## Other alternatives

Each link opens a page that quotes the provider's own pages, with a link to each page and the date we read it.

- **GitHub-hosted runners:** [what GitHub publishes](https://coreload.com/compare/github-hosted/).
- **Namespace:** [what Namespace publishes](https://coreload.com/compare/namespace/).
- **Depot:** [what Depot publishes](https://coreload.com/compare/depot/).
- **RunsOn:** [what RunsOn publishes](https://coreload.com/compare/runson/).

## Questions

- **Where are the Coreload and Blacksmith measurements?** On this page, at each size both were run at, and on the
  [benchmarks page](https://coreload.com/benchmarks/) with the method, every run and the raw data.
- **How do I move from Blacksmith?** Change `runs-on` on one job and keep the rest where they are; the
  [migration guide](https://coreload.com/migrate/blacksmith/) shows which sizes map today.