Cost
/cost-analyticsMonthly spendDaily spend by runnerTop repositoriesSavings ideas
GitHub Actions spend for the selected organization and month: daily spend by runner, where the money goes (top repositories), ways to spend less (estimated from this month's usage) and spend by runner type. Needs the costAnalytics feature.

Billing comes from GitHub's billing APIs, which need a fine-grained token with the organization's Administration: read permission. Per-repository spend is only available where GitHub reports it for the account.