Linux x64 Runners
Bare-metal Linux x64 GitHub Actions runners on 5th Gen AMD Ryzen processors, running the official GitHub Actions runner images.
Tenki's x64 runners use 5th Gen AMD Ryzen processors with a 1:2 physical-to-virtual core mapping: each pair of vCPUs corresponds to a single physical core, which keeps compute performance consistent and predictable between runs.
Sizes run from 2 vCPU / 4 GB up to 16 vCPU / 32 GB, with larger configurations available on request. Starter workspaces are capped at 2 vCPU / 4 GB, or 4 vCPU / 8 GB with a payment method on file. See Runner Sizes & Labels for labels and specifications, and Limits & Concurrency for per-plan limits.
Image
Linux runners use the official GitHub Actions runner images from actions/runner-images, with Ubuntu 24.04 as the default. Anything that runs on GitHub-hosted ubuntu-latest runs on Tenki with no changes, with the same toolchains on the same version cadence. See Runner Images for details and custom images.
Every job is a fresh VM
Each job runs in its own single-use VM with its own kernel, destroyed when the job ends. Nothing is shared or reused between jobs or customers; see Security & Isolation.