Celesto launches CI runners nearly 90% cheaper than GitHub Actions, with agent sandboxes
aniketmaurya · x · 2026-10-27
Celesto (backed by Grayscale Ventures) launched as a drop-in replacement for GitHub Actions runners — change one runs-on label, pay nearly 90% less per minute (83% below Blacksmith), with Docker preinstalled and up to 25 GiB cache. It also offers agent sandboxes starting in under 2 seconds and full per-agent cloud computers (shell, browser, desktop) with persistent sessions, driven by a 3-command CLI — aimed at computer-use agents. $5 free credit, no card needed.
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