Core vs Cloud
PreviewShips in the preview channel only. Not a stable release.
Side by side. Where the answer is no, it says no.
| Harmony Core | Harmony Cloud | |
|---|---|---|
| Runs on your machine | Yes | Yes — Cloud adds hosted workspaces, it does not replace local |
| Price | Free, forever | One paid plan, on the pricing page |
| Account required | No | Yes, for the cloud features only |
| Keeps running when the laptop sleeps | No | Yes, until you pause it |
| Your provider API keys | On your machine, used directly | Never held by Harmony; you sign the agent in inside the workspace |
| Running an agent inside the workspace | n/a | Yes — Claude Code or Codex CLI, on your own subscription |
| Who pays for model usage | You, to your provider | You, to your provider. Harmony sells the machine, not the tokens |
| Code leaves your machine | Never | Only what you send, after reviewing it; credential files are refused |
| Terminal into the environment | Local | Scoped per device and workspace; revoked on pause |
| Prompt queue | Local session | Server-held, drains in order while you are away |
| Bring the work back | n/a | Divergence-aware; never overwrites local changes |
| Uptime commitment | Not applicable | None published yet — see Reliability |
| Cancel | n/a | Any time, on the website; access until the paid period ends |