Active CPU, not wall-clock. A sandbox that waits for an LLM response uses almost no CPU, so it costs mostly its memory. A sandbox with 2 vCPU busy at 20% is billed 0.4 vCPU-hours per hour.
Paused costs only storage. A paused sandbox has no CPU or memory charge; you pay for its snapshot until you resume or kill it.
Examples
Per hour, for a sandbox with 2 vCPU and 4 GiB:
The free plan has the same rates with $5 of included credit and the free plan limits. The credential vault is included at no charge.
See Usage and billing for where to see what you used: the dashboard,
anona-compute usage, or GET /v1/usage.