A Vercel sandboxAn isolated environment where AI-generated code or agent actions run without being able to touch anything real.Full definition → Drive supports only one read-write mount at a time; once written to, other sandboxes can read it concurrently only via point-in-time, read-only snapshots that exclude later writes.
Each sandbox can mount up to four Drives at separate paths; Drives default to a 1 TiB size cap (1 GiB on the Hobby plan) and can be configured up to 16 TiB by request.
A Drive is pinned to the region where it was created, and any sandbox mounting it must run in that same region, with no failover-region fallback.
In the iad1 region, Drive storage costs $0.05/GB-month, reads $0.0015/GB, and writes $0.004/GB; the Hobby plan includes 15 GB of storage and 30 GB each of reads and writes free per month.
Terms in this piece · Glossary
sandbox — An isolated environment where AI-generated code or agent actions run without being able to touch anything real.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
Why it matters
Drives let you persist an AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition →'s workspace, memory, or cached dependencies across separate sandbox runs instead of rebuilding state each time, cutting setup cost for repeated agent tasks.
