“Stateful systems are incredibly hard to build”: How Perplexity thinks about AI agent sandboxes

Perplexity launched SPACE, a sandbox platform for AI agents that focuses on managing persistent state across long-running sessions. It builds on Firecracker microVMs and Kubernetes but innovates in pausing, resuming, and forking agent sessions using Btrfs for efficient snapshots. This approach supports durable, portable AI agent workloads at scale.