Blaxel

Blaxel provides persistent sandboxes for AI agents that auto-suspend when idle and resume in ~25ms with full memory and filesystem state. Co-host agents, MCP servers, and batch jobs alongside sandboxes on the same backbone for near-zero latency. Supports 50K+ concurrent sandboxes, volumes for long-term file persistence, and enterprise-grade security with per-sandbox microVM isolation. Backed by Y Combinator.