Fly.io Launches Sprites.dev Sandbox Environments With Checkpoints
On January 9, 2026, Fly.io launched Sprites.dev, a persistent, checkpoint-capable developer sandbox and JSON API for running untrusted code. Sprites provide SSH access to 8GB/8‑CPU VMs, NVMe-backed persistent storage with ~300ms checkpoints (last five retained), Claude Skills integration, Go and TypeScript SDKs, and scale-to-zero billing (Fly estimates $0.46 for a four-hour coding session). The product targets secure coding-agent workflows and server-side sandboxing.
Scoring Rationale
Official Fly.io product launch offers practical sandboxing and checkpoint features, but primarily serves developer workflows rather than enterprise-wide platform shifts.
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