Northflank vs Fly.io Sprites: which platform fits your requirements?

Northflank and Fly Sprites both offer isolated microVM environments for AI agents and untrusted code, but differ primarily in persistence, infrastructure scope, GPU availability, and deployment options. Fly Sprites uses Firecracker microVMs to provide persistent Linux environments with durable filesystems, automatic pause and wake behavior, checkpoints, agent integrations, and credential-brokering Connectors, but it has fixed 8-vCPU instances, no GPU support, no native full-stack preview orchestration, and runs on Fly.io-managed infrastructure. Northflank provides microVM-backed Sandboxes with ephemeral filesystems by default and optional persistent volumes, configurable resources, GPU-backed workloads, extensive networking, secrets management, enterprise access controls, observability, and support for managed cloud, bring-your-own-cloud, and eligible bring-your-own-Kubernetes deployments. Beyond sandbox execution, Northflank includes services, workers, jobs, databases, queues, workflows, preview environments, and AI-focused Harnesses and Skills, making it suited to teams that need isolated execution within a broader production platform, while Fly Sprites is positioned for developers prioritizing persistent agent and code-execution environments.

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