Fly

fly.io/

Fly.io runs cloud infrastructure built around three named products: Sprites, persistent Linux computers for AI agents with automatic checkpointing; Fly Machines, VMs with sub-second boot times for deployed apps; and a managed Postgres service. The homepage repeatedly contrasts Sprites against Machines as a deliberate two-tier model — agent runtime versus deployment target — rather than presenting one undifferentiated product. Its pitch to agent builders is pointed: "Sandboxed isn't sufficient. Give your agent a real computer." Specific figures include 18+ regions, under one second boot time, and a 99.9% uptime SLA, with customer logos from Supabase, Replicate, and Firecrawl reinforcing a developer-to-developer tone rather than enterprise branding.

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Computers for agents · Fly

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Updated

Sep 22, 2026

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