How We Made Cloud Coding Agents Start in Milliseconds

Tembo describes a warm-pool system designed to reduce cloud coding-agent startup delays by preparing project environments before users submit prompts, including cloned repositories, dependencies, credentials, integrations, MCP servers, and agent runtimes. In a single recorded comparison using the same prompt, Tembo reported an app-running time of 2.2 seconds, compared with 26.88 seconds for Devin and 61.25 seconds for Cursor, while noting that models differed across tools. The company distinguishes fast VM snapshot restoration from actual environment readiness, arguing that post-restore tasks such as fetching commits, refreshing tokens, configuring servers, and launching runtimes can still create delays. Its approach uses project definitions and snapshots to create prepared virtual machines in advance, assigns a ready machine to a new session in milliseconds, replenishes capacity after use, and reconciles environments when repositories, credentials, or settings change. Tembo says pools retain one prepared environment per configured size when capacity permits, may briefly lag behind new commits because updates are batched, and revert to ordinary startup if demand exhausts the pool; warm pools are available on Max plans.

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