Replicas

Replicas is a cloud coding agent for engineering teams who want to hand off work to Claude Code, Codex, or another harness without tying up a laptop. Each task runs inside a sandboxed virtual machine, which lets teams parallelize many agents at once , and agents run in isolated VMs with real dev environments while you bring your own subscriptions and API keys . The pitch of the V3 launch is straightforward for anyone already paying for coding agents: keep the tools and plans you have, move execution off your machine, and get pull requests back. V3 focuses on flexibility and cost. You can delegate from Slack, Linear, a desktop app, or a phone, so tasks start where the work is already discussed rather than in a separate console. The Linear integration turns issues into active agent runs, reading the ticket, gathering context, and starting implementation without another handoff , and the release adds proactive behavior so agents can pick up work rather than waiting to be prompted for every step. For teams evaluating Devin, Cursor background agents, or rolling their own harness on top of Codex, the differentiator here is being harness agnostic and letting existing subscriptions carry the compute cost. The company is a Y Combinator startup (batch P26) led by Connor Loi as co-founder and CEO, with Saai Arora as CTO who joined after the initial YC application . Loi has described starting Replicas as a dev tool for his own work and an experiment in what cloud coding agents could become , which is worth noting for operators tracking how the current wave of background-agent products is shaping up heading into 2026.