Freestyle: Finally, a Sandbox That Treats Coding Agents Like First-Class Citizens
Every coding agent needs somewhere to run. But until now, the options have been either a flimsy container that can not do real work, or spinning up a full EC2 instance that takes forever and costs a fortune. Freestyle just launched on Hacker News today and nails the middle ground that the agent ecosystem has been missing.
Freestyle gives each coding agent a full Linux VM with real root access, systemd, Docker, even nested KVM, and it provisions in under 700 milliseconds. That is not a typo. Sub-second from API call to a running machine. The founders, Ben and Jacob, moved to bare metal infrastructure because cloud provider margins made it cheaper to own hardware outright. Smart call.
The killer feature is live forking. You can clone a running VM including its full memory state in about 400ms using copy-on-write, without even pausing the original. Think of it like git branch but for an entire running computer. An agent exploring two possible solutions can fork the sandbox and try both in parallel. And when the agent is done, you hibernate the VM at zero cost. No ticking meter while the machine sits idle.
Freestyle is backed by Y Combinator, Floodgate, Two Sigma Ventures, and Hustle Fund. Customers already include Onlook, Wordware, HeroUI, and several others building agent-powered products. There is a free tier, no credit card needed.
https://www.freestyle.sh/
The sandbox layer for coding agents has been embarrassingly underdeveloped compared to the models themselves. E2B and Daytona cover containers. Fly Sprites comes close. But Freestyle is the first to offer full VM capabilities with agent-native primitives like forking and hibernation. If agents are the new developers, Freestyle is their dev machine.
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Freestyle gives each coding agent a full Linux VM with real root access, systemd, Docker, even nested KVM, and it provisions in under 700 milliseconds. That is not a typo. Sub-second from API call to a running machine. The founders, Ben and Jacob, moved to bare metal infrastructure because cloud provider margins made it cheaper to own hardware outright. Smart call.
The killer feature is live forking. You can clone a running VM including its full memory state in about 400ms using copy-on-write, without even pausing the original. Think of it like git branch but for an entire running computer. An agent exploring two possible solutions can fork the sandbox and try both in parallel. And when the agent is done, you hibernate the VM at zero cost. No ticking meter while the machine sits idle.
Freestyle is backed by Y Combinator, Floodgate, Two Sigma Ventures, and Hustle Fund. Customers already include Onlook, Wordware, HeroUI, and several others building agent-powered products. There is a free tier, no credit card needed.
https://www.freestyle.sh/
The sandbox layer for coding agents has been embarrassingly underdeveloped compared to the models themselves. E2B and Daytona cover containers. Fly Sprites comes close. But Freestyle is the first to offer full VM capabilities with agent-native primitives like forking and hibernation. If agents are the new developers, Freestyle is their dev machine.
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