Freestyle Key Insights
What is Freestyle?
Freestyle is a cloud VM platform built for managing AI generated code and developer sandboxes. It gives teams full Linux environments that spin up in under 800 milliseconds with real root access and nested virtualisation support. Built on KVM, Freestyle allows you to run Docker containers and even virtual machines inside a VM.
It is ideal for teams building AI coding agents, user facing sandboxes, or browser automation workflows that go beyond basic code execution. The platform offers a first class TypeScript SDK along with pre-built integrations for Node.js, Python, Bun, Ruby, and Java. With features like live VM forking and hibernate to disk, Freestyle tackles the unique challenges of managing code that AI writes rather than humans.
Freestyle lets you clone a running VM without pausing it. This means your AI agent can explore multiple code paths in parallel, all from the same base state. It removes the need to rebuild environments from scratch and saves significant compute time during iterative testing and debugging workflows.
Freestyle provides the backend infrastructure that powers AI app builder platforms like Bolt and Lovable. If you are building a product where users prompt an AI to generate full applications, Freestyle handles the hard parts. It manages the code your AI writes, gives each user isolated environments, and deploys the result. Most new Y Combinator AI app builders are built on this exact architecture.
Freestyle offers purpose built infrastructure for autonomous coding agents. Your AI agents get full Linux environments with root access where they can install packages, run tests, and execute code without restrictions. This goes beyond basic code execution and gives agents a real computer to work on, which is critical for reliable autonomous software development workflows.
For teams running automated pipelines, Freestyle lets you execute custom code inside workflows. You can plug Freestyle environments into your existing automation stack so that each workflow step runs in an isolated VM. This is ideal for CI/CD tasks, data processing jobs, or any pipeline that needs secure and repeatable code execution.
Freestyle's VM product (currently in Beta) delivers fast micro VMs that support full pause and resume. You can hibernate a running VM to disk, stop paying for compute, and bring it back later with the entire memory state intact. This makes it uniquely suited for long running agent sessions that need to pick up exactly where they left off.
The Runs feature provides fast serverless execution for short lived tasks. When you do not need a persistent VM and just want to execute a script or function quickly, Runs handles it with minimal overhead. This gives teams flexibility to choose between long lived VMs and quick fire serverless execution depending on the task.
Freestyle Pricing Plans
| Plan | Cost | Concurrent VMs | Monthly Runs | Usage Included |
|---|---|---|---|---|
| Free | $0 | 10 | 500 | 20 vCPU hrs + 40 GiB hrs daily |
| Hobby | $50/month | 40 | 5,000 | $50 usage included |
| Pro | $500/month | 400 | 500,000 | Custom usage included |
Why Freestyle Stands Out for AI Agent Infrastructure?
Freestyle fills a clear gap in the sandbox market. Most competitors use constrained microVMs or containers that limit what you can do inside the environment. Freestyle gives you a real Linux VM with root access, nested virtualisation, and live forking. For teams building AI coding agents that need to install packages, run Docker, or simulate full production environments, this level of access is essential.
The declarative VmSpec system also brings repeatability to AI generated environments, something that has been missing from the space. If your agents write and deploy code, Freestyle gives them a proper computer to work on.
Pros and Cons
- Full Linux VMs with root access
- Live forking without any downtime
- Hibernate preserves complete VM state
- Nested virtualisation with KVM support
- No GPU support currently
- Smaller community than E2B
Best Freestyle Alternatives
| AI Cloud Sandbox Platform | Live Forking or Cloning | Isolation Method |
|---|---|---|
| E2B | ❌ | Firecracker MicroVMs |
| Daytona | ❌ | Docker/OCI Containers |
| Fly.io | ❌ | Firecracker MicroVMs |
| Vercel Sandbox | ❌ | Firecracker MicroVMs |
