Prime Sandboxes alternatives
The 6 alternatives below are grouped by kind of sandbox, and each says what it does differently from Prime Sandboxes. Start from whatever made you look: missing GPUs, session limits, self-hosting, pricing or isolation.
Why teams look beyond Prime Sandboxes
A low-cost, RL-oriented microVM sandbox with strong networking and checkpoint features, best for Python-centric teams running rollouts at scale.
- Hypervisor, regions and compliance are not documented
- Only a Python SDK (plus CLI and API); no TypeScript SDK
- GPU sandboxes are not yet available
- No free tier published
Prime Sandboxes alternatives, by kind
Hosted sandbox platforms
SDK-driven sandboxes you create, run code in and destroy through an API.
Daytona
Stateful sandboxes for AI-generated code — Linux containers, Linux and Windows VMs, macOS and GPU sandboxes — with snapshots, volumes and preview URLs.
- Containers or VMs
- BYOC
- GPU
- Pause/resume
How it differs: Long-lived, stateful agent workspaces that need many SDK languages, GPUs, or Windows and macOS sandboxes. The strongest choice for stateful coding-agent workspaces and breadth of sandbox types; note the shift away from open source.
E2B
Open-source cloud sandboxes for AI agents, each a Firecracker microVM, with pause/resume, snapshots and forking.
- Firecracker microVM
- Open source
- Self-hostable
- BYOC
- Pause/resume
How it differs: Code interpreters and short-to-medium-lived agent tasks that need microVM isolation, with an open-source self-host path. The safe default for most agent builders: mature, open source, microVM-isolated and widely supported.
Novita Agent Sandbox
Pay-per-second stateful sandboxes from the Novita GPU cloud, with pause/resume, snapshots, templates and secrets, billed by vCPU-second and GiB-second.
- Not documented
- Pause/resume
How it differs: Cheap per-second code execution and browser-agent runs with pause/resume on a single US region. An inexpensive, well-documented lifecycle on an undocumented isolation boundary, best for cost-sensitive US workloads.
Persistent VMs and agent computers
Full, long-lived virtual machines that an agent keeps, forks and returns to.
Morph Cloud
VM-based cloud computers for AI agents built on “Infinibranch” snapshot, branch and restore, plus persistent Devboxes.
- VM
- Pause/resume
How it differs: Workloads that branch a running environment many times — parallel search, RL and evaluation rollouts. Purpose-built for branching workloads; a specialist pick for search, RL and evals.
Compute platforms with sandboxes
General serverless or app platforms that also offer sandboxes, often with GPUs.
Lightning AI Sandbox
Isolated, programmatic Linux sandboxes on the Lightning AI platform with Python and TypeScript SDKs, a CLI, filesystem snapshots and optional Docker-in-sandbox.
- Not named (isolated Linux env)
- BYOC
- Pause/resume
How it differs: Teams already on Lightning AI who want agent sandboxes next to their Studios and GPU jobs. A capable SDK-driven sandbox for Lightning AI users, held back by undocumented isolation and the absence of a dedicated rate card.
Modal Sandboxes
Sandboxes on Modal’s serverless compute platform for running untrusted code at very high scale, with GPUs, snapshots and tunnels.
- gVisor or VM
- GPU
- Pause/resume
How it differs: High-concurrency and GPU-backed sandboxes — RL rollouts, evals and coding agents at scale. The best fit when scale or GPUs matter most, especially for teams already on Modal.
Prime Sandboxes vs alternatives
| Sandbox | Isolation | Open source | Self-host / BYOC | Cold start (vendor) | Max session | Snapshots / pause | GPU | SDKs |
|---|---|---|---|---|---|---|---|---|
| Prime Sandboxes | microVM, own kernel | No | No / No | Not documented | 60 min default, unlimited | Yes / Yes | No | Python, CLI, REST API |
| Daytona | Containers or VMs | No | Not documented / Yes | <90 ms | Unlimited | Yes / Yes | Yes | Python, TypeScript, Ruby, Go, Java |
| E2B | Firecracker microVM | Yes | Yes / Yes | Not documented | 1 h / 24 h (Pro) | Yes / Yes | No | Python, JavaScript/TypeScript |
| Lightning AI Sandbox | Not named (isolated Linux env) | No | No / Yes | ms (claimed) | Not documented | Yes / Yes | No | Python, JavaScript/TypeScript, CLI |
| Modal Sandboxes | gVisor or VM | No | No / Not documented | <1 s | Up to 24 h | Yes / Yes | Yes | Python, JavaScript/TypeScript, Go |
| Morph Cloud | VM | No | No / Not documented | <250 ms (restore) | Configurable | Yes / Yes | Not documented | Python, TypeScript |
| Novita Agent Sandbox | Not documented | No | No / No | <200 ms (claim) | 1 h free / 24 h paid | Yes / Yes | No | Python, JavaScript/TypeScript, CLI |
Frequently asked questions
What are the main alternatives to Prime Sandboxes?
Is there an open-source alternative to Prime Sandboxes?
Cite this page
Agent Sandboxes. (2026). Prime Sandboxes alternatives. agentsandboxes.org. Last reviewed November 9, 2026. https://agentsandboxes.org/alternatives/prime-intellect-sandboxes/
Found an error or a missing sandbox? Submit a correction — every entry links to the sources it relies on.