Your request · the atlas’s suggestions

Places to consider.

A ranked starting point, not a promise. Read the fit, check the caveats, and explore the profiles.

This request and its results are public: they may appear on the homepage and in search engines.

1. 01

   Fast VM

   Excellent fithigh certainty

   Key takeaway

   Hosted VMs that boot in 70ms, well under your 1-second sandbox startup requirement.

   Before you choose

   • The 70ms boot figure is described generically; confirm it holds for your image sizes and concurrency.
   • The facts do not state whether NVIDIA GPU is available, so verify that if needed.
   • Region selection and data residency are not disclosed; default org quota values require authentication to query, so confirm limits before committing.
   Why it fits your request

   The supplied facts state hosted sandbox VMs that boot in 70ms, meeting your must-have of sandbox startup under 1 second; runOptions is hosted-only, matching your hosting preference, and pricing is usage-metered per vCPU-hour with pausing stopping the meter, so budget is flexible with no subscription required.

   Python and TypeScript SDKs, an API, CLI and SSH are listed for interfaces, and snapshots plus managed volumes cover state.

   Explore Fast VM profile
2. 02

   Isorun

   Excellent fithigh certainty

   Key takeaway

   Hosted sandboxes advertised in milliseconds with no hibernated runtime charge.

   Before you choose

   • Millisecond startup is a general claim; confirm it for your workload and concurrency.
   • The facts mention rate and concurrency limits without numeric quotas, so verify those and the default 300s auto-destroy and 30s exec timeouts.
   • Only a TypeScript SDK is listed; check whether that suits your tooling.
   • Whether GPU is available is not stated.
   Why it fits your request

   The supplied facts describe hosted sandboxes in milliseconds, satisfying your under-1-second startup must-have; runOptions is hosted, matching your hosting preference, and pricing is usage-metered per second with no minimums and no hibernated runtime charge, which suits an open budget.

   Forking of filesystem, memory and processes plus durable ext4 disks support repeated sandbox spin-ups, and a credential-injection proxy keeps API keys outside the guest.

   Explore Isorun profile
3. 03

   Northflank

   Excellent fithigh certainty

   Key takeaway

   Hosted microVM sandboxes with sub-second boot for untrusted or agent code.

   Before you choose

   • The platform is broad (services, jobs, GPU, addons), so confirm microVM sandbox boot time and concurrency for your use case, especially in your chosen region.
   • Whether memory or process snapshots exist is not stated; only filesystem container snapshots and database forks are described, and some snapshot and BYOC sandboxing capabilities are listed with future dates.
   • Default sandbox ephemeral storage is lost on pause unless a volume is attached.
   Why it fits your request

   The supplied facts list hosted Sandboxes (microVM, untrusted/agent code) with sub-second boot, meeting your under-1-second startup must-have; hosting is hosted, and pricing is usage-based per second with a free Sandbox tier and no seat pricing, so an open budget works.

   Persistent volumes, RWX volumes mounted in microVM guests, and container snapshots plus database forks support sandbox state, with egress allow/deny rules and secret management.

   Explore Northflank profile
4. 04

   Zeroboot

   Excellent fithigh certainty

   Key takeaway

   Hosted sub-millisecond VM sandboxes via copy-on-write forking for agent code.

   Before you choose

   • Pricing is described only as managed API early access with no public rates or billing model disclosed, so verify cost against your any budget.
   • The facts do not state that persistent disks, egress controls, or secrets management for workloads exist; credential handling is limited to API-key auth, so confirm whether you need those.
   • Forks are single vCPU with a default 30s timeout and a stated 100 requests/second per API key.
   Why it fits your request

   The supplied facts describe hosted sub-millisecond VM sandboxes via copy-on-write forking for AI agent code execution, which meets your sub-1-second sandbox startup must-have; runOptions include hosted, matching your hosting preference.

   Copy-on-write forking and memory snapshots let you spin up many sandboxes from a template, and Python and TypeScript SDKs plus CLI and API are listed.

   The project is Apache-2.0 open-core with source-build self-hosting.

   Explore Zeroboot profile
5. 05

   AWS Lambda MicroVMs

   Excellent fithigh certainty

   Key takeaway

   Hosted Firecracker microVM sandboxes with near-instant launch and resume.

   Before you choose

   • The facts say near-instant launch and resume but do not give a numeric startup figure below 1 second, so confirm boot time for your image and version.
   • Sessions are capped at 8 hours total including suspended time, and there is no arbitrary live fork API, only pre-initialized image snapshots.
   • Regions are AWS-selected; confirm jurisdiction and quotas (for example per-account/region memory) for your account.
   Why it fits your request

   The supplied facts describe hosted Firecracker microVM sandboxes with isolated snapshots, near-instant launch and resume, and a technology background known for very fast startup, which meets your under-1-second must-have; runOptions is hosted, matching your hosting preference.

   Pricing is usage-metered compute, snapshots and data transfer, with suspended instances incurring no compute charge, suiting an open budget, and Python and TypeScript SDKs, CLI, API and Dockerfile are listed.

   Explore AWS Lambda MicroVMs profile