Compare every kind of
sandbox, neutrally.
From AI-agent code runtimes to Salesforce orgs to regulatory test regimes — one word, three universes. We track the specs, pricing and cold-start numbers so you don't have to trust a vendor's own blog.
AI Agent & Code-Execution Sandboxes
Ephemeral, secure runtimes — microVMs and containers — that spin up in milliseconds so agents and apps can execute generated code safely. Compared on cold start, isolation, pricing, GPU, persistence and SDK support.
Browse AI → 7 trackedEnterprise, Cloud & API Sandboxes
Vendor-provided sandboxes for building against a platform without touching production — Salesforce and ServiceNow orgs, cloud learning accounts, and payment/fintech API test environments like Stripe, Plaid and Mastercard.
Browse Enterprise, → 3 trackedRegulatory & Fintech Sandboxes
Programs run by regulators (and the platforms that support them) that let firms trial innovative financial products with real customers under a controlled, time-limited regime.
Browse Regulatory →The comparisons people actually run
AI-agent code sandboxes
The fastest-moving category — secure runtimes where agents execute generated code. Ranked and compared on the specs that decide the bill.
E2B
E2B is a Firecracker-microVM sandbox that gives AI agents a secure, ~150ms-cold-start environment to run generated code, with pause/resume and filesystem snapshots.
Daytona
Daytona is an open-source, container-isolated sandbox for AI agents with sub-90ms creation, persistent stateful workspaces, mid-execution snapshots and optional H100 GPUs.
Modal
Modal is a Python-first serverless compute platform whose Sandboxes offer gVisor isolation, sub-second cold start and — uniquely — GPUs (T4 through B200) inside the sandbox.
Vercel Sandbox
Vercel Sandbox is a Firecracker-based, JavaScript/TypeScript-native sandbox that is persistent by default, billed on active CPU plus a per-creation fee.
Cloudflare Sandbox SDK
Cloudflare Sandbox SDK runs code on Cloudflare Containers + Durable Objects, blending V8 isolates (sub-50ms) with containers, bundled into the Workers Paid plan.
Northflank
Northflank runs sandboxes with selectable Kata/gVisor microVM isolation, unlimited session duration, any OCI image and BYOC deployment — at the lowest published vCPU rate in the category.
Hard numbers
Cold start, $/vCPU-hr, session caps, GPU — measured and dated, not marketing adjectives.
No vendor bias
Every top result today is a vendor ranking itself #1. We're the referee, not a player.
Always current
A fast category. Each data point carries a "last verified" date and a link to the primary source.
Every sandbox worth knowing, once a month.
The refreshed benchmark, pricing changes, new entrants and one sharp take. Read by engineers choosing where their agents and apps run. No fluff.