A typical sandbox assumes 4 vCPUs and 16 GB RAM. A typical desktop assumes 1 vCPU and 2 GB RAM plus the live screen. *Kernel bills per browser-second: headless browsers at $0.0000166667/s ($0.060 per hour) and headful browsers at $0.0001333336/s ($0.480 per hour), idle time excluded; the headless rate is used here. CodeSandbox has no 4 vCPU / 16 GB size; its Small VM (8 vCPU / 16 GB) is shown, and its free Build plan publishes no monthly credits, so none are assumed.

Estimate only, at list rates from each provider's public pricing page, retrieved September 23, 2026: docs.getsolari.com/pricing · browserbase.com/pricing · e2b.dev/pricing. Bill = plan fee + usage beyond included monthly credits. Sign-up credits are excluded. "Over limit" means that vendor's free tier cannot buy that many hours. Solari has no hard cap: usage beyond included credits is bought as top-up credits. Proxies, captchas, storage, and taxes excluded. Solari recommends Enterprise at 10,000 total hours per month.