coldtally

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KERNEL cloud browser

Per second of active runtime only. A browser enters Standby 5 s after its last CDP / Live View activity and stops accruing cost.

Cost / browser-agent task
$0.003
One 3-minute cloud browser session, headless where the provider prices it separately, with no proxy, CAPTCHA or LLM costs.
Free tier
Free: $0/mo with $5/month usage credits, 5 concurrent browsers, no credit card.
source ↗ · 2026-10-17
Isolation
Managed cloud Chromium
Unverified: Isolation mechanism not documented on the pricing page.

Rates

ItemRateSourceFetched
Headless browser$0.0000167 /secondkernel.sh ↗2026-10-17
Headful browser$0.000133 /secondkernel.sh ↗2026-10-17
Headful + GPU$0.0008 /secondkernel.sh ↗2026-10-17

Plans

PlanMonthly feeIncludedConcurrencyMax sessionSource
Free$0$5/mo credits5not listedsource ↗
Hobbyist$30$10/mo credits10not listedsource ↗
Start-up$200$50/mo credits150not listedsource ↗

Limits & details

Idle billing
Not billed after 5 s idle (Standby Mode) ↗
SDKs
TypeScript, Python, Go ↗
Pricing page
https://www.kernel.sh/pricing
Terms
https://www.kernel.sh/docs/tos
Last verified
2026-10-17

Not yet verified

Cold start

No Coldtally benchmark runs published yet. For broad speed coverage see ComputeSDK's open benchmarks (MIT-licensed data). Our methodology explains how we use them.

Changes

What changed in agent infra, weekly

Every pricing, plan and limit change we detect for sandboxes and cloud browsers, with sources. One email a week. No vendor-paid content.