Active-CPU-billed agent sandboxes: prices at 2 vCPU / 4 GB (Nov 2026)

Active-CPU-billed agent sandboxes: prices at 2 vCPU / 4 GB (Nov 2026)

#	Provider	1 h busy	1 h at 10% CPU	Fleet month	Pay	At once	Starts	Caveats
1	Upstash BoxSmall (2 vCPU / 4 GB) Pay as you go · fleet ≥ $880.00 · 1,000 at once Active-CPU billing Not published: rounding, minimum	≥ $0.1[1]	≥ $0.01	≥ $880.00	Pay as you go	1,000	?	Active-CPU billing Not published: rounding, minimum
2	boxd2 vCPU / 4 GB Prepaid credit · fleet $1,320 Active-CPU billing	$0.15[2]	$0.0654	$1,320	Prepaid credit	?	?	Active-CPU billing
3	Fly.io Sprites2 vCPU / 4 GB Pay as you go · fleet ≥ $1,448 · starts 10/min then refused Active-CPU billing Not published: rounding, minimum	≥ $0.164[3]	≥ $0.0952	≥ $1,448	Pay as you go	?	10/minthen refused	Active-CPU billing Not published: rounding, minimum
4	Cloudflare Sandbox2 vCPU / 4 GB Pay as you go, $5/mo min · fleet ≥ $1,589 Active-CPU billing Not published: rounding, minimum	≥ $0.18[4]	≥ $0.0504	≥ $1,589	Pay as you go, $5/mo min	?	?	Active-CPU billing Not published: rounding, minimum
5	Tensorlake2 vCPU / 4 GB Prepaid credit · fleet ≥ $1,760 · 100 at once Active-CPU billing Not published: minimum	≥ $0.2[5]	≥ $0.074	≥ $1,760	Prepaid credit	100	?	Active-CPU billing Not published: minimum
6	AWS Bedrock AgentCore Code Interpreter2 vCPU / 4 GB Pay as you go · fleet $1,908 · 1,000 at once · starts 1,800/min · 108,000/h · 2,592,000/day then refused Active-CPU billing Max session 8 h	$0.217[6]	$0.0557	$1,908	Pay as you go	1,000	1,800/min · 108,000/h · 2,592,000/daythen refused	Active-CPU billing Max session 8 h
7	Deno Sandbox2 vCPU / 4 GB Plan from $20/mo · fleet not on published plans · 3 at once Active-CPU billing Max session 30 min Not published: rounding, minimum	≥ $0.3[7]	≥ $0.12	Not on published plans	Plan from $20/mo	3	?	Active-CPU billing Max session 30 min Not published: rounding, minimum
8	Vercel Sandbox2 vCPU / 4 GB Pay as you go, $20/mo min · fleet ≥ $2,999 · 10,000 at once Active-CPU billing +$0.0000006 per sandbox Not published: rounding	≥ $0.341[8]	≥ $0.11	≥ $2,999	Pay as you go, $20/mo min	10,000	?	Active-CPU billing +$0.0000006 per sandbox Not published: rounding

Not published, so not listed here: Together Sandbox.

1 h busy: all CPU billed. 1 h at 10% CPU: lower only where idle CPU isn't billed. Fleet month: 50 × 8 h × 22 days busy, on the lowest plan that runs 50 at once (its fee, less usage it includes). At once and Starts: on the terms priced. ≥ = a term isn't published. Method