A private Linux box for your AI agent that keeps running day and night, also when you close your laptop. You pay per second from a prepaid balance, and never more than the monthly cap.
Install with one click:
As of November 2026, an AI agent box with 2 vCPU, 4 GB RAM and 20 GB disk costs $0.0075 per running hour at ServerPrism, and never more than $5.48 a month. That is less than every always-on option in our price comparison below, where each price links to the provider's own pricing page. How our prices compare
Pick an agent and we install it in your box when it first starts, at a version we have tested. Your keys and accounts stay yours, and you can switch to another template on the Agent tab at any time.
Template: Hermes Agent. Pick a template, then a size below. See prices
Compute is billed per second while your box runs. Storage is billed while the box exists, also when it is stopped. A month never costs more than the cap.
Chat agents and bots
1 vCPU, 2 GB RAM, 10 GB disk
At most 2.74 USD a month
Too small for the template you picked.
Coding agents and light browser use
2 vCPU, 4 GB RAM, 20 GB disk
At most 5.48 USD a month
Too small for the template you picked.
Browser automation and bigger builds
4 vCPU, 8 GB RAM, 40 GB disk
At most 10.97 USD a month
Too small for the template you picked.
Rates in USD: 0.001 per vCPU-hour, 0.00088 per GB of RAM per hour, 0.0001 per GB of disk per hour.
For an agent box that runs around the clock, ServerPrism has the lowest published price of the providers we compared: 2 vCPU, 4 GB RAM and 20 GB disk for $5.48 a month ($0.0075 per running hour), billed per second. Prices are from each provider's own pricing page, checked between 5 November 2026 and 6 November 2026. Providers that bill only active CPU time and pause idle boxes, such as Upstash Box, can cost less for agents that are idle more than about 97% of the time.
Each name links to that provider's own pricing page.
| Provider | Per hour running | Always on, per month | Plan fees and notes |
|---|---|---|---|
| ServerPrism | $0.00752 | $5.48 | No plan fee and no minimum. Billed per second, never more than the monthly cap. |
| Agent37 | $0.00844 | $6.16 | Their 2 vCPU / 4 GB size allows up to 12 GB disk; 20 GB is priced at their own per-GB rate. |
| Upstash Box (Fixed keep-alive) | $0.01096 | $8.00 | A flat $8 a month per box, with no usage charges. Their 2 vCPU / 4 GB size has at most 10 GB of disk, so this price is for 10 GB, not 20 GB. |
| boat.dev | $0.0180 | $13.14 | $20 a month minimum, which counts toward usage. Fixed size with 51 GB disk. |
| InstaBox | $0.0192 | $14.02 | Needs a paid plan (Pro, $20 a month) that counts toward usage. |
| Upstash Box (pay as you go, pauses when idle) | $0.0200 to $0.2000 | Pauses when idle | Only busy CPU time is billed and memory is free: $0.02 an hour at 10% CPU, up to $0.20 at full use of both cores. Pauses after 6 hours without activity and stops running programs until the next request, so an agent that must stay on needs the keep-alive plan. Their 2 vCPU / 4 GB size has at most 10 GB of disk, so this price is for 10 GB, not 20 GB. |
| Koyeb | $0.0288 | $21.02 | Fixed size with 20 GB disk. |
| Northflank | $0.06985 | $50.99 | No plan fee or minimum. |
| Vercel Sandbox | from $0.08617 | from $62.90 | CPU is billed only while busy: shown with an idle CPU, the lowest it can be. Needs a paid plan (Pro, $20 a month) that counts toward usage. A sandbox runs at most 24 hours at a time. |
| Novita Sandbox | $0.11664 | $85.15 | A sandbox runs for a few hours at a time (their pages say 3 or 24 hours) unless their long-running mode is turned on. |
| E2B | $0.1656 | $120.89 | Needs the Pro plan at $150 a month for this size. A sandbox runs at most 24 hours at a time. |
| Daytona | $0.16722 | $122.07 | No plan fee or minimum. |
| Modal Sandboxes | $0.23796 | $173.71 | A sandbox runs at most 24 hours at a time. No lasting disk in the sandbox itself. |
ServerPrism
Per hour running$0.00752
Always on, per month$5.48
No plan fee and no minimum. Billed per second, never more than the monthly cap.
Per hour running$0.00844
Always on, per month$6.16
Their 2 vCPU / 4 GB size allows up to 12 GB disk; 20 GB is priced at their own per-GB rate.
Per hour running$0.01096
Always on, per month$8.00
A flat $8 a month per box, with no usage charges. Their 2 vCPU / 4 GB size has at most 10 GB of disk, so this price is for 10 GB, not 20 GB.
Per hour running$0.0180
Always on, per month$13.14
$20 a month minimum, which counts toward usage. Fixed size with 51 GB disk.
Per hour running$0.0192
Always on, per month$14.02
Needs a paid plan (Pro, $20 a month) that counts toward usage.
Per hour running$0.0200 to $0.2000
Always on, per monthPauses when idle
Only busy CPU time is billed and memory is free: $0.02 an hour at 10% CPU, up to $0.20 at full use of both cores. Pauses after 6 hours without activity and stops running programs until the next request, so an agent that must stay on needs the keep-alive plan. Their 2 vCPU / 4 GB size has at most 10 GB of disk, so this price is for 10 GB, not 20 GB.
Per hour running$0.0288
Always on, per month$21.02
Fixed size with 20 GB disk.
Per hour running$0.06985
Always on, per month$50.99
Per hour runningfrom $0.08617
Always on, per monthfrom $62.90
CPU is billed only while busy: shown with an idle CPU, the lowest it can be. Needs a paid plan (Pro, $20 a month) that counts toward usage. A sandbox runs at most 24 hours at a time.
Per hour running$0.11664
Always on, per month$85.15
A sandbox runs for a few hours at a time (their pages say 3 or 24 hours) unless their long-running mode is turned on.
Per hour running$0.1656
Always on, per month$120.89
Needs the Pro plan at $150 a month for this size. A sandbox runs at most 24 hours at a time.
Per hour running$0.16722
Always on, per month$122.07
Per hour running$0.23796
Always on, per month$173.71
A sandbox runs at most 24 hours at a time. No lasting disk in the sandbox itself.
Compared for 2 vCPU, 4 GB RAM, 20 GB disk. Prices checked between 5 November 2026 and 6 November 2026 from each provider's own pricing page, excluding free tiers and credits, USD before tax. Per hour includes the disk for that hour. Always on means 730 hours running, disk included. Our row uses our current rates. Plans that bill only busy CPU time are shown as a range and do not count as always on. Some providers include extras such as more disk or free traffic.
Any agent that runs on Linux with Node.js or Python as a normal user. Popular choices are OpenClaw, Hermes Agent, Claude Code, Codex and OpenCode, and most of them install with npm, pip or uv.
Pick one of the templates above, or start with a blank box and install any agent that runs on Linux with Node.js or Python as a normal user. An agent that needs root, Docker or a GPU will not run here.
Every box follows our AI Agent Acceptable Use Policy. Read the policy
Yes. A box stays on until you stop it, also when you close the browser or switch off your computer, so a bot can answer at 3 am. A box that runs all month costs about the always-on figure for its size, and never more than the cap.
While your box is running we count its vCPU and RAM by the second, and disk for every second the box exists. Starting up and shutting down are not billed. Usage is taken from your prepaid balance about every five minutes, rounded down to the cent, and a box never costs more than its monthly cap.
We email you when it runs low and again when it is empty. Your agents keep running for another 24 hours, then we stop them. Your files stay, and you can start them again right after a top-up. If a box stays stopped with an empty balance for 14 days, we delete it with its files and backups. We email you 3 days before that, and a top-up before then keeps everything. If you don't see our emails, please check your spam folder.
Yes. Pick the OpenClaw template and your box installs it on first start, with its web page on an HTTPS address that only you can open while signed in. You add your model key on the Agent tab or in OpenClaw itself. A feature that needs root or Docker will not work here.
Yes. Pick the Claude Code or Codex CLI template and your box installs it on first start. Sign in with your own account or save your API key on the Agent tab, then start it in the browser terminal. It keeps running in its terminal session after you close the tab. Claude Code needs a paid Claude plan or an Anthropic API key, Codex a ChatGPT plan or an OpenAI API key.
Claude Code, OpenClaw, Codex CLI, Hermes Agent, Gemini CLI, OpenCode, goose, Aider, OpenHands. Or start with a blank box and install your own agent in the terminal.
Yes. Your box can connect out to the internet like any server, so a bot can talk to Telegram, Discord or WhatsApp as usual. If a service needs to call your bot with a webhook, give its port an HTTPS web address with a key on the Agent tab.
Not for most agents. A VPS is a whole server that you set up and look after yourself. An AI agent box comes ready with Node.js, Python and a browser terminal, is billed per second and is walled off in its own sandbox. If your agent needs root or Docker, a VPS is the better choice.
E2B and Daytona sell short-lived sandboxes that developers start from their own code through an API, often for a few minutes at a time. An AI agent box is one box that stays on, with a terminal, files and web addresses, for an agent that runs day and night. We do not offer an API to create boxes from code.
Yes. Stop your box, then pick another size on its Agent tab. Your files stay as they are and the new size applies the next time it starts. You pay the new rates from that second, and in a month with a change the cap follows the time spent on each size. To move to a smaller size, the files in your box must fit on its disk.
Yes. Each agent runs in its own gVisor sandbox with its own network rules. It cannot see other customers, our own systems or private networks.
In a file inside your own box, which only you can open. You can save a key on the Agent tab: it goes straight into your box and we never store it. Agent boxes are left out of our own backups.
Yes, any time, on its Agent tab. You type the name of the box to confirm, and it is deleted at once with its files and its backups. Billing stops that second, and your AI agent balance stays on your account.
No, the AI agent balance is not refundable. It stays on your account, also after you delete a box, and you can use it for a new box at any time.
Checkout shows the locations where AI agent boxes are available. We are starting with a few and adding more.
No. Our AI agent rates are already as low as we can make them, so discount codes and offers do not apply to boxes or balance top-ups. You always pay the rates shown on this page.