The price of each sandbox size, the free time, the credits, and the price of a weekend of agents at Munito AI and at other providers.
A sandbox pays for each second, for its CPU and its memory. It pays for the higher of its floor and its real use.
- The ceiling is the vCPUs and the memory that the sandbox sees.
- The floor is the smallest share that the sandbox pays for: a quarter of the ceiling.
Sizes
| Preset | Ceiling | Floor | Idle, per hour | Busy at the ceiling, per hour |
|---|---|---|---|---|
small | 1 vCPU, 1 GiB | 0.25 vCPU, 256 MiB | $0.0072 | $0.0288 |
default | 2 vCPU, 4 GiB | 0.5 vCPU, 1 GiB | $0.0162 | $0.0648 |
large | 4 vCPU, 8 GiB | 1 vCPU, 2 GiB | $0.0324 | $0.1296 |
| Resource | Price |
|---|---|
| CPU | $0.0252 per vCPU-hour |
| Memory | $0.0036 per GiB-hour |
| Saved state | $0.0001 per GiB-hour, about $0.073 per GiB-month |
- A create without
sizegets thedefaultsize. - For another size, set
vcpusandmemory_mibin place ofsize. - A preset starts in less than one second. A custom size takes some seconds.
- For a larger root disk, set
disk_gib, for example{"size": "large", "disk_gib": 40}. - To pay for the ceiling all the time, set
"reserved": true. The floor is then the ceiling. - The saved state of a paused sandbox pays the storage price. Data that two saved states share, such as a fork and its parent, counts one time.
- The Sandboxes page of the console shows the vCPU-hours, the GiB-hours and the spend of the month.
Free time and credits
- Each organization gets 25 free hours of a
defaultsandbox at full use, one time. That is the first $1.62 of sandbox usage, so an idle sandbox runs longer for free. - The free time needs no credits.
- After the free time, a sandbox needs credits. Buy credits on the Billing page of the console.
- A sandbox runs after its request ends. Thus, the API checks the credits before it starts or extends a sandbox.
| Code | When the API answers 402 |
|---|---|
credits_low | The credits pay for less than one hour of the largest size, 16 vCPUs and 32 GiB at full use |
credits_used_up | The credits of your organization are used up |
credits_required | Your organization has no credits |
- The API answers these codes to a create and to a new timeout, after the free time is used.
- When the free time and the credits are used up, your running sandboxes stop. Their
end_reasoniscredits. - With automatic top-up on, the sandboxes continue while the top-up can add credits.
Limits
| Limit | Value |
|---|---|
| vCPUs | 1 to 16 |
| Memory | 512 to 32,768 MiB, in steps of 256 MiB. At least 512 MiB for each vCPU |
| Disk | 10 to 100 GiB, set with disk_gib. The default is 10 |
| Life of a sandbox | 10 to 86,400 seconds. The default is 3,600, one hour |
| Time of a command | 1 to 1,800 seconds. The default is 60 |
| Output of a command | 1 MiB for each stream when you wait for the result. truncated is true when the API cuts the output |
| File | 100 MiB |
| Environment | 100 variables. A value is 32 KiB or less |
| Metadata | 16 keys. A key is 64 characters or less, and a value 512 or less |
| Running sandboxes | 100 at once for each organization. Above this limit, a create gets 429 sandbox_limit_reached. Talk to an engineer for more |
| Creates | No limit. API requests from one IP address are limited to 8,000 a minute |
| Public ports | 16 for each sandbox |
| SSH keys | 16 for each sandbox |
| Signed URL | 60 seconds to 7 days. The default is one hour |
Network
- A sandbox has outbound internet access.
- A sandbox cannot reach your other sandboxes or private addresses. It cannot send mail over SMTP.
- For a sandbox with no network, set
"internet": false. - Inbound connections come only through ports and SSH, also with
"internet": false.
A weekend of agents
Agents wait for their models most of the time, so the price of an idle sandbox sets the bill. This table gives the price of 60 sandboxes with 2 vCPUs, 4 GiB and a 10 GiB disk, idle from Friday 18:00 to Monday 09:00 (63 hours). It uses the lowest published usage price of each provider on 2026-10-28, with no plan fee, free tier or credit.
| Provider | The weekend | Multiple |
|---|---|---|
| Munito | $61 | 1x |
| boat | $68 | 1.1x |
| Tensorlake | $140 | 2.3x |
| Cloudflare | $214 | 3.5x |
| Modal | $225 | 3.7x |
| Railway | $263 | 4.3x |
| Vercel | $321 | 5.2x |
| Freestyle | $503 | 8.2x |
| E2B | $626 | 10.2x |
| Daytona | $630 | 10.3x |
| Blaxel | $632 | 10.3x |
| Runloop | $1,210 | 19.8x |
- Munito: an idle sandbox pays its floor, 0.5 vCPU and 1 GiB.
- Tensorlake: the rates of the Pro plan.
- Cloudflare: a container with 2 vCPUs needs 6 GiB of memory or more.
- Modal: the row requests 0.25 core and 1 GiB, the floor of a Munito sandbox.
- Railway: the row prices 1 GiB of memory in use, the memory floor of a Munito sandbox.
- Blaxel: the row prices an active sandbox. A sandbox in standby pays only for its snapshot.