> ## Documentation Index
> Fetch the complete documentation index at: https://docs.novita.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# How do I increase my Novita Sandbox concurrency limit?

> Add account balance to move from Free (5 concurrent sandboxes) to Paid (100). For more than 100, contact Novita for an Enterprise quota (500+).

Add account balance or enable a credit line to move from the Free tier (5 concurrent sandboxes) to the Paid tier (100). If you need more than 100, contact the Novita team for an Enterprise quota, which starts at 500 concurrent sandboxes and can be adjusted.

## Details

| Tier | Concurrent sandboxes | How to get it |
| - | - | - |
| Free | 5 | Default for new accounts |
| Paid | 100 | Add account balance or enable a credit line |
| Enterprise | 500 by default, adjustable | [Contact sales](https://meet.brevo.com/novita-ai/contact-sales) |

* `usage.concurrent_instances` (Python) / `usage.concurrentInstances` (JavaScript) from the quota API shows how many sandboxes currently count toward the limit.
* Total vCPU and RAM in use across running sandboxes are also limited (`concurrentVcpu`, `concurrentRamMb`).
* A request over your quota fails. Creation can also fail if a region has no free capacity, even when your quota isn't used up.

## How to

Check your limits and current usage before launching a large batch:

```python Python icon="python" theme={"system"}
from novita_sandbox.core import Sandbox

quota = Sandbox.get_quota()
print("Limit:", quota.limit)   # concurrent_instances, concurrent_vcpu, concurrent_ram_mb, ...
print("Usage:", quota.usage)
```

```js JavaScript & TypeScript icon="js" theme={"system"}
import { Sandbox } from 'novita-sandbox'

const quota = await Sandbox.getQuota()
console.log('Limit:', quota.limit) // concurrentInstances, concurrentVcpu, concurrentRamMb, ...
console.log('Usage:', quota.usage)
```

Learn more: [Quota Limits](https://docs.novita.ai/guides/sandbox-quota-limit.md)

## Related questions

* [Are paused Novita sandboxes billed?](https://docs.novita.ai/guides/sandbox-faq-paused-sandboxes.md)
* [How much CPU and memory can a Novita Sandbox have?](https://docs.novita.ai/guides/sandbox-faq-cpu-memory.md)
* [Is there a free tier for Novita Sandbox?](https://docs.novita.ai/guides/sandbox-faq-free-tier.md)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.