Question 1

What does active CPU hour mean?

Accepted Answer

You are billed based on how much CPU your code actually consumes, measured in core-hours. For example, using 100% of 2 cores for one hour costs $0.2, while using 10% of a single core for one hour costs $0.01. When a box is idle with no CPU usage, no charges apply.

Question 2

What happens when a box is idle?

Accepted Answer

After 30 minutes of inactivity, the box is automatically frozen. Storage is preserved, but all running processes are stopped. When a new request comes in, the box wakes up automatically, similar to how AWS Lambda cold-starts on demand. No manual intervention is needed. You are only charged for the CPU time your code actually uses. If the box is idle with no CPU usage, there is no CPU charge. Storage charges still apply at $0.1 per GB per month.

Question 3

What is included in storage billing?

Accepted Answer

Storage is billed at $0.1 per GB per month and includes all data on disk, including snapshots. The maximum storage per box is 10 GB for the Small box type.

Question 4

What are the free tier limits?

Accepted Answer

The free tier includes up to 10 concurrent boxes, 5 CPU hours per month, and $1 of LLM token usage per month. After the token limit, the API returns 400 Bad Request.

Question 5

How does LLM token usage work?

Accepted Answer

Each box includes Upstash-provided LLM token usage for the built-in AI agent. On the Free plan, this is capped at $1 per month. On Pay as you go, the cap is $100 per month. After the limit is reached, you can either contact us to increase it or bring your own key (BYOK) for any LLM provider, which is available on all plans.

Question 6

Can I run more than 100 concurrent boxes?

Accepted Answer

Yes. The default quota for Pay as you go is 100 concurrent boxes. This is a soft limit that can be increased on request, similar to AWS service quotas. Just contact us and we'll raise your limit.

Question 7

Where are boxes hosted?

Accepted Answer

Boxes currently run on AWS us-east-1. We are planning to add more regions soon.

Question 8

Can I use my own Docker container?

Accepted Answer

Yes, custom Docker container support is planned and coming soon.

Capacity
	Free	Usage Based Pricing	Enterprise (Coming Soon)
	Free -	Pay as you go $0.1/ CPU hour	Enterprise Custom
	10	100 (default)	Custom
CPU Cores / Box	2	2	Custom
Memory / Box	2GB	2GB	Custom
Max Storage / Box	10GB	10GB	Custom
CPU Hours / Month	5	Unlimited	Unlimited
	30 minutes	30 minutes	Custom
Runtimes	Node.js, Python, Go, Ruby, Rust	Node.js, Python, Go, Ruby, Rust	Node.js, Python, Go, Ruby, Rust
		Coming Soon	Coming Soon

Price
Monthly Price	Free	None	Custom
	Free	$0.1 / active hour per core	Custom
Memory Price	Free	Free	Custom
Storage Price	Free	$0.1 / GB per month	Custom
	Start Now	Start Now	Contact Us

Pricing

Free

$0

Pay as you go

$0.1

Enterprise

Custom

Compare Plans

Free

-

Pay as you go

$0.1/ CPU hour

Enterprise

Custom

FAQ

Free

$0

Pay as you go

$0.1

Enterprise

Custom

Free

-

Pay as you go

$0.1/ CPU hour

Enterprise

Custom

FAQ

What does "active CPU hour" mean?

What happens when a box is idle?

What is included in storage billing?

What are the free tier limits?

How does LLM token usage work?

Can I run more than 100 concurrent boxes?

Where are boxes hosted?

Can I use my own Docker container?