// pricing

Pay for what runs,in 10-minute ticks.

No base fee; credits come off as instances run. Every approved event gets 30,000 credits free, and even large events come in under running your own servers on AWS or Google Cloud.

01 pricing

Credits, countedin 10-minute ticks.

All usage is counted in 10-minute ticks and charged in credits. 1 credit = $0.0004, so $10 buys 25,000 credits. New accounts get a sandbox event with 7,500 credits ($3) to try things out, and every event we approve gets 30,000 credits free, which covers a campus-sized CTF outright. There are no seat or platform fees, and on-demand has no minimum spend.

the meter

resourceunitcredits
Memory64 MiB · 10 min1
vCPU (shared)0.25 vCPU · 10 min2
Disk2 GiB per instancefree
beyond that, 12 GiB · 10 min1
Egress20 GB per eventfree
beyond that, per GB (metered every 10 min)varies by region
Image storage10 GiBfree
beyond that, 5 GiB · 10 min1
Ingress, IPv4, TLS, DDoS protectionfree

Each started 10-minute tick is billed. Images are deleted automatically once they go unused for a while after their last use, and storage stops being billed then. In Frankfurt, a 128 MiB / 0.25 vCPU instance costs 4 credits ($0.0016) per tick, and a 512 MiB / 0.5 vCPU instance costs 12 credits ($0.0048).

regions

regioncompute ×egress (cr/GB)
fra1Frankfurt ×1.008
ams1Amsterdam ×1.008
atl1Atlanta ×0.958
icn1Seoul ×1.1568
nrt1Tokyo ×1.1524
sin1Singapore ×1.1524
gru1São Paulo soon×1.40tba

on-demand and reserved

Both plans use the same unit prices. Reserved guarantees capacity for your event window, and reserved capacity is billed whether or not it is used.

On-demand Reserved
Unit price Same Same
Capacity Best effort, queued at peak Held on specific hosts for your window
Commitment None Min. 24 h, min. 125,000 credits ($50)
Booking Instant At least 72 h before start
Unused capacity Not billed Billed
Above the reservation — Billed as on-demand
Cancellation — Free until 72 h before start

02 estimate

Enter your event sizeto estimate the cost.

presets
memory per instance
vCPU per instance

ESTIMATE icn1 · On-demand

instances started
4,500
10-min ticks
27,000
credits per tick
12 × 1.15
compute
372,600 cr
egress
1,360 cr
free credits
−30,000 cr
total $138

343,960 credits · 1 cr = $0.0004

About 94 instances running on average, up to ~282 right after the start.

For the first few hours, reserving about 141 GiB / 141 vCPU is a safe choice.

Rough estimate. Instance starts are assumed to cluster early, so peak is set at 3× the average. During the event, actual usage is shown in the dashboard.

running it yourself

List-price cost of hosting the same event on your own servers: sized for the peak, kept running for the event plus a day of setup and testing, with CPU shared at the same ratio as ours.

chall.run microVM per instance, operations and on-call included
$138
AWS EC2 m7i.4xlarge × 3 · 72 h
$219
Google Cloud n2-standard-16 × 3 · 72 h
$220

List prices as of October 2026. AWS and Google Cloud include egress; disks, load balancers and your own time are left out. Asian regions use Seoul prices.

03 questions

Q.What happens if credits run out during the event?
We'll let you know when your balance is running low. Even if credits run out, running instances won't be stopped on the spot. Billing can wait. The CTF can't.
Q.How do the free credits work?
Every new account gets a sandbox event with 7,500 credits ($3) for trying things out. Register your real event and, once we approve it, it gets 30,000 more, which is enough for a campus-sized CTF. Student and non-profit events that need more can apply for community support.
Q.How do I register an event?
Send a registration request with a short description, the website, the dates and the expected number of teams. We review it and approve it. Until then you can upload challenges and start instances in your sandbox event.
Q.Is testing before the event billed?
Yes, like any other instance time. It comes out of the free credits first, so most testing costs nothing.
Q.How is a multi-region event billed?
Each instance is billed at the multiplier and egress rate of the region it actually ran in. The calculator assumes one region, so a multi-region event will differ a little with the regional mix.

Early access is paused.Reach us by email.

$ contact

We're not taking early-access requests while we get the beta ready. For event plans or any questions, send us an email.

support@quickmetal.kr send an email →