How much does an idle c7i.large cost on AWS?
A c7i.large billed on-demand and left running around the clock costs about $65/mo at its cheapest listed region (us-east-1). Scheduling it off outside business hours cuts that to roughly $19/mo — a $46/mo saving.
Cheapest on-demand
$0.0892/hr
us-east-1
Running 24/7
$65/mo
730-hour month
Business-hours savings
$46/mo
70% off the 24/7 bill
Price by region
| Region | Hourly (on-demand) | Spot (typical) | ≈ Monthly (24/7) |
|---|---|---|---|
| us-east-1 Cheapest | $0.0892/hr | $0.0348/hr | ≈ $65/mo |
| us-east-2 | $0.0892/hr | $0.0223/hr | ≈ $65/mo |
| us-west-2 | $0.0892/hr | $0.0348/hr | ≈ $65/mo |
| ap-south-1 | $0.0892/hr | $0.0384/hr | ≈ $65/mo |
| eu-west-1 | $0.0958/hr | $0.0508/hr | ≈ $70/mo |
| eu-central-1 | $0.1018/hr | $0.0387/hr | ≈ $74/mo |
| ap-southeast-1 | $0.1029/hr | $0.0453/hr | ≈ $75/mo |
| ap-northeast-1 | $0.1124/hr | $0.0416/hr | ≈ $82/mo |
| ap-southeast-2 | $0.1166/hr | $0.0513/hr | ≈ $85/mo |
| sa-east-1 | $0.1376/hr | $0.0275/hr | ≈ $100/mo |
What a schedule saves
| Schedule | Monthly cost | Savings vs 24/7 |
|---|---|---|
| Running 24/7 | $65/mo | baseline |
| Weekdays only (off on weekends) | $47/mo | -$19/mo (29%) |
| Business hours only (10×5) | $19/mo | -$46/mo (70%) |
Assumes a 730-hour month at on-demand list price. Actual savings depend on when the instance is actually used.
About the c7i family
C7i is the current-generation Intel Sapphire Rapids compute-optimized family, the fastest per-vCPU option in the C-line for CPU-bound batch, encoding, and simulation workloads. New CI fleets and performance-test rigs increasingly start here rather than migrating up from C5/C6i. Newer and faster doesn't mean busier though — most build agents still spend the majority of the week waiting for a job, not running one.
Regional pricing varies: c7i.large runs $0.0892/hr in us-east-1, the cheapest region priced here, versus $0.1376/hr in sa-east-1, the priciest — a 35% spread across regions for the identical instance type.
The next size up in the same family, c7i.xlarge (4 vCPU / 8 GB RAM), costs about $130/mo running 24/7 at its cheapest region — roughly 100% more than c7i.large's ~$65/mo — for 2x the vCPU.
Common questions
How much does an idle c7i.large cost per month?
At the cheapest listed region (us-east-1), a c7i.large costs $0.0892/hr, or about $65/mo if it runs 24/7. That's the on-demand list price — an idle instance costs exactly the same as a busy one, since cloud billing doesn't know the difference.
How much can I save by scheduling it off outside work hours?
Restricting it to business hours only (10×5) saves about $46/mo (70%) versus running 24/7. A lighter schedule — on around the clock on weekdays, off on weekends — still saves about $19/mo (29%).
Does a faster family like c7i reduce my bill?
Only if the speed converts into fewer instance-hours. The hourly rate is similar to c6i, so a batch job that finishes sooner on hardware that then stops is a real saving — while the same box left running simply idles faster. Pair generation upgrades with an explicit off-schedule.
Other c7i sizes
Stop paying for idle AWS servers
Idlefy runs a free audit of your fleet, then flips dev servers to stopped-by-default: lease one when you need it, and
when the lease ends it shuts itself off — stop, not terminate, persistent disks intact. Timers are set by your team, never
guessed, and Idlefy only manages instances tagged idlefy=enabled — on AWS that boundary is enforced by the IAM policy itself.
Prices are on-demand list price for Linux instances and exclude storage, network, data transfer, and any negotiated or volume discounts. Actual bills vary by usage and account-level pricing. Prices as of 2026-07-20. Spot figures are indicative — AWS values are derived from AWS's published typical savings vs on-demand for the region; GCP values are the listed Spot price. Spot capacity can be reclaimed by the provider. Stopping preserves EBS and persistent-disk volumes; data on local instance-store or local-SSD drives does not survive a stop.