How much does an idle m6i.4xlarge cost on AWS?
An m6i.4xlarge billed on-demand and left running around the clock costs about $561/mo at its cheapest listed region (us-east-1). Scheduling it off outside business hours cuts that to roughly $167/mo — a $394/mo saving.
Cheapest on-demand
$0.7680/hr
us-east-1
Running 24/7
$561/mo
730-hour month
Business-hours savings
$394/mo
70% off the 24/7 bill
Price by region
| Region | Hourly (on-demand) | Spot (typical) | ≈ Monthly (24/7) |
|---|---|---|---|
| us-east-1 Cheapest | $0.7680/hr | $0.2611/hr | ≈ $561/mo |
| us-east-2 | $0.7680/hr | $0.1997/hr | ≈ $561/mo |
| us-west-2 | $0.7680/hr | $0.2842/hr | ≈ $561/mo |
| ap-south-1 | $0.8080/hr | $0.3394/hr | ≈ $590/mo |
| eu-west-1 | $0.8560/hr | $0.4023/hr | ≈ $625/mo |
| eu-central-1 | $0.9200/hr | $0.4416/hr | ≈ $672/mo |
| ap-southeast-1 | $0.9600/hr | $0.4704/hr | ≈ $701/mo |
| ap-southeast-2 | $0.9600/hr | $0.4608/hr | ≈ $701/mo |
| ap-northeast-1 | $0.9920/hr | $0.3274/hr | ≈ $724/mo |
| sa-east-1 | $1.2240/hr | $0.3182/hr | ≈ $894/mo |
What a schedule saves
| Schedule | Monthly cost | Savings vs 24/7 |
|---|---|---|
| Running 24/7 | $561/mo | baseline |
| Weekdays only (off on weekends) | $400/mo | -$160/mo (29%) |
| Business hours only (10×5) | $167/mo | -$394/mo (70%) |
Assumes a 730-hour month at on-demand list price. Actual savings depend on when the instance is actually used.
About the m6i family
M6i is the sixth-generation Intel Ice Lake refresh of the general-purpose line, with higher per-core performance and more consistent latency than M5 at a similar price point. Teams upgrade existing M5 fleets to M6i for staging and QA environments to get closer parity with newer production hardware. The upgrade rarely comes with a corresponding schedule review, so the same idle nights-and-weekends pattern just moves to slightly more expensive hardware.
Regional pricing varies: m6i.4xlarge runs $0.7680/hr in us-east-1, the cheapest region priced here, versus $1.2240/hr in sa-east-1, the priciest — a 37% spread across regions for the identical instance type.
Common questions
How much does an idle m6i.4xlarge cost per month?
At the cheapest listed region (us-east-1), an m6i.4xlarge costs $0.7680/hr, or about $561/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 $394/mo (70%) versus running 24/7. A lighter schedule — on around the clock on weekdays, off on weekends — still saves about $160/mo (29%).
Is m6i worth it over m5 for dev and staging?
If you are provisioning fresh, yes — newer Ice Lake cores at a comparable price. Upgrading an existing, quiet m5 environment purely for speed rarely pays back, since dev boxes spend most of their week idle anyway. Match production hardware where parity matters — performance testing — and schedule everything else off.
Other m6i 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.