c8i-flex.xlarge
Compute optimized · c8i-flex series · Intel Xeon Scalable (Granite Rapids)
- vCPU
- 4
- Memory
- 8 GiB
- Linux / hour
- $0.1780
- Per month
- $130
- Per vCPU-hour
- $0.0445
- Per GiB-hour
- $0.0223
Analysis
The c8i-flex.xlarge is a compute optimized instance in the c8i-flex series with 4 vCPUs and 8 GiB of memory on Intel Xeon Scalable (Granite Rapids) (up to 3.9 GHz), which makes it compute-heavy at 2 GiB of memory per vCPU.
Within the same generation and size, the c8g.xlarge on AWS Graviton4 costs $0.1595/hour, 10% less ($13.52 a month), though switching means rebuilding software for arm64. The other variants are the c8i.xlarge at $0.1874, the c8gd.xlarge at $0.1960 and the c8a.xlarge at $0.2155.
Running it in Mumbai instead of São Paulo saves $70.36 a month per instance: $0.1780/hour against $0.2744/hour, a 54% spread.
On demand it costs $0.1780/hour in US East (N. Virginia), $130 a month if left running, which puts it mid-table for compute optimized types at the 38th percentile per vCPU ($0.0445 per vCPU-hour) and the 41st percentile per GiB ($0.0223 per GiB-hour).
Windows Server roughly doubles the bill at $0.3528/hour, because the licence is charged per vCPU.
Compared with the previous generation, it costs 5.0% more than the c7i-flex.xlarge on Intel Xeon Scalable (Sapphire Rapids) ($6.18 more a month per instance), in exchange for the newer processor.
Looking beyond its own line, 12 of 31 current types with 4 vCPUs and similar memory are cheaper. The cheapest of those is the c6g.xlarge on AWS Graviton2 at $0.1360/hour.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $0.1780 | $0.3528 | – | – | |
| Ohio us-east-2 | $0.1780 | $0.3528 | – | – | |
| Oregon us-west-2 | $0.1780 | $0.3528 | – | – | |
| Canada Central ca-central-1 | $0.1948 | $0.3696 | – | – | |
| São Paulo sa-east-1 | $0.2744 | $0.4492 | – | – | |
| Ireland eu-west-1 | $0.1910 | $0.3658 | – | – | |
| London eu-west-2 | $0.2116 | $0.3864 | – | – | |
| Frankfurt eu-central-1 | $0.2032 | $0.3780 | – | – | |
| Mumbai ap-south-1 | $0.1780 | $0.3528 | – | – | |
| Singapore ap-southeast-1 | $0.2053 | $0.3801 | – | – | |
| Sydney ap-southeast-2 | $0.2325 | $0.4073 | – | – | |
| Tokyo ap-northeast-1 | $0.2241 | $0.3989 | – | – |
Shared tenancy, no pre-installed software. Reserved rates are standard, no upfront, per hour. Prices as of 2026-11-04.
Same shape, other types
| Type | vCPU | Memory | $/hour | vs c8i-flex.xlarge |
|---|---|---|---|---|
| c6g.xlarge AWS Graviton2 Processor | 4 | 8 GiB | $0.1360 | -24% |
| c7g.xlarge AWS Graviton3 Processor | 4 | 8 GiB | $0.1450 | -19% |
| c6a.xlarge AMD EPYC 7R13 Processor | 4 | 8 GiB | $0.1530 | -14% |
| c6gd.xlarge AWS Graviton2 Processor | 4 | 8 GiB | $0.1536 | -14% |
| c5a.xlarge AMD EPYC 7R32 | 4 | 8 GiB | $0.1540 | -14% |
| c8g.xlarge AWS Graviton4 Processor | 4 | 8 GiB | $0.1595 | -10% |
Cost calculator
Specs
| vCPU | 4 |
|---|---|
| Memory | 8 GiB (2.0 per vCPU) |
| Processor | Intel Xeon Scalable (Granite Rapids) |
| Clock | 3.9 GHz |
| Storage | EBS only |
| Network | Up to 12500 Megabit |
c8i-flex sizes
| c8i-flex.large | 2 vCPU | $0.0890 |
| c8i-flex.xlarge | 4 vCPU | $0.1780 |
| c8i-flex.2xlarge | 8 vCPU | $0.3561 |
| c8i-flex.4xlarge | 16 vCPU | $0.7122 |
| c8i-flex.8xlarge | 32 vCPU | $1.42 |
| c8i-flex.12xlarge | 48 vCPU | $2.14 |
| c8i-flex.16xlarge | 64 vCPU | $2.85 |