im4gn family
The im4gn family has 6 sizes on AWS OpenSearch, from 2 to 64 vCPUs and 8 to 256 GiB of memory. In US East (N. Virginia), on-demand prices run $0.273 to $8.731 per hour for the standard option. It is sold in 12 regions and listed as Arm (Graviton) and storage optimized.
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | On-demand /hr | 1-yr reserved /hr |
|---|---|---|---|---|
| im4gn.large.search | 2 | 8 | $0.273 | $0.188 |
| im4gn.xlarge.search | 4 | 16 | $0.546 | $0.377 |
| im4gn.2xlarge.search | 8 | 32 | $1.091 | $0.753 |
| im4gn.4xlarge.search | 16 | 64 | $2.183 | $1.506 |
| im4gn.8xlarge.search | 32 | 128 | $4.366 | $3.012 |
| im4gn.16xlarge.search | 64 | 256 | $8.731 | $6.025 |
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Regions
Prices in USD per hour for the standard option; reserved prices are 1 year, no upfront. Updated 2026-11-12 from AWS public price lists. Compare all AWS OpenSearch sizes.