i4g.4xlarge is an AWS EC2 instance with 16 vCPUs, 128 GiB memory (AWS Graviton2 Processor). In US East (N. Virginia) it costs $1.236 per hour on demand ($901.92 per month) for Linux; a 1-year reserved instance with no upfront costs $0.8018 per hour, 35% less. Spot capacity is about $0.3315 per hour. It is sold in 8 regions.
Prices by region
USD per hour, Linux. Reserved prices are no upfront, standard. Cheapest on-demand first.