Generally available: The G4 accelerator-optimized machine series supports

## Feature Feature **Generally available**: The G4 accelerator-optimized machine series supports the flex-start provisioning model. When you specify the flex-start provisioning model for your G4 virtual machine (VM) instances, you receive a discount up to 50% for vCPUs, memory, and GPUs. Flex-start is ideal for fault-tolerant or temporary workloads that can benefit from lower costs by having a flexible start time. For more information, see[About Flex-start VMs](https://cloud.google.com/compute/docs/instances/about-flex-start-vms). ## Feature Feature **Public Preview**: The C4A VM family now offers a `c4a-highmem-96-metal` bare metal instance. This machine type has 96 vCPUs and 768 GB of DDR5 memory,[Titanium I/O offload processing](https://cloud.google.com/titanium), and supports Hyperdisk Balanced, Hyperdisk Extreme, and Hyperdisk ML storage volumes. This bare metal instance is offered in select [regions and zones](https://cloud.google.com/compute/docs/bare-metal-instances#regions%5Fzones). For more information, see[C4A machine series](https://cloud.google.com/compute/docs/general-purpose-machines#c4a%5Fseries).