Civo instances come in a variety of sizes depending on your need and budget. You can get details of the sizes of instances available by calling civo sizes list. You will get something along the lines of the following, the result will be depends or your selected region:

$ civo sizes list
+----------------+-------------+------------+-----+----------+-----------+------------+
| Name           | Description | Type       | CPU | RAM (MB) | Disk (GB) | Selectable |
+----------------+-------------+------------+-----+----------+-----------+------------+
| g3.xsmall      | Extra Small | Instance   |   1 |     1024 |        25 | Yes        |
| g3.small       | Small       | Instance   |   1 |     2048 |        25 | Yes        |
| g3.medium      | Medium      | Instance   |   2 |     4096 |        50 | Yes        |
| g3.large       | Large       | Instance   |   4 |     8192 |       100 | Yes        |
| g3.xlarge      | Extra Large | Instance   |   6 |    16384 |       150 | Yes        |
| g3.2xlarge     | 2X Large    | Instance   |   8 |    32768 |       200 | Yes        |
| g3.k3s.xsmall  | Extra Small | Kubernetes |   1 |     1024 |        25 | Yes        |
| g3.k3s.small   | Small       | Kubernetes |   1 |     2048 |        25 | Yes        |
| g3.k3s.medium  | Medium      | Kubernetes |   2 |     4096 |        25 | Yes        |
| g3.k3s.large   | Large       | Kubernetes |   4 |     8192 |        25 | Yes        |
| g3.k3s.xlarge  | Extra Large | Kubernetes |   6 |    16384 |        25 | Yes        |
| g3.k3s.2xlarge | 2X Large    | Kubernetes |   8 |    32768 |        10 | Yes        |
+----------------+-------------+------------+-----+----------+-----------+------------+

This command is useful for getting the name of the instance type if you do not remember it - you will need to specify the instance size name when creating an instance using the CLI tool.

Also you can use --filter to filter the result by the type, the avalible option are (instance, kubernetes) like this:

$ civo sizes list --filter kubernetes
+----------------+-------------+------------+-----+----------+-----------+------------+
| Name           | Description | Type       | CPU | RAM (MB) | Disk (GB) | Selectable |
+----------------+-------------+------------+-----+----------+-----------+------------+
| g3.k3s.xsmall  | Extra Small | Kubernetes |   1 |     1024 |        25 | Yes        |
| g3.k3s.small   | Small       | Kubernetes |   1 |     2048 |        25 | Yes        |
| g3.k3s.medium  | Medium      | Kubernetes |   2 |     4096 |        25 | Yes        |
| g3.k3s.large   | Large       | Kubernetes |   4 |     8192 |        25 | Yes        |
| g3.k3s.xlarge  | Extra Large | Kubernetes |   6 |    16384 |        25 | Yes        |
| g3.k3s.2xlarge | 2X Large    | Kubernetes |   8 |    32768 |        10 | Yes        |
+----------------+-------------+------------+-----+----------+-----------+------------+