> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flex.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Command: cluster

> Discover the compute clusters available to your organization on FlexAI

Clusters are the compute backends that run your FlexAI workloads. Each cluster is provisioned with a specific accelerator type (for example, NVIDIA H100 or A100) and is made available to one or more organizations.

By default, FlexAI selects a cluster automatically based on the `--device-arch` flag of the command you run. If you need to pin a workload to a specific cluster — for instance, to target a particular accelerator model — you can pass `--affinity cluster=<cluster_name>` to [`flexai training run`](/cli/reference/training/run), [`flexai training debug-ssh`](/cli/reference/training/debug-ssh), or [`flexai inference serve`](/cli/reference/inference/serve).

Use the `flexai cluster` set of subcommands to discover which clusters your organization can use.

## Available subcommands

* [`flexai cluster list`](/cli/reference/cluster/list) - Lists the clusters available to your organization.