# Instance Compute Sizing

Agent instances can be one of 5 sizes, from Small to XXL. Each agent size comes with unique CPU (mCPUs) and memory (MB/GB). Each Agent size has distinct per hour prices based on your [service tier](https://www.contextual.io/pricing).

<figure><img src="/files/MtGNjIk9yrUEl2YcFjjG" alt=""><figcaption><p>Agent Size Selection</p></figcaption></figure>

<figure><img src="/files/p2outQjpp4jMwcYqBBgM" alt=""><figcaption><p>Agent Specs and Pricing</p></figcaption></figure>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.contextual.io/documentation-and-resources/components-and-data/agents/scale-and-performance/instance-compute-sizing.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.