# Configure AI behavior in GPT for Word

Configure model settings to customize how GPT for Word generates responses.

> **Info**
>
> Model settings are specific to each document.

## Add custom instructions

Provide custom instructions to specify preferences or requirements that you'd like the AI to consider when generating responses.

1. In the GPT for Word sidebar, click **Settings**.

   ![Click the Settings icon](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-open.png)

2. In the **Custom instructions** dropdown, select the type of instructions you'd like to add and edit them if needed.

   ![Select custom instructions template](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-custom-instructions.png)

3. Click **Save**.

The AI takes the custom instructions into account when generating responses in the current document.

> **Tip**
>
> To revert the custom instructions to the default, click **Reset to default**.

## Set the creativity level

Control how creative the AI is by setting the temperature and top-p parameters. The parameters work together to define overall creativity. Lower creativity generates responses that are straightforward and predictable, while higher creativity generates responses that are more random and varied.

> **Tip**
>
> For more information about temperature as used by OpenAI to set the creativity level, see our [temperature guide](https://autosheet.com/guides/openai-gpt-ai-temperature).

| Parameter       | Description                         | How to use                                                                                                       |
| --------------- | ----------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
| **Temperature** | Controls randomness in the output.  | - Possible values: **0-1**<br>- Keep at **1** if adjusting **Top P**<br>- Lower for factual, higher for creative |
| **Top P**       | Controls diversity of word choices. | - Possible values: **0-1**<br>- Keep at **1** for most use cases<br>- Only lower if **Temperature** is **1**     |

1. In the GPT for Word sidebar, click **Settings**.

   ![Click the Settings icon](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-open.png)

2. Use the slider to set **Creativity** between **0** and **1**.

   ![Creativity level](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-creativity.png)

3. (Optional) Use the slider to set **Top P** between **0** and **1**.

   ![The default level is set to 1 by default](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-top-p.png)

4. Click **Save**.

The AI uses the new temperature and top-p values when generating responses in the current document.

## Reduce AI response repetition

Set frequency and presence penalties to reduce the tendency of OpenAI and xAI models towards repetition.

| Parameter             | Description                                                                               | How to use                                                                                     |
| --------------------- | ----------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- |
| **Frequency penalty** | Controls how much to penalize new tokens based on their frequency in the text so far.     | - Possible values: **0-2**<br>- Keep at **0** by default<br>- Higher values reduce repetition  |
| **Presence penalty**  | Controls how much to penalize new tokens based on whether they appear in the text so far. | - Possible values: **0-2**<br>- Keep at **0** by default<br>- Higher values increase diversity |

1. In the GPT for Word sidebar, click **Settings**.

   ![Click the Settings icon](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-open.png)

2. Use the sliders to set **Frequency penalty** and **Presence penalty** between **0** and **2**.

   ![The default level is set to 0 by default.](https://autosheet.com/docs/article-images/gpt-for-word/model-settings-frequency-and-presence-penalties.png)

3. Click **Save**.

The AI uses the new penalty values when generating responses in the current document.

## What's next

- [Manage text formatting.](https://autosheet.com/docs/gpt-for-word/use/manage-text-formatting)
- [Select the model](https://autosheet.com/docs/gpt-for-word/configure/select-model) that best fits your needs.