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

# RadioGroup

### Attributes

<ParamField path="id" type="str">
  The identifier used to retrieve the widget value from the settings.
</ParamField>

<ParamField path="label" type="str">
  The label of the input widget.
</ParamField>

<ParamField path="values" type="List[str]" optional>
  Labels for the radio options.
</ParamField>

<ParamField path="items" type="Dict[str, str]" optional>
  Labels with corresponding values for the radio options.
</ParamField>

<ParamField path="initial_value" type="str" optional>
  The initially selected value.
</ParamField>

<ParamField path="initial_index" type="int" optional>
  Index of the initial value. Can only be used in combination with `values`.
</ParamField>

<ParamField path="tooltip" type="str" optional>
  The tooltip text shown when hovering over the tooltip icon next to the label.
</ParamField>

<ParamField path="description" type="str" optional>
  The text displayed underneath the input widget.
</ParamField>

### Usage

```python Code Example theme={null}
import chainlit as cl
from chainlit.input_widget import RadioGroup


@cl.on_chat_start
async def start():
    settings = await cl.ChatSettings(
        [
            RadioGroup(
                id="ResponseLength",
                label="Response Length",
                values=["Short", "Medium", "Long"],
                initial_index=1,
            )
        ]
    ).send()
    value = settings["ResponseLength"]

```