# Add text-to-speech to prompts in flow blocks in Amazon Polly
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You can enter text-to-speech prompts in the following flow blocks: 
+ [Get customer input](get-customer-input.md) 
+ [Loop prompts](loop-prompts.md)
+ [Play prompt](play.md)
+ [Store customer input](store-customer-input.md)

## Amazon Polly converts text-to-speech
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To convert text-to-speech, Connect Customer uses Amazon Polly, a service that converts text into lifelike speech using SSML. 
+ Amazon Polly default voices such as Amazon Polly Neural and Standard voices are **free**. 
+ You will be charged for using the Amazon Polly Generative voices. For more details on pricing, see the [Amazon Polly Pricing Details](https://aws.amazon.com/polly/pricing/)
+ If you are onboarded to [Next Gen Amazon Connect](https://docs.aws.amazon.com/connect/latest/adminguide/enable-nextgeneration-amazonconnect.html), the Generative voices are included as part of the Next Gen Amazon Connect pricing.
+ You are also charged for using custom voices such as unique [ Brand Voices](https://aws.amazon.com/blogs/machine-learning/build-a-unique-brand-voice-with-amazon-polly/) that are associated with your account.

## Amazon Polly best sounding voice
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Amazon Polly periodically releases improved voices and speaking styles. You can choose to automatically resolve your text-to-speech to the most lifelike and natural sounding variant of a voice. For example, if your flows use Joanna, Connect Customer automatically resolves to Joanna's conversational speaking style. 

**Note**  
If no Neural version is available, Connect Customer defaults to the standard voice. 

**To automatically use the best sounding voice**

1. Open the Connect Customer console at [https://console.aws.amazon.com/connect/](https://console.aws.amazon.com/connect/).

1. If prompted to login, enter your AWS account credentials.

1. Choose the name of the instance from the **Instance alias** column.  
![The Connect Customer virtual contact center instances page, the instance alias.](http://docs.aws.amazon.com/connect/latest/adminguide/images/instance.png)

1. In the navigation pane, choose **Flows**.

1. In the Amazon Polly section, choose **Use the best available voice**.

## How to add text-to-speech
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1. In a flow, add the block that will play the prompt. For example, add a [Play prompt](play.md) block. 

1. In the **Properties**, choose **Text-to-speech**. 

1. Enter plain text. For example, the following image shows *Thank you for calling*.   
![A message in the text-to-speech box.](http://docs.aws.amazon.com/connect/latest/adminguide/images/play-prompt-sample-tts.png)

   Or enter SSML, as shown in the following image:  
![A message formatted with SSML in the text-to-speech box.](http://docs.aws.amazon.com/connect/latest/adminguide/images/play-prompt-sample-ssml.png)

SSML-enhanced input text gives you more control over how Connect Customer generates speech from the text you provide. You can customize and control aspects of speech such as pronunciation, volume, and speed.

For a list of SSML tags you can use with Connect Customer, see [SSML tags supported by Connect Customer](supported-ssml-tags.md). 

For more information about Amazon Polly, see [Using SSML](https://docs.aws.amazon.com/polly/latest/dg/ssml.html) in the Amazon Polly Developer Guide.