Now, AWS has announced the launch of a WordPress plugin for Amazon Polly. This plug-in will allow Polly to generate high-quality audio versions of your text—perfect for audiences who prefer listening to reading.
You may then access the audio either through the post or in podcast format using a new feature, Amazon Pollycast. AWS Polly generates an MP3 for use, which you can store in your WordPress content or elsewhere, like Amazon S3.
You can use the Polly plug-in with WordPress installations that are on your data infrastructure, or on AWS.
Note that the plugin will connect to Amazon Polly each time you update or save a post. The pricing depends on the number of characters each time a request is made (see the Polly Pricing page). If you are on the AWS Free Tier, you may process up to 5 million characters per month for free, for one year starting from the point you first call on Polly.