We've added a warning to the sidebar and Subscription Details page to notify you of any unpaid invoices.

We've added filters to the Voices page, allowing you to filter voices by language, gender, and other attributes.

We've changed the default billing start day from 1st of the month to the date when a subscription is started.

We've temporarily removed the more comprehensive Usage dashboard. Instead, you can obtain simple usage analytics from the Billing tab.

We have expanded the https://console.sws.speechify.com/tts UI to showcase two extra options that our API supports through SSML: pitch and speed rate. These options allow you to customize the audio output to better suit your needs.

By default, Speechify AI API does loudness normalization of the synthesize audio across different models and voices. While this can be a valuable feature for the multi-voice apps, it inevitably adds a slight delay to the audio generation process.

Since the inception of the Speechify API, we have been using API keys for authentication. While this has worked well for many use-cases, we have realized that it is not the most secure way to authenticate the end-users, especially for the public clients, such as browser-based web apps, as well as native mobile and desktop apps. To harden our security and provide the industry-standard auth mechanism for these scenarios, have implemented OAuth 2.0 as an alternative authentication mechanism. Please read the Authentication Guide for more information on how to use OAuth 2.0 with the Speechify API.

As our product kept evolving, we realized the necessity of a more consistent and user-friendly design for the Speechify AI API dashboard. We have been working on a redesign of the user interface to make it more accessible and user-friendly. The new design includes a more modern and cleaner look, as well as better accessibility and usability features. Please let us know if you have any feedback or suggestions for further improvements.

As streaming audio is usually a latency-sensitive operation, and because the WAV format is not naturally suitable for streaming (due to how the file header is organized), we have decided to remove the WAV audio format from the streaming endpoint. This will allow us to focus on the more popular and streaming-friendly audio formats, such as MP3, OGG, and AAC.

The single simba-base model ID has been deprecated in favor of the two specialized IDs: simba-english and simba-multilingual. It is advised to use these new model IDs for integrations. The simba-base ID will be completely removed in the future.