SpeechGen
SpeechGen assists creators in converting scripts and subtitles into audio for videos, lessons, and presentations. The browser-based editor includes over 5,000 voices spanning 150 languages, with voice samples provided to aid in selecting a speaker. You can allocate different voices to specific sections of the script, adjust the delivery and pauses using SSML, and incorporate background music.
The service also offers tools for converting subtitles to audio and provides a REST API for integrating speech generation with other workflows. The generated audio can be downloaded in MP3, WAV, or FLAC formats.
Pricing starts at $4.99 with one-time, pay-as-you-go credit packs. A free trial is available. The amount of credits used depends on the length of the text and the chosen voice quality.