Microsoft Azure Text-to-Speech

Convert text into lifelike speech using 400+ neural voices across 140 languages and variants.

Azure Text-to-Speech delivers high-fidelity audio through advanced deep learning models. Developers access a library of 400+ voices (including multilingual and emotional styles) to build accessible applications and branded voice experiences. The platform supports fine-grained control via SSML (Speech Synthesis Markup Language) for adjusting pitch, rate, and pronunciation. With 99.9% uptime and enterprise-grade security, it powers global services like Spotify and Motorola. You can deploy it in the cloud or at the edge using containers for low-latency performance.

https://azure.microsoft.com/en-us/products/ai-services/text-to-speech