UnrealSpeech provides developers with a powerful text-to-speech API that delivers high-quality voice synthesis at up to 10x cheaper rates than competitors. The platform offers both synchronous short and medium endpoints, capable of handling texts up to 1,000 and 3,000 characters respectively, with response times as quick as 0.3 seconds for shorter texts. The service includes features like customizable voice selection, adjustable speech parameters, and flexible audio format options, making it suitable for various applications requiring voice synthesis capabilities.