PlayHT

PlayAI develops voice AI technology that enables businesses and developers to create realistic audio content and conversational experiences. The company's platform offers text-to-speech capabilities through its flagship models - PlayDialog and Play 3.0 mini. PlayDialog is a multi-turn text-to-speech model that uses conversational context to control prosody, intonation, emotion, and pacing for natural-sounding speech delivery. The Play 3.0 mini is a lightweight, low-latency model supporting over 30 languages that can be integrated into applications within 20 minutes. Through its API and tools, customers can choose from predefined voices or clone voices to integrate text-to-speech functionality into their applications. The platform includes a playground for generating read-aloud versions of content and a dashboard for creating audio narrations.

PlayAI also offers PlayNote, a tool that transforms PDFs, videos, photos, and other files into podcast-style shows, read-aloud summaries, debates, and stories. The company places significant emphasis on the emotional aspects of voice generation, allowing developers to fine-tune AI tone, pacing, and expression in real-time through text cues. Their models are trained on hundreds of millions of conversations representing real-world examples, using custom large language models trained on diverse human speech datasets including podcasts, narrations, storytelling, and business conversations.

Their technology serves industries spanning healthcare, travel, hospitality, and retail sectors, providing voice AI solutions for applications such as 24/7 customer support, appointment scheduling, and sales lead engagement.

Key customers and partnerships

As of November 2024, their low-latency models had served approximately 40,000 customers across industries including healthcare, travel, hospitality, and retail. PlayAI's platform has been adopted by enterprise customers including 11x, which uses PlayAI's text-to-speech models for their Agentic Phone Rep system.