Play.ht (now branded PlayAI) is a generative voice AI platform that turns text into ultra-realistic speech and powers real-time conversational voice agents. Originally launched as a browser-based text-to-speech studio, it has grown into a full Voice AI stack used by creators, podcasters, audiobook producers, and developers building voice-driven applications. The platform offers a library of over 900 AI voices spanning more than 140 languages and accents, each with distinct tone, inflection, and personality, alongside instant voice cloning that can replicate a voice from roughly 30 seconds of audio. Its in-house models include PlayDialog, a large expressive model that handles multi-turn, two-speaker conversations for natural-sounding podcasts and dialogue, plus the fast multilingual Play 3.0 family. Users can fine-tune pitch, speed, emphasis, and pauses, apply emotional styles, and export studio-quality audio for videos, e-learning, IVR, and marketing. For developers, Play.ht exposes a low-latency streaming API and SDKs to embed text-to-speech and real-time voice agents with LLM integration into their own products. Founded in 2016 and headquartered in Palo Alto, California, PlayAI was acquired by Meta in 2025. The service runs in the browser with a credit/character-based free tier and paid plans that unlock commercial licensing, higher-fidelity cloning, and API access.