Seed Audio

Seed Audio is an AI text to speech and voice generator powered by ByteDance Seed Speech models and Seed Audio 1.0. Seed Audio turns any written script into natural, emotional speech and clones a consented voice from just seconds of audio, so one brand voice stays consistent across every project. Key features include realistic text to speech with human-like emotion and pacing, instant voice cloning from a short consented sample, 300+ lifelike voices across dozens of languages, voice design controls for emotion and speed, a low-latency developer API, and commercial-ready audio output. Creators use Seed Audio to narrate YouTube videos, ads, podcasts, and audiobooks, while developers stream speech into apps, voice agents, and IVR. Seed Audio is freemium: free accounts generate up to 120 characters per conversion, while paid plans and credit packs raise that to 1,000 characters and start at $9.9/month.