On-Demand is great for testing and comes with up to 70 minutes of TTS or 400 minutes of STT for free. Creator is for content creators and small projects; it unlocks audio downloads and more custom voices. Builder is for growing projects and small teams; it adds workspace creation and sharing, up to 40% off rates, and 3,000 custom voices. Developer is for production apps; you get up to 47% off rates, 10,000 custom voices, and priority email support. Growth is for high-volume production use-cases; it offers up to 53% off rates, even higher API limits, 30,000 custom voices, and compliance add-ons. Enterprise is fully custom with rates as low as $5/1M chars on Realtime TTS-2 —
contact sales.