Async launches open benchmark revealing critical text-to-speech accuracy gap in production voice agents
April 22, 2025 — Async, the AI-powered content creation platform formerly known as Podcastle, has released an open benchmark measuring how accurately commercial streaming TTS (text-to-speech) systems pronounce non-standard text. This includes dates, currencies, phone numbers, and similar content under real production conditions.
The voice AI market crossed $22 billion globally