ThursdAI — the weekly AI news podcast hosted by Alex Volkov — has covered 3 Inworld AI releases since Nov 2025, most recently Realtime TTS-2 on Sep 3, 2026. Highlights include Realtime TTS-2, Inworld TTS, TTS-1.5. Every entry below has the episode segment where we covered it live, plus primary-source links and key numbers where we have them.
Inworld Realtime TTS-2 goes GA: sub-100ms, $25/M characters, #1 on AA Controlled Voice Arena
Inworld's real-time text-to-speech model is generally available with sub-100ms latency at $25 per million characters. It ranks #1 on Artificial Analysis's Controlled Voice Arena and #4 on the Provider arena.
Inworld TTS-1.5 claims #1 TTS ranking at half a cent per minute
Inworld AI launched TTS-1.5, a closed-source text-to-speech model claiming the #1 ranking with sub-250ms latency. Its headline is price: roughly $5 per million characters (about half a cent per minute) versus ElevenLabs' $120 per million characters.
Inworld TTS takes the #1 spot on the Artificial Analysis speech benchmark
Inworld released a new version of its TTS model that claimed the #1 position on the Artificial Analysis text-to-speech benchmark. It featured in the episode's voice segment as evidence that commercial TTS quality keeps climbing fast.
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