The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Google's[2][3][4] post is dated "Sep 23, 2026" and says both models are "rolling out starting today"; The Next Web[6] reports "Google released Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS on Wednesday". The Gemini API changelog files the GA a day earlier, under September 22.
The Gemini API changelog under September 22, 2026 lists both models as generally available with the new Voices endpoint, voice design, voice replication and an extended library of 150+ voices, and says Flash-Lite TTS replaces gemini-3.1-flash-tts-preview.[1]
Flash TTS costs $0.50 per million text input tokens and $9.00 per million audio output tokens through 31 December 2026, then $1.00 and $18.00; Flash-Lite TTS $0.50 and $6.00, then $1.00 and $12.00.[1]
The API model page for gemini-3.8-flash-tts: text in, audio out, an 8,192-token input limit and 16,384 output tokens (Gemini API serving limit), latest update September 2026.[1]
Android Authority on the rollout to Gemini Notebook and Google[2][3][4] Vids; it notes ElevenLabs still scored higher in Hume's individual voice-quality and human-like-variation categories, and that AI Studio voice replication is blocked in the UK, the EEA, India, Texas and Illinois.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.
Unofficial, from StatusGator. Uptime is the share of the window not marked down (559 min down, 1658 min degraded); it covers the whole service, not this version alone.