Gemini 3.1 Flash TTS Preview deprecated, retires 2026-12-18

Google has marked Gemini 3.1 Flash TTS Preview, released 2026-04-15, for retirement with an earliest possible shutdown date of 2026-12-18, roughly 34 days out and subject to change. The model carries an 8k-token text context, 16k maximum output, and pricing of $1 per 1M input tokens and $20 per 1M output tokens. The deprecation notice points developers to a provider announcement and to a tool that scans repositories for models facing shutdown dates.

GG▲ Retiring soon Gemini 3.1 Flash TTS Preview Google · gemini-3.1-flash-tts-preview Google: earliest possible shutdown 2026-12-18 estimated, may move . Provider statement → https://models.dev/google/gemini-3.1-flash-tts-preview Released2026-04-15 Retires2026-12-18in 34d gemini-flashtext8k context16k max out$1 / $20 per 1M also matches: gemini-3.1-flash-tts-preview google/gemini-3.1-flash-tts-preview provider announcement → https://models.dev/google/gemini-3.1-flash-tts-preview Does your code call Gemini 3.1 Flash TTS Preview? $ curl -fsSL https://llmstatus.ai/install.sh | bash Then mm status in any repo — it finds every model you use and flags the ones on a clock. No account, nothing uploaded. Get alerted before it retires → https://llmstatus.ai/sign-up