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Introducing Gemini 3.8 Live and 3.8 Live Extended Thinking

AnnouncementModelSep 15, 2026

Google announced two new voice models, Gemini 3.8 Live and Gemini 3.8 Live Extended Thinking. The Extended Thinking model ranked #1 on Artificial Analysis' Speech to Speech Quality Index with a score of 82.6 and leads agentic task completion on Sierra's τ-Voice-banking benchmark. Both models support 97 languages, background tool execution, and SynthID watermarking, and are rolling out to developers, enterprises, and consumers starting today.

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GoogleCompanyArtificial AnalysisCompanySierraCompanyGemini 3.8 LiveModelGemini 3.8 Live Extended ThinkingModel
Canonical: https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-8-live-gemini-3-8-live-extended-thinking/