Google has released Gemini 3.8 Live, its new Speech to Speech model, with the Extended Thinking (High) variant debuting at #1 on the Artificial Analysis Speech to Speech Index at 82.6, and #1 on our Tau Voice benchmark implementation at 68.6% Gemini 3.8 Live is @GoogleDeepMind's successor to Gemini 3.1 Flash Live, a Speech to Speech model that executes tools and API calls in the background while continuing the conversation. It comes in two variants: the standard Gemini 3.8 Live and Gemini 3.8 Live Extended Thinking, which supports configurable reasoning effort. We evaluated the standard model and the Extended Thinking variant at High reasoning effort through the Gemini Live API. Key takeaways: ➤ Speech to Speech Index: Gemini 3.8 Live Extended Thinking (High) debuts at #1 at 82.6, ahead of GPT-Live-1 (Astra, medium) at 81.5, Grok Voice Think Fast 2.0 High at 81.3 and GPT-Live-1 (Sol, low) at 80.1. The standard Gemini 3.8 Live debuts at #5 at 76.0, with both variants up on Gemini 3.1 Flash Live High at 71.5 (+11.1 and +4.5 points). The Index averages Speech Reasoning (Big Bench Audio), Agentic Performance (Tau Voice), Arena Preference and Arena Task Success Rate ➤ Speech Agent…

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