Independent tests report Gemini 3.8 Live Extended tops speech indexes and shows lower audio input costs

Third-party benchmarks and reported per-hour input pricing for Gemini 3.8 Live variants were published shortly after launch, affecting competitive positioning for live voice models.

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- Artificial Analysis’ Speech-to-Speech Index: Gemini 3.8 Live Extended Thinking scored 82.6, reported as first place on the index.
- Tau Voice: Extended Thinking reported a 68.6% score versus 37.7% for an older Gemini live model.
- Human blind tests (Speech Agent Arena) reportedly still favored an older Gemini 3.1 Flash Live in listener preference.
- Reported cost for Gemini 3.8 Live: $0.84 per hour of input audio — about half the prior model’s reported $1.75 rate.
- Reported cost for Gemini 3.8 Live Extended Thinking: $3.50 per hour of input audio, lower than some competitors listed.
- Reported first-audio-response latency improved from ~2.99s (older) to ~1.18s on the new models.

Read full analysis on tipranks.com

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