Gemini 3.8 Live Extended Thinking

Sep 2026
Gemini 3.8 Live Extended Thinking
Compare in
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$0.005 / $0.018per minute in / out
1.3 sfirst audio?
68.6τ-Voice
Sep 2026released
en, es, fr +97Languages
Provider-stated input/output audio minute components; text, tools and session/backend charges remain separate.Price covers

Rankingat high effort?

Full ranking →
1GPT Live 174.52Grok Voice 3.071.63Gemini 3.8 Live Extended Thinking68.64Grok Voice 2.056.55Qwen Audio 3.0 Realtime Plus54.6

Strong at

A
Speech & Voice#3 of 17

Benchmarks

in Speech & Voice
Big Bench Audio · AA v1.297.7#6
Full-Duplex-Bench · AA subset v1/v1.591.9#16
Time to first audio · AA1.3#19
AA Speech Agent Arena · overall · Elo979.1#9
AA Speech Agent Arena · overall · Task Success89.1#8
AA Speech to Speech Index v2.082.6#3
AA Speech Agent Arena · agentic · Elo953.3#11
AA Speech Agent Arena · non-agentic · Elo1,016.6#8
τ-Voice · AA · aggregate68.6#3
τ-Voice · AA · airline72#2
τ-Voice · AA · retail50#4
τ-Voice · AA · telecom83.9#1
EVA-Bench · EVA-A accuracy pass54.8#3
EVA-Bench · EVA-X experience pass73.7#2
EVA-Bench · response speed1.7#3

FAQ

Is Gemini 3.8 Live Extended Thinking free to use?›

There is no free API; the cheapest paid price is $0.005 per 1M input tokens.

How good is Gemini 3.8 Live Extended Thinking, and what is it best at?›

#3 of 17 in Realtime. Strongest at: Speech & Voice.

Is Gemini 3.8 Live Extended Thinking better than Grok Voice 3.0?›

On τ-Voice · AA · aggregate, Gemini 3.8 Live Extended Thinking scores 68.6 vs 71.6 — lower.

How can I use Gemini 3.8 Live Extended Thinking?›

Through the Google API.

When was Gemini 3.8 Live Extended Thinking released? Is there a newer version?›

Released 2026-09-15. It is the current version in its line.

Is Gemini 3.8 Live Extended Thinking open source?›

No, Gemini 3.8 Live Extended Thinking is a closed model available through an API.

What is Gemini 3.8 Live Extended Thinking?›

Gemini 3.8 Live Extended Thinking is a closed speech & voice model from Google, released Sep 2026.

What are the best alternatives to Gemini 3.8 Live Extended Thinking?›

GPT Live 1 (better).