Gemini 3.8 Live Extended Thinking

Name: Gemini 3.8 Live Extended Thinking
Brand: Google

Sep 2026

Gemini 3.8 Live Extended Thinking

Compare in

$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 →

1Grok Voice 3.094.8 2Grok Voice 2.094.6 3Gemini 3.8 Live93.2 4GPT Realtime 2.191.5 5GPT Live 190.9

···

7GPT Realtime89.4 8Gemini 3.8 Live Extended Thinking89.1 9Eleven Realtime v1 Max87.1

Strong at

Speech & Voice#3 of 17

Alternatives?

ModelScoreCostPriceWhat changes

Same labGemini 3.8 Livesame——

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#5

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 GPT Realtime?›

On AA Speech Agent Arena · overall · Task Success, Gemini 3.8 Live Extended Thinking scores 89.1 vs 89.4 — about the same.

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.