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Gemini 3.8 Live Extended Thinking

PopularityRank 670 of 875

0out of 100same as last month

Summary

Gemini 3.8 Live Extended Thinking targets complex, multi-step voice interactions that need background reasoning. Google describes it as an audio-to-audio model that reasons and runs asynchronous tool calls while streaming continuous audio. It accepts text, images, audio, and video and returns text and audio. The conversation can stay live while the model works through a harder request.

Reasoning effort can be set to low, medium, or high, and the API documents 131,072 input tokens with 65,536 output tokens. Compared with Gemini 3.8 Live, this variant keeps asynchronous function calls and their reasoning signals available while the audio response continues.

All benchmark results

Every published result with its source, test setup and comparison models.

Show all 47 published benchmark results

Page 1 of 4

Measurements without matching peer values

These measurements have no matching peer values under the same test conditions. Their original values and sources remain available here.

Artificial Analysis Big Bench Audio speech reasoning (Show measurement, test conditions, and source)
Source value
98
Score
98
Metric
accuracy
Unit
%
Benchmark version
Big Bench Audio v1.2
Category
audio
Direction
Higher is better
Sample
1000
Source type
independent-evaluator
Evaluator
Artificial Analysis
Status
active
Retrieved at
2026-10-15
Methodology
Independent evaluation. Native audio-to-audio on Big Bench Audio v1.2, 1,000 questions over four 250-item reasoning categories. Exact configuration: Gemini 3.8 Live Extended Thinking (High).
Source Artificial Analysis
Artificial Analysis Conversational Dynamics (Show measurement, test conditions, and source)
Source value
91.9
Score
91.9
Metric
conversational behavior score
Unit
%
Benchmark version
AA Full Duplex Bench v1 + v1.5 view
Category
audio
Direction
Higher is better
Source type
independent-evaluator
Evaluator
Artificial Analysis
Status
active
Retrieved at
2026-10-15
Methodology
Independent evaluation. Full Duplex Bench v1/v1.5 conversational behavior view (pause handling, turn taking, interruption and backchannel categories). Exact configuration: Gemini 3.8 Live Extended Thinking (High).
Source Artificial Analysis
Artificial Analysis τ-Voice task completion (Show measurement, test conditions, and source)
Source value
68.6
Score
68.6
Metric
Task Completion pass@1
Unit
%
Benchmark version
Artificial Analysis τ-Voice base task set
Category
audio
Direction
Higher is better
Source type
independent-evaluator
Evaluator
Artificial Analysis
Status
active
Retrieved at
2026-10-15
Methodology
Independent evaluation. Customer support agent task completion across airline (50), retail (114), telecom (114) scenarios, with tools and policy. Publisher's general protocol averages three trials; exact row Gemini 3.8 Live Extended Thinking (High) uses 3 trials.
Source Artificial Analysis
Speech Agent Arena task success rate (Show measurement, test conditions, and source)
Source value
89.1
Score
89.1
Metric
eligible-conversation task success rate
Unit
%
Benchmark version
Current Speech Agent Arena board retrieved 2026-10-15
Category
audio
Direction
Higher is better
Lower confidence bound
84.7
Upper confidence bound
92.4
Source type
independent-evaluator
Evaluator
Artificial Analysis
Status
active
Retrieved at
2026-10-15
Methodology
Independent evaluation. Correct final task-completing tool call on eligible conversations only; participant deviations and unverifiable cases are excluded. Exact configuration: Gemini 3.8 Live Extended Thinking (High).
Source Artificial Analysis
Sierra τ³-Banking task-completion score (Show measurement, test conditions, and source)
Source value
35.1
Score
35.1
Metric
reported banking-agent task completion
Unit
%
Benchmark version
Official Google DeepMind chart on Gemini Audio Live dialogue page, retrieved 2026-10-17
Category
agentic
Direction
Higher is better
Source type
vendor-reported
Evaluator
Google DeepMind Gemini Audio performance chart
Status
active
Retrieved at
2026-10-17
Methodology
Vendor-reported result. Google DeepMind's official performance chart labels this result as the Sierra τ³-Banking leaderboard and names the exact model variant Gemini 3.8 Live Extended Thinking. The chart caption does not state reasoning effort, model/serving revision, task setup, sample count, or confidence interval. No Sierra evaluator row was located in this pass; this is retained solely as the official vendor-published report of its external benchmark result.
Context
This is Google DeepMind's vendor-reported chart value, not a direct Sierra leaderboard capture. Reasoning effort, evaluation setup, N, CI, and serving revision are not published in the page. Do not equate τ³-Banking with Artificial Analysis τ-Voice.
Source Google DeepMind Gemini Audio performance chart
Cekura Gemini 3.8 Live Extended Thinking scenario reliability (pass³) (Show measurement, test conditions, and source)
Source value
52.4
Score
52.4
Metric
share of scenarios passing on all three runs (pass^3)
Unit
%
Benchmark version
Cekura Gemini Live benchmark, page dated 2026-10-16
Category
speech-to-speech
Direction
Higher is better
Sample
82
Source type
independent-evaluator
Evaluator
Cekura speech-to-speech benchmark
Status
active
Retrieved at
2026-10-17
Methodology
Independent evaluation. Cekura's separate row is Gemini 3.8 Live Extended Thinking, with thinking level high. The benchmark uses the same 82 scenarios for every model, each run three times, for 246 live calls per model. Reliability is the pass^3 scenario rate; the page reports 52.4%.
Context
The API serving revision is not pinned and the page does not publish a confidence interval. Do not confuse scenario N=82 with 246 calls.
Source Cekura speech-to-speech benchmark
Cekura TurnBench end-of-turn score (six-condition average) (Show measurement, test conditions, and source)
Source value
84
Score
84
Metric
end-of-turn score averaged across six line conditions
Unit
%
Benchmark version
Cekura TurnBench leaderboard, retrieved 2026-10-17
Category
speech-to-speech / turn-taking
Direction
Higher is better
Source type
independent-evaluator
Evaluator
Cekura TurnBench
Status
active
Retrieved at
2026-10-17
Methodology
Independent evaluation. The exact leaderboard row is Gemini 3.8 Live Ext. Thinking. The source reports the end-of-turn score from Sesame TurnBench's published scorer, averaged over six line conditions and a 25-script private leaderboard set. It reports 36 calls per model per condition; all models heard the same recorded calls, streamed from US East with provider-default turn detection.
Context
The private benchmark set cannot be rerun externally. The page says its 95% range overlaps with several models but gives no exact interval for this row; no CI or serving revision is recorded.
Source Cekura TurnBench
MIVAS cross-industry pass@1 (Show measurement, test conditions, and source)
Source value
81.9
Score
81.9
Metric
cross-industry pass@1, task success on one scored trial
Unit
%
Benchmark version
MIVAS September 2026 evaluation; three-industry cross-industry row
Category
speech-to-speech / multi-agent task success
Direction
Higher is better
Source type
independent-evaluator
Evaluator
Bluejay MIVAS
Status
active
Retrieved at
2026-10-17
Methodology
Independent evaluation. The exact MIVAS model profile is Gemini 3.8 Live Extended Thinking with model ID gemini-3.8-live-extended-thinking, HIGH thinking level and native audio input/output. The Bluejay LiveKit multi-agent voice-agent harness was evaluated in September 2026 on healthcare, legal and customer-support suites, 1,080 scored conversations in total with five scored trials per task. The source's direct Cross-industry row reports pass@1. No metric-specific denominator is published.
Context
This is a multi-agent system result, not an isolated model score. The public profile identifies the model and HIGH effort, but no immutable result-code revision or metric-specific N/CI is published.
Source Bluejay MIVAS
MIVAS cross-industry pass^5 (Show measurement, test conditions, and source)
Source value
55.5
Score
55.5
Metric
cross-industry five-run reliability (pass^5)
Unit
%
Benchmark version
MIVAS September 2026 evaluation; three-industry cross-industry row
Category
speech-to-speech / multi-agent reliability
Direction
Higher is better
Source type
independent-evaluator
Evaluator
Bluejay MIVAS
Status
active
Retrieved at
2026-10-17
Methodology
Independent evaluation. The exact MIVAS model profile is Gemini 3.8 Live Extended Thinking with model ID gemini-3.8-live-extended-thinking and HIGH thinking level. Bluejay reports three September 2026 industry suites, 1,080 scored conversations in total with five scored trials per task. The source's direct Cross-industry row reports pass^5; no metric-specific denominator is published.
Context
This is a multi-agent system result, not an isolated model score. The public profile identifies model and HIGH effort, but no immutable result-code revision or metric-specific N/CI is published.
Source Bluejay MIVAS
Cekura agent-workflow success rate (Show measurement, test conditions, and source)
Source value
76
Score
76
Metric
calls passing every check
Unit
%
Benchmark version
Cekura speech-to-speech agent comparison, page last updated 2026-10-07
Category
speech-to-speech / agent workflow
Direction
Higher is better
Sample
246
Source type
community-reported
Evaluator
Cekura speech-to-speech agent benchmark
Status
active
Retrieved at
2026-10-18
Methodology
Community-reported result. Cekura speech-to-speech whole-agent workflow comparison. Exact model ID gemini-3.8-live-extended-thinking (displayed as Gemini 3.8 Live Extended Thinking); thinking level high; voice Charon; service turn detection; audio 16 kHz. Both compared systems use the same open-source Pipecat pipeline, prompt, tools, and connection. 82 scenarios run three times each; the page reports 2,952 calls across the benchmark.
Context
This is an agent-workflow result, not a model-only score. The page gives 82 scenarios and three runs per model; no 95% CI or immutable serving revision is published. The evaluator's institutional independence and affiliations are not established by this page. Data accuracy is conditioned on calls that save data, with the subset denominator unknown. Results apply only to the exact agent configuration above. N=246 calls per model from 82 scenarios x 3 runs; call-based measure.
Source Cekura speech-to-speech agent benchmark
Cekura agent replies reached expected outcome (Show measurement, test conditions, and source)
Source value
88.6
Score
88.6
Metric
agent-response outcome rate
Unit
%
Benchmark version
Cekura speech-to-speech agent comparison, page last updated 2026-10-07
Category
speech-to-speech / agent workflow
Direction
Higher is better
Sample
246
Source type
community-reported
Evaluator
Cekura speech-to-speech agent benchmark
Status
active
Retrieved at
2026-10-18
Methodology
Community-reported result. Cekura speech-to-speech whole-agent workflow comparison. Exact model ID gemini-3.8-live-extended-thinking (displayed as Gemini 3.8 Live Extended Thinking); thinking level high; voice Charon; service turn detection; audio 16 kHz. Both compared systems use the same open-source Pipecat pipeline, prompt, tools, and connection. 82 scenarios run three times each; the page reports 2,952 calls across the benchmark.
Context
This is an agent-workflow result, not a model-only score. The page gives 82 scenarios and three runs per model; no 95% CI or immutable serving revision is published. The evaluator's institutional independence and affiliations are not established by this page. Data accuracy is conditioned on calls that save data, with the subset denominator unknown. Results apply only to the exact agent configuration above. N=246 calls per model from 82 scenarios x 3 runs; call-based measure.
Source Cekura speech-to-speech agent benchmark
Cekura saved-data accuracy (Show measurement, test conditions, and source)
Source value
84.4
Score
84.4
Metric
calls where everything saved matched exactly
Unit
%
Benchmark version
Cekura speech-to-speech agent comparison, page last updated 2026-10-07
Category
speech-to-speech / agent workflow
Direction
Higher is better
Source type
community-reported
Evaluator
Cekura speech-to-speech agent benchmark
Status
active
Retrieved at
2026-10-18
Methodology
Community-reported result. Cekura speech-to-speech whole-agent workflow comparison. Exact model ID gemini-3.8-live-extended-thinking (displayed as Gemini 3.8 Live Extended Thinking); thinking level high; voice Charon; service turn detection; audio 16 kHz. Both compared systems use the same open-source Pipecat pipeline, prompt, tools, and connection. 82 scenarios run three times each; the page reports 2,952 calls across the benchmark.
Context
This is an agent-workflow result, not a model-only score. The page gives 82 scenarios and three runs per model; no 95% CI or immutable serving revision is published. The evaluator's institutional independence and affiliations are not established by this page. Data accuracy is conditioned on calls that save data, with the subset denominator unknown. Results apply only to the exact agent configuration above. Unknown. The page conditions this measure on calls that save data but gives no denominator for that subset.
Source Cekura speech-to-speech agent benchmark

Page 1 of 4

Popularity compared

How often the model is searched for, used and mentioned, compared with every model of its category.

Popularity index

0 to 100, higher is more popular

20 of 83 models

As of November 2026 · Source: gradually.ai popularity index

Over time

Weekly values from October 18, 2026 to November 5, 2026

Gemini 3.8 Live Extended ThinkingAmazon Nova 2 SonicEleven Multilingual STS v2Eleven Music v2.5Eleven Text to Sound v2

All specifications

Architecture

Model class
Real-time audio model
Source: Model class

Input and output

Input
Text, image, audio and video
Source: Input
Output
Text and audio
Source: Output
Reasoning levels
low, medium, high
Source: Reasoning levels
Capabilities
Audio-to-audio dialogue with interleaved reasoning, asynchronous function calling, and audio streaming
Source: Capabilities

Watermarking and provenance

AI watermarking refers to invisible signals embedded in the output. Visible marks and provenance metadata are listed separately. Unknown means there is insufficient evidence for that particular field.

AI watermarking
Yes. Google documents SynthID for audio outputs of the listed Gemini Audio models.
Source: AI watermarking
Watermarking technique
SynthID
Source: Watermarking technique
Labelling reviewed
Nov 5, 2026
Source: Labelling reviewed

Licence and access

API

API model ID
gemini-3.8-live-extended-thinking
Source: API model ID

Further details

Task
Voice dialogue with reasoning
Source: Task
Supported details
Extended background reasoning
Source: Supported details
Input limit
131,072 tokens
Source: Input limit
Output limit
65,536 tokens
Source: Output limit

Prices

Text input price
$0.75 per 1M text tokensSource
Audio input price
$3 per 1M audio tokens ($0.005 per audio minute)Source
Text output price
$4.50 per 1M text tokensSource
Audio output price
$12 per 1M audio tokens ($0.018 per audio minute)Source
Pricing basis
Paid Standard tier, prices in USD. Per-minute rates are estimates based on token usage, not fixed per-minute charges.Source

Sources and data date

Show all 28 sources

Benchmark sources at a glance

Which independent evaluators tested this model. This is coverage, not a quality ranking.

No active result from the reviewed external evaluators can currently be attributed to this model. Other source evidence remains available below.

Without vendor claims and historical or disputed results; those stay labelled in the single values.

TypeEvidence and data date
Research statusResearch date October 15, 2026. 21 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication.
Not published

per-mode-metric-denominator-and-serving-revision

Note

Per-metric denominator per reasoning mode, confidence interval and immutable backend revision are not published.

Not published

Gemini Live Extended Thinking TTFA N and serving revision

Note

Artificial Analysis does not publish per-model N, CI, or pinned serving revision for this latency row.

Unresolved

Sierra τ³-Banking evaluator record and configuration

Note

Only Google's official chart caption was found; no direct Sierra result row or task configuration was captured, and the chart does not disclose reasoning effort, N, CI, or serving revision.

Not published

mivas-metric-specific-n-ci-and-result-revision

Note

MIVAS does not publish metric-specific N, confidence intervals or an immutable result-code revision for the cross-industry metrics.

Additional sourceGoogle Gemini model documentation (retrieved September 24, 2026; October 15, 2026; October 17, 2026; October 20, 2026) · Google Gemini 3.8 Live Extended Thinking model documentation · Editorial description reviewed October 2, 2026
Additional sourceOfficial API pricing (retrieved October 25, 2026)
Additional sourceArtificial Analysis (retrieved October 15, 2026; October 17, 2026; October 28, 2026)
Additional sourceArtificial Analysis (retrieved October 15, 2026; October 28, 2026)
Additional sourceSpeko speech-to-speech concierge benchmark (retrieved October 17, 2026; October 20, 2026)
Additional sourceGoogle DeepMind Gemini Audio performance chart (retrieved October 17, 2026)
Additional sourceCekura speech-to-speech benchmark (retrieved October 17, 2026)
Additional sourceCekura TurnBench (retrieved October 17, 2026; October 23, 2026)
Additional sourceBluejay MIVAS (retrieved October 17, 2026; October 20, 2026)
Additional sourceCekura speech-to-speech agent benchmark (retrieved October 18, 2026)
Additional sourceSpeko (retrieved October 17, 2026; October 28, 2026)
Additional sourceModel metadata (retrieved October 15, 2026; October 28, 2026)
Additional sourceModel metadata (retrieved October 17, 2026)
Additional sourceModel metadata (retrieved October 20, 2026)
Additional sourceModel metadata (retrieved October 28, 2026)1234567
Additional sourceGoogle DeepMind Gemini Audio (retrieved November 5, 2026)
Additional sourceOpenRouter: Popularity index (derived), CC BY 4.0
Additional sourceVercel AI Gateway: Popularity index (derived), CC BY 4.0
Additional sourceOllama: cumulative downloads for the popularity index
Additional sourceReplicate: cumulative runs for the popularity index
Additional sourceGoogle Trending Now: limited feed selection for Germany and the US
Additional sourceCreative Commons Attribution 4.0