Google's latency-led live model is the default candidate for most real-time voice-agent pilots. Its published per-minute audio rate is only a component price, so HubAI withholds a score until interruption quality, accepted-call completion, language coverage, recovery and complete cost are tested independently.
BEST FORLow-latency voice and vision agents where interruption handling, live context and background tool calls matterNOT IDEAL FORKnown foundation-model errors, occasional slowness and timeouts still apply
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Price
$0.005/min audio input and $0.018/min audio output at the published standard API rate; text, image/video, grounding and the surrounding call stack may add cost · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.
Access
A free Gemini API tier is listed; quotas, account eligibility and product-surface availability vary
EDITORIAL PROFILEIndependently structuredPRICING CHECKSeparate check not recordedDISCLOSURENo pay-to-win score
BEFORE YOU BUY
Gemini 3.8 Live: evidence before purchase
What we can verify
Supplier information and independent test results are separate. Check the linked product and pricing sources before purchase.
What an independent test needs to cover
Test output accuracy, retries, reviewer effort, data handling and total cost using the pilot below. No completion date is scheduled; a score will require a published method and results.
Supplier facts recorded
19 September 2026
Recheck required: more than 30 days since check. This is not an independent test date.
Methodology checked on
Price and UK access check
$0.005/min audio input and $0.018/min audio output at the published standard API rate; text, image/video, grounding and the surrounding call stack may add cost · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.
Google releases Gemini 3.8 Live and Extended Thinking
Voice-agent teams now have a latency-led default and a deeper-reasoning option at published API rates, but complete resolved-call cost and quality still require a same-flow test.
Google's latency-led live model is the default candidate for most real-time voice-agent pilots. Its published per-minute audio rate is only a component price, so HubAI withholds a score until interruption quality, accepted-call completion, language coverage, recovery and complete cost are tested independently.
WHAT IT IS
Gemini 3.8 Live, explained.
Gemini 3.8 Live is designed for low-latency voice and vision agents where interruption handling, live context and background tool calls matter. HubAI treats it as a workflow purchase rather than a novelty: the relevant question is whether it produces an acceptable result repeatedly, with controls your team can understand and a cost that remains predictable after the trial ends.
Best forLow-latency voice and vision agents where interruption handling, live context and background tool calls matterTrialA free Gemini API tier is listed; quotas, account eligibility and product-surface availability vary
60-SECOND BUYING DECISION
Where Gemini 3.8 Live fits—and where it does not.
BUY FOR
Low-latency voice and vision agents where interruption handling, live context and background tool calls matter
MEASURE
approved minutes of natural, correctly pronounced audio with documented voice rights
MAIN TRADE-OFF
Known foundation-model errors, occasional slowness and timeouts still apply
PROOF TEST
Use one approved 60-second script containing names, numbers and difficult pronunciation.
PRODUCT PROOF
See the workflow before you buy.
PROFILE REVIEW · 19 SEPTEMBER 2026
GLGoogle AI Studio and the official Gemini Live API examples; model code gemini-3.8-live
01
Bring one representative input
02
Run the same job three times
03
Measure accepted output and cost
DATA & PRIVACY
The Developer API pricing page distinguishes the free tier, whose submitted content may be used to improve products, from the paid tier, whose submitted content is not. Verify the contracted Google Cloud or Gemini route, retention, logging, recording consent and administrator controls before using customer conversations or sensitive visual context.
DEPLOYMENT
gemini-3.8-live through the Gemini API and Google AI Studio. The Live API uses stateful WebSockets, supports audio, image and text input, and recommends ephemeral tokens for production client-to-server connections. Consumer, Workspace and enterprise availability varies by route and rollout.
WORKS WITH
Gemini Live API · Google AI Studio · Function calling · Google Search grounding · WebSocket media stack
EDITORIAL STATUS
Vendor facts and HubAI opinion are separated. Sponsored placement cannot buy a higher score.
HUBAI PROCUREMENT PASSPORT
A buying record your team can challenge.
One compact record for price, access, data handling, deployment and the test that must pass before adoption.
BUY FORLow-latency voice and vision agents where interruption handling, live context and background tool calls matterCOMMERCIAL ROUTE$0.005/min audio input and $0.018/min audio output at the published standard API rate; text, image/video, grounding and the surrounding call stack may add cost · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.A free Gemini API tier is listed; quotas, account eligibility and product-surface availability vary
DATA & PRIVACYNeeds buyer verification
The Developer API pricing page distinguishes the free tier, whose submitted content may be used to improve products, from the paid tier, whose submitted content is not. Verify the contracted Google Cloud or Gemini route, retention, logging, recording consent and administrator controls before using customer conversations or sensitive visual context.
DEPLOYMENTRoute mapped
gemini-3.8-live through the Gemini API and Google AI Studio. The Live API uses stateful WebSockets, supports audio, image and text input, and recommends ephemeral tokens for production client-to-server connections. Consumer, Workspace and enterprise availability varies by route and rollout.
INTEGRATIONS5 named routes
Gemini Live API · Google AI Studio · Function calling · Google Search grounding · WebSocket media stack
PROOF TESTRequired before scale
Run a fixed set of representative calls against both Gemini routes and one alternative. Record task completion, interruption recovery, language and accent errors, tool failures, timeout recovery, escalation time and every provider, telephony and infrastructure charge.
STRENGTHS
What earns its shortlist place.
+01
Streams voice and visual context with interruption support
Why it matters: reduces narration turnaround.
+02
Can continue the conversation while asynchronous tool calls run
Why it matters: enables multilingual variants.
+03
Published API model code, free tier and standard audio rates
Why it matters: makes tone testing faster.
LIMITATIONS
What can break the business case.
−01
Known foundation-model errors, occasional slowness and timeouts still apply
Buyer impact: creates material consent and misuse risk.
−02
Published language figures differ by feature and must be checked for the intended flow
Telephony, infrastructure, grounding, tools and human escalation can exceed the headline audio rate
Buyer impact: does not replace professional audio finishing.
Cost reality
The subscription price is only the starting point. HubAI evaluates usage limits, failed attempts and the work needed to produce one usable result. Pricing changes frequently, so the structure and verification date matter more than a headline price.
PRICING DECODER
Budget for the result, not the plan badge.
Published structure
$0.005/min audio input and $0.018/min audio output at the published standard API rate; text, image/video, grounding and the surrounding call stack may add cost · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.
Free or trial route
A free Gemini API tier is listed; quotas, account eligibility and product-surface availability vary
Primary cost driver
characters or generated minutes, voice tier, dubbing languages and retakes
Budget test
Record the total cost, attempts and human correction needed to produce ten accepted results.
Separate pricing check date: not recorded. Profile review: 19 September 2026. Confirm live price, VAT, region, usage rights and cancellation terms with the vendor before purchase.
HUBAI TRUE COST LAB
What does one accepted result really cost?
Model your own usage. HubAI separates subscription cost from retries and human review—without pretending a headline plan price tells the whole story.
DERIVED VALUE · EFFECTIVE COST / ACCEPTED OUTPUT£3.414286Human review dominates
Test this job with your own inputs and judge the finished result—not the first draft.
02
Create a first draft for human review
Test this job with your own inputs and judge the finished result—not the first draft.
03
Compare time and cost against the current workflow
Test this job with your own inputs and judge the finished result—not the first draft.
A safer four-step trial
Start with one narrow job that matches Gemini 3.8 Live's strongest use case.
Prepare approved source material, examples and a clear acceptance standard.
Run three realistic tasks and record attempts, correction time and export quality.
Keep human approval before publishing, sending or acting on the result.
READY-TO-USE PROMPTS
Start with a better brief.
01Act as a specialist in voice ai. Ask me three questions before creating the first draft. The outcome I need is: [describe outcome].
02Create two approaches for [task]. Use this audience: [audience]. Respect these constraints: [constraints]. Explain the trade-off between the two approaches.
03Review this output against accuracy, tone, privacy, cost and usability. List the changes required before a person should approve it.
RISK & GOVERNANCE
What to check before adoption.
Do not place confidential, personal or rights-restricted material into Gemini 3.8 Live until your organisation has reviewed its current terms, retention settings and account controls. AI output can be plausible and still wrong; regulated, financial, legal and employment decisions require qualified human review.
HUBAI REVIEW RECORD
What HubAI checked—and when.
This is HubAI's editorial record, not the vendor's product changelog or a live uptime claim.
04 SEP 2026
Decision layer expanded
Use-case routes, relevant comparisons and alternatives connected to the product profile.
03 SEP 2026
Commercial profile reviewed
Entry price structure, free or trial route and buyer limitations checked for editorial use.
19 September 2026
Editorial profile published
Verdict, best fit, strengths, limitations, prompts and governance questions structured.
Low-latency voice and vision agents where interruption handling, live context and background tool calls matter
$0.005/min audio input and $0.018/min audio output at the published standard API rate; text, image/video, grounding and the surrounding call stack may add cost · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.
A free Gemini API tier is listed; quotas, account eligibility and product-surface availability vary
Teams evaluating real-time transcription and multilingual speech generation through Microsoft Foundry or Azure Speech
MAI-Transcribe-2-Streaming: introductory $0.54 per audio hour through the end of 2026; MAI-Voice-2.1: $22 per 1M characters; MAI-Voice-2.1-Flash: $15 per 1M characters · Profile record only; separate pricing check not recorded: 2 October 2026. USD list price; UK price/VAT to confirm.
Public preview without an SLA; Foundry playground and Azure routes require an eligible account and resource. Voice models are documented as globally accessible, with en-GB voices and European serving regions
Higher-complexity live conversations that need background reasoning and multi-step tool coordination without a silent pause
$0.005/min audio input and $0.018/min audio output at the published standard API rate; thinking is included in output pricing and complete workflow cost can be higher · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.
A free Gemini API tier is listed; enterprise access begins in private preview and Workspace or consumer access depends on plan and rollout
Natural real-time voice agents that need interruption handling, long sessions and delegated reasoning or tool use
$0.05 per minute for the front-end voice layer; backend models, tools, telephony and infrastructure are additional · Profile record only; separate pricing check not recorded: 11 September 2026. USD list price; UK price/VAT to confirm.
No separate API free trial announced; a time-limited official web demo is available
Gemini 3.8 Live is best suited to low-latency voice and vision agents where interruption handling, live context and background tool calls matter. HubAI's current verdict is: Google's latency-led live model is the default candidate for most real-time voice-agent pilots. Its published per-minute audio rate is only a component price, so HubAI withholds a score until interruption quality, accepted-call completion, language coverage, recovery and complete cost are tested independently.
Does Gemini 3.8 Live have a free plan or trial?
A free Gemini API tier is listed; quotas, account eligibility and product-surface availability vary. Check the official product page before buying because allowances, regions and eligibility can change.
How much does Gemini 3.8 Live cost?
$0.005/min audio input and $0.018/min audio output at the published standard API rate; text, image/video, grounding and the surrounding call stack may add cost · Profile record only; separate pricing check not recorded: 19 September 2026. USD list price; UK price/VAT to confirm.. The useful comparison is total cost per accepted result, including retries, limits and human correction—not the advertised entry price alone.
What should I compare with Gemini 3.8 Live?
Compare products in the same Audio AI shelf against one identical task, acceptance rule and cost window. Focus on approved minutes of natural, correctly pronounced audio with documented voice rights.