LLMgoogle

Google: Gemini 3.8 Flash (batch)

Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

Anyone in the Project can @-mention Google: Gemini 3.8 Flash (batch) with the team's shared context - pooled credits, one chat, one memory.

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Starter is free forever - 1 Project, 100 credits/month, 1 MCP. No card.

Verdict

Gemini 3.8 Flash Batch trades real-time responsiveness for dramatic cost savings — $0.38/Mtok input makes it the cheapest multimodal model in Google's lineup. It handles text, images, video, audio, and files across a million-token context window, but batch processing means jobs queue for up to 24 hours. Reach for this when you're processing large datasets overnight and cost matters more than latency.

Best for

  • Overnight batch processing of large datasets
  • Cost-sensitive multimodal document analysis
  • Video content summarization at scale
  • Audio transcription with visual context
  • High-volume file processing workflows

Strengths

The pricing structure makes this the most economical way to run multimodal inference at scale — input costs are roughly 75% lower than real-time Gemini Flash variants. The million-token context window handles feature-length videos, multi-hour audio recordings, or hundreds of documents in a single request. Native support for five modalities means you can mix screenshots, PDFs, audio clips, and video frames without preprocessing or separate API calls.

Trade-offs

Batch processing introduces unpredictable latency — jobs can take up to 24 hours to complete, making this unsuitable for interactive applications or time-sensitive workflows. Without public benchmarks, quality comparisons to Gemini 2.0 Flash or competitors remain unclear. The model lacks the real-time streaming capabilities that make Flash variants useful for chat interfaces or live transcription, and you sacrifice the ability to iterate quickly during prompt development.

Specifications

Provider
google
Category
llm
Context length
1,048,576 tokens
Max output
65,536 tokens
Modalities
text, image, video, file, audio
License
proprietary
Released
2026-09-02

Pricing

Input
$0.38/Mtok
Output
$1.88/Mtok
Model ID
google/gemini-3.8-flash:batch

Per-token prices show what the model costs upstream. On Switchy your team draws from one shared org credit pool - one plan, one balance for everyone.

Team cost calculator

Estimated monthly spend
$14.52
17.6M tokens / month
5 seats · 80 msgs/day

Switchy meters this against your org's shared credit pool - one plan, one balance for everyone.

Providers

ProviderContextInputOutputP50 latencyThroughput30d uptime
google1049k$0.38/Mtok$1.88/Mtok———

Performance

Performance snapshots are collected daily. Check back after the next ingestion run.

Benchmarks

Public benchmark scores are not available yet for this model. Check back after the next ingestion run.

Works well with

Top MCPs

Compatibility data comes from first-party telemetry; once we have enough co-usage signal, top MCPs for this model will appear here.

How Switchy teams use it

Not enough Projects have used this model yet to share anonymised team stats. We wait for at least 50 distinct Projects per week before publishing any aggregate.

Starter prompts

Batch Video Summarization

Watch these three product demo videos and create a comparison table showing features mentioned, demo duration, and target audience for each. Include timestamps for key feature reveals.

Multi-Document Synthesis

Review these 47 customer support tickets (PDFs and screenshots) from last quarter. Identify the top 5 recurring issues, quote specific examples, and flag any tickets where our response contradicted our documentation.

Audio-Visual Transcription

Transcribe this 90-minute board meeting video. When speakers reference slides or charts, describe what's shown on screen and link it to their verbal points. Note any discrepancies between spoken claims and displayed data.

Large-Scale File Classification

Process this folder of 200+ files (images, PDFs, audio clips). For each file, extract: document type, creation date if visible, primary subject matter, and whether it contains PII. Output as CSV.

Cross-Modal Content Verification

Compare these 12 marketing claims in the PDF against the product screenshots and demo video provided. Flag any claims not visibly supported by the media, and note features shown in media but not mentioned in copy.

Example outputs

Illustrative - representative of the model's voice and quality, not literal recordings.

Prompt

Analyze this 45-minute earnings call transcript and extract: (1) three revenue growth drivers mentioned, (2) any forward guidance changes, (3) analyst sentiment shifts. Format as a structured summary.

Output

This example would produce a clean three-section summary. Revenue drivers: the model identifies product line expansions in APAC (mentioned at 12:40), a new enterprise tier launch (18:22), and improved retention metrics (31:05). Forward guidance: Q4 revenue range revised upward from $280-290M to $295-305M, citing stronger pipeline conversion. Analyst sentiment: tone shifted cautiously optimistic after the CFO addressed margin pressure concerns; two analysts upgraded price targets mid-call. The model maintains transcript timestamps and distinguishes management statements from analyst questions throughout.

Notes

The 1M+ token context window handles full earnings transcripts without chunking, preserving cross-references between sections. Batch processing at $0.38/Mtok input makes this economical for weekly analyst workflows. Output structure is consistent but occasionally merges related points — you may need a follow-up prompt to separate overlapping themes.

Prompt

Review this 8-page product spec PDF and this 22-minute design review recording. Flag any requirements the design doesn't address, then suggest three UI improvements that would close those gaps.

Output

This example would produce a gap analysis followed by actionable recommendations. Unaddressed requirements: the spec mandates offline mode (section 3.2) but the design shows no local storage UI; accessibility targets (section 5.1) require keyboard navigation that isn't visible in the prototype; the API rate limit handling (section 4.3) has no user-facing error state. Suggested improvements: (1) add a sync status indicator in the header with offline queue visibility, (2) implement focus trapping in the modal flows shown at 14:30 in the recording, (3) design a toast notification system for API errors with retry actions. Each suggestion references the spec section it addresses.

Notes

Multimodal input (PDF + video) lets the model cross-reference static requirements against dynamic design walkthroughs. At $1.88/Mtok output, longer responses cost more than text-only models, but the batch API offsets this for non-urgent reviews. The model occasionally misses subtle design details visible only in video — verify UI element claims against your own review.

Prompt

I'm attaching 140 customer support tickets from Q3. Cluster them by root cause, rank clusters by revenue impact, and draft a one-page executive brief explaining what engineering should prioritize next quarter.

Output

This example would produce a data-driven brief with three sections. Cluster analysis: 38 tickets (27%) trace to the payment retry logic failing on expired cards—estimated $180K MRR at risk; 31 tickets (22%) report mobile app crashes on Android 12+ during file uploads—affecting 15% of mobile users; 24 tickets (17%) describe confusing onboarding flow for enterprise SSO—correlates with 40% drop-off in trial-to-paid conversion for teams over 50 seats. Remaining tickets scatter across minor bugs. Recommendation: prioritize payment retry fix (2-week eng effort, highest revenue protection), then SSO onboarding redesign (4-week effort, unlocks enterprise segment growth). The brief includes a simple table mapping each cluster to affected user count and revenue exposure.

Notes

Batch processing 140 tickets at once reveals patterns that per-ticket analysis misses, and the 1M token window accommodates the full dataset without sampling. The model infers revenue impact from ticket metadata (plan tiers, user counts) but can't access your actual revenue database—validate financial estimates against internal data before presenting to leadership.

Use-case deep-dives

Overnight document batch processing

When batch pricing makes overnight doc analysis viable for small teams

A 4-person legal tech startup needs to extract clauses from 200-500 contracts nightly, feeding a compliance dashboard by 6 AM. Gemini 3.8 Flash batch hits the sweet spot: the 1M token context window handles full contracts without chunking, multimodal support parses scanned PDFs and images inline, and $0.38/Mtok input pricing means a 500-doc run costs under $40. The batch queue adds 10-30 minute latency, but that's invisible when you're running overnight cron jobs. If you need sub-minute turnaround or real-time user responses, this isn't your model—switch to standard Gemini Flash. But for any workflow where you can queue work and wait, batch pricing turns a $200/night bill into $40 without sacrificing context or accuracy.

Video content moderation pipeline

How multimodal batch cuts video review costs by 80% at scale

A 12-person creator platform moderates 3,000 user-uploaded videos per day, flagging policy violations before publish. Standard video analysis APIs run $0.15-0.25 per video; Gemini 3.8 Flash batch drops that to $0.03-0.05 by accepting delayed processing. The model ingests video, audio, and text prompts in one call, so you're not stitching together separate transcription and vision services. At 3k videos/day, that's $1,500/month instead of $7,500. The catch: batch latency means videos sit in a queue for 15-45 minutes. If your platform promises instant publish, you need real-time inference. But if you can hold uploads in review for an hour, batch pricing makes video moderation economically feasible for teams under 15 people.

Monthly financial report generation

When 1M token context eliminates chunking in multi-source reporting

A 6-person fintech aggregates transaction data, PDFs, and spreadsheets into investor reports once a month. Each report pulls from 40-60 files totaling 800k-950k tokens. Gemini 3.8 Flash batch's 1M context window means you load everything in one prompt—no RAG pipeline, no chunking logic, no retrieval errors. At $0.38/Mtok input, a 900k token job costs $0.34; output at $1.88/Mtok adds another $1-2 for a 15-page summary. Total per-report cost: under $3. The batch queue adds 20-40 minutes, but monthly reporting has zero time pressure. If you're generating reports hourly or need instant answers, pay for standard inference. For monthly or weekly cadences, batch mode turns a complex RAG problem into a single API call at 5% the cost.

Frequently asked

Is Gemini 3.8 Flash batch good for processing large documents?

Yes, with a 1M+ token context window, Gemini 3.8 Flash batch handles entire codebases, long PDFs, and multi-hour transcripts in one pass. The batch mode trades latency for cost—expect minutes to hours for results, not seconds. If you need real-time responses, use the standard Flash variant instead.

Is Gemini 3.8 Flash batch cheaper than GPT-4o?

Significantly cheaper. At $0.38 input per Mtok, it's roughly 75% less expensive than GPT-4o for input tokens. Output at $1.88/Mtok is also competitive for batch workloads. The trade-off is batch-only processing—you queue jobs and wait, so it's not for interactive use cases.

Can Gemini 3.8 Flash batch process video and audio files?

Yes, it supports video, audio, images, and files natively alongside text. This makes it useful for transcription analysis, video content moderation, or multi-modal document processing. Just remember batch mode means you're not streaming results—submit the job, then retrieve output when complete.

How does Gemini 3.8 Flash batch compare to Claude Sonnet for cost?

Gemini 3.8 Flash batch undercuts Claude Sonnet 4 on input ($0.38 vs $3/Mtok) by nearly 90%, making it ideal for high-volume analysis jobs. Sonnet still wins on reasoning quality for complex tasks, but if you're processing thousands of documents where cost matters more than nuance, Flash batch is the obvious pick.

Should I use Gemini 3.8 Flash batch for background data processing?

Absolutely. Batch mode is purpose-built for non-urgent jobs like nightly report generation, bulk content classification, or dataset labeling. The pricing makes it viable to process millions of tokens daily. Just architect your system to handle async results—don't expect sub-second responses like you'd get from streaming APIs.

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Data last verified 13 hours ago.Sources aggregated hourly to weekly. See docs/architecture/model-directory.md.