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Google: Gemini 3 Flash Preview vs Mistral: Mistral Large 4

Neither wins outright: Google: Gemini 3 Flash Preview is the pick when cost matters at scale, Mistral: Mistral Large 4 when you need log-probabilities.

Key numbers

SpecGoogle: Gemini 3 Flash PreviewMistral: Mistral Large 4
ProviderGoogleMistral AI
Input price (per 1M tokens)$0.50$1.36
Output price (per 1M tokens)$3.00$4.18
Blended price (3:1 input/output)$1.13$2.06
Cheaper than … of all models we track36%25%
Context window1.0M tokens (~1,573 pages)1.0M tokens (~1,573 pages)
Larger context than … of all models80%80%
Max output per response66K tokens (~49,200 words)262K tokens (~196,600 words)
Input typestext, image, file, audio, videotext, image
Output typestexttext
Free variantNoNo
Listed since2025-12-172026-10-06
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What it costs for real workloads

Monthly cost at list price for five common workloads. Token counts per unit are stated so you can scale them to your own traffic. A workload that does not fit a model's context window is marked rather than priced.

Workload (per month)Google: Gemini 3 Flash PreviewMistral: Mistral Large 4Difference
Customer-support chatbot
50,000 conversations — each a 6-turn conversation (1,500 in / 400 out tokens)
$97.50$186Google: Gemini 3 Flash Preview saves $88.10
RAG search over documents
20,000 questions — each a question answered from ~8 retrieved passages (6,000 in / 500 out tokens)
$90.00$205Google: Gemini 3 Flash Preview saves $115
Coding / tool-using agent
2,000 tasks — each a multi-step task with tool calls and file context (60,000 in / 6,000 out tokens)
$96.00$213Google: Gemini 3 Flash Preview saves $117
Batch summarisation
10,000 documents — each a 6,000-word report summarised to a page (8,000 in / 600 out tokens)
$58.00$134Google: Gemini 3 Flash Preview saves $75.88
Long-document analysis
500 documents — each a 150-page contract or codebase read in one pass (100,000 in / 2,000 out tokens)
$28.00$72.18Google: Gemini 3 Flash Preview saves $44.18

Capabilities side by side

CapabilityGoogle: Gemini 3 Flash PreviewMistral: Mistral Large 4What it lets you do
Tool / function calling✓ Yes✓ Yescall your APIs and run agent loops
Structured output (JSON schema)✓ Yes✓ Yesreturn JSON that validates against your schema
Reasoning / thinking mode✓ Yes✓ Yesspend extra tokens thinking before answering hard problems
Image input✓ Yes✓ Yesread screenshots, charts and scanned pages
Audio input✓ Yes—take speech or audio directly
File / PDF input✓ Yes—accept documents without your own parsing step
Image output——generate images, not just text
Built-in web search✓ Yes—answer from live web results
Seed (reproducible sampling)✓ Yes✓ Yesrepeat a generation for tests and evals
Log-probabilities—✓ Yesread token confidence for classification and scoring

From each model's published parameters and input/output types. “—” means not advertised, not proven absent.

Price history

DateModelInput / 1MOutput / 1M
2026-10-21Mistral: Mistral Large 4$1.36$4.18

Which should you choose?

Choose Google: Gemini 3 Flash Preview if…

  • cost matters at scale — it is 46% cheaper on a typical 3:1 input/output mix ($97.50 vs $186 a month for 50,000 support chats)
  • you need audio input — to take speech or audio directly; Mistral: Mistral Large 4 does not advertise it
  • you need file / PDF input — to accept documents without your own parsing step; Mistral: Mistral Large 4 does not advertise it
  • you need built-in web search — to answer from live web results; Mistral: Mistral Large 4 does not advertise it

Choose Mistral: Mistral Large 4 if…

  • you need log-probabilities — to read token confidence for classification and scoring; Google: Gemini 3 Flash Preview does not advertise it
  • you generate long outputs in one go — up to 262K tokens (about 196,600 words) per response
  • you want the newer model — released 2026-10-06, 10 months after the other

Frequently asked questions

Is Google: Gemini 3 Flash Preview better than Mistral: Mistral Large 4?

Neither wins outright: Google: Gemini 3 Flash Preview is the pick when cost matters at scale, Mistral: Mistral Large 4 when you need log-probabilities. In short: Google: Gemini 3 Flash Preview when cost matters at scale, you need audio input, you need file / PDF input, you need built-in web search; Mistral: Mistral Large 4 when you need log-probabilities, you generate long outputs in one go, you want the newer model.

Which is cheaper, Google: Gemini 3 Flash Preview or Mistral: Mistral Large 4?

Google: Gemini 3 Flash Preview is cheaper: $1.13 vs $2.06 per 1M tokens at a typical 3:1 input/output mix, 46% less. For 50,000 support conversations a month that is $97.50 against $186.

How much do Google: Gemini 3 Flash Preview and Mistral: Mistral Large 4 cost per million tokens?

Google: Gemini 3 Flash Preview costs $0.50 per 1M input tokens and $3.00 per 1M output tokens; Mistral: Mistral Large 4 costs $1.36 input and $4.18 output. Output tokens are billed separately, so long answers shift the gap.

Which has the bigger context window, Google: Gemini 3 Flash Preview or Mistral: Mistral Large 4?

Both take 1.0M tokens per request — roughly 1,573 pages of text.

Do Google: Gemini 3 Flash Preview and Mistral: Mistral Large 4 support function calling and JSON output?

Tool calling — Google: Gemini 3 Flash Preview: yes, Mistral: Mistral Large 4: yes. JSON-schema structured output — Google: Gemini 3 Flash Preview: yes, Mistral: Mistral Large 4: yes.

Can Google: Gemini 3 Flash Preview or Mistral: Mistral Large 4 read images?

Yes, both accept image input.

Is Google: Gemini 3 Flash Preview or Mistral: Mistral Large 4 free to use?

No free variant is listed for either; both are pay-per-token.

What is the maximum output length of Google: Gemini 3 Flash Preview and Mistral: Mistral Large 4?

Google: Gemini 3 Flash Preview can write up to 66K tokens (about 49,200 words) per response; Mistral: Mistral Large 4 up to 262K (about 196,600 words).

When were Google: Gemini 3 Flash Preview and Mistral: Mistral Large 4 released?

Google: Gemini 3 Flash Preview was listed on 2025-12-17; Mistral: Mistral Large 4 on 2026-10-06.

Has the price of Google: Gemini 3 Flash Preview or Mistral: Mistral Large 4 changed?

Google: Gemini 3 Flash Preview: price unchanged since we started tracking it on 2026-03-10. Mistral: Mistral Large 4: input price raised 50% ($0.68 → $1.36/1M), output price raised 50% ($2.09 → $4.18/1M) on 2026-10-21.

About the two models

Compare Google: Gemini 3 Flash Preview with other models

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Compare Mistral: Mistral Large 4 with other models

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