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Gemini 3.1 Flash Lite Preview vs Mistral Medium 3

Gemini 3.1 Flash Lite Preview leads Mistral Medium 3 on the Artificial Analysis Intelligence Index, 15.6 to 9.0, and Gemini 3.1 Flash Lite Preview costs 1.3x less per output token ($1.50 vs $2.00 per million). Updated October 21, 2026; 45 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Preview Replace Mistral Medium 3
Gemini 3.1 Flash Lite PreviewGoogle
Coding
22.7
Overall
36.6
Output $/M
$1.50
44
Mistral Medium 3Mistral AI
Coding
No data
Overall
No data
Output $/M
$2.00
1
vs boards won of 45 shared

Gemini 3.1 Flash Lite Preview or Mistral Medium 3: which to pick

Only Gemini 3.1 Flash Lite Preview has a coding score, 22.7 on the Vibe Coding Index; Mistral Medium 3 has none, so the two cannot be ranked on coding.

Pick Mistral Medium 3 for work measured by Design Arena: 3D, where it leads.

Model AGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved taskModel BMistral Medium 3Mistral AINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
45
Gemini 3.1 Flash Lite Preview only
34
Mistral Medium 3 only
12
Like-for-like categories
7 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks, Mistral Medium 3 not benchmarked.
Widest category
General, 12.5 points apart on average over 25 shared benchmarks.
Widest single gap
LMArena Vision: recognizing things: Gemini 3.1 Flash Lite Preview 1308 against Mistral Medium 3 1141, 27.8 points apart on a 0 to 100 scale.
Output price
Gemini 3.1 Flash Lite Preview $1.50 against Mistral Medium 3 $2.00 per million output tokens, 1.3x apart.
Context window
Gemini 3.1 Flash Lite Preview takes 1.05M tokens, Mistral Medium 3 131K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGemini 3.1 Flash Lite PreviewBarsMistral Medium 3Ties
Coding20
Intelligence10
Reasoning50
Math20
Knowledge40
Web design51
General250
All shared boards441
CodingLike-for-likeSix of these boards feed the Vibe Coding Index20
Coding benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
LMArena WebDev1257Not measuredOnly Gemini 3.1 Flash Lite Preview measured
AA Coding Index34.7Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LiveCodeBench (Vals AI)80.1%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
SWE-bench Verified (Vals AI)62.8%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Vibe Code Bench (Vals AI)0.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Code migration (Vals AI)4.6%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
ProgramBench (Vals AI)0.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Terminal-Bench 2.1 (Vals AI)34.1%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LiveCodeBench (Artificial Analysis run)Not measured40.0%Only Mistral Medium 3 measured
Terminal-Bench Hard (Artificial Analysis run)Not measured3.8%Only Mistral Medium 3 measured
ALE-Bench797.7Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena Text: coding14001385Gemini 3.1 Flash Lite Preview
LMArena Text: software and IT14131385Gemini 3.1 Flash Lite Preview
LMArena WebDev: React1245Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena WebDev: HTML1276Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LMArena WebDev: from an image1336Not measuredOnly Gemini 3.1 Flash Lite Preview measured
SciCode4.6%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 22 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
AA Intelligence Index15.69.0Gemini 3.1 Flash Lite Preview
Epoch Capabilities IndexNot measured134.0Only Mistral Medium 3 measured
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
Agentic work benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
AA Agentic Index1.6Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Finance Agent (Vals AI)30.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Tax Agent Bench (Vals AI)3.1%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Legal Research Bench (Vals AI)3.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Excel Modeling Benchmark (Vals AI)8.6%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
τ²-Bench TelecomNot measured24.3%Only Mistral Medium 3 measured
Neither model has a result on the other 35 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index50
Reasoning benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
GPQA Diamond81.1%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
MMMU Pro (Vals AI)82.5%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
GPQA Diamond (Artificial Analysis run)Not measured57.8%Only Mistral Medium 3 measured
Humanity's Last Exam (Artificial Analysis run)Not measured4.1%Only Mistral Medium 3 measured
LMArena Text: hard prompts14071364Gemini 3.1 Flash Lite Preview
LMArena Text: expert13981342Gemini 3.1 Flash Lite Preview
LMArena Text: hard prompts in English14031374Gemini 3.1 Flash Lite Preview
LMArena Vision: diagrams12421155Gemini 3.1 Flash Lite Preview
LMArena Vision: homework12711165Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 13 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index20
Math benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
AIME83.3%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
AA Math IndexNot measured30.3Only Mistral Medium 3 measured
AIME 2025 (Artificial Analysis run)Not measured30.3%Only Mistral Medium 3 measured
LMArena Text: math14281353Gemini 3.1 Flash Lite Preview
LMArena Text: mathematical work14171354Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 8 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
Knowledge benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
MMLU Pro86.2%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
LegalBench (Vals AI)83.8%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
CaseLaw (Vals AI)55.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
CorpFin (Vals AI)59.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
TaxEval (Vals AI)71.8%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
MortgageTax (Vals AI)68.0%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
MedCode (Vals AI)47.6%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
MMLU Pro (Artificial Analysis run)Not measured76.0%Only Mistral Medium 3 measured
LMArena Text: science14251381Gemini 3.1 Flash Lite Preview
LMArena Text: medicine and healthcare14281381Gemini 3.1 Flash Lite Preview
LMArena Text: legal and government14181384Gemini 3.1 Flash Lite Preview
LMArena Text: business and finance13891352Gemini 3.1 Flash Lite Preview
FACTS Benchmark Suite51.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index51
Web design benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
Design Arena: websites10831079Gemini 3.1 Flash Lite Preview
Design Arena: UI components10721024Gemini 3.1 Flash Lite Preview
Design Arena: game dev10291018Gemini 3.1 Flash Lite Preview
Design Arena: data viz10451034Gemini 3.1 Flash Lite Preview
Design Arena: 3D10481084Mistral Medium 3
Design Arena: all code categories10721069Gemini 3.1 Flash Lite Preview
Design Arena: SVG1052Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Design Arena: ASCII art1167Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index250
General benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
SAGE (Vals AI)49.5%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
MedScribe (Vals AI)63.9%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
Vals Multimodal Index41.4%Not measuredOnly Gemini 3.1 Flash Lite Preview measured
IFBenchNot measured39.3%Only Mistral Medium 3 measured
Long context reasoning (AA-LCR)Not measured31.3%Only Mistral Medium 3 measured
DTBenchNot measured62.3%Only Mistral Medium 3 measured
LMArena Text14161370Gemini 3.1 Flash Lite Preview
LMArena Text: instruction following13771338Gemini 3.1 Flash Lite Preview
LMArena Text: creative writing14011343Gemini 3.1 Flash Lite Preview
LMArena Vision12401157Gemini 3.1 Flash Lite Preview
LMArena Text: English14141385Gemini 3.1 Flash Lite Preview
LMArena Text: non-English14101353Gemini 3.1 Flash Lite Preview
LMArena Text: Chinese14601374Gemini 3.1 Flash Lite Preview
LMArena Text: German14301377Gemini 3.1 Flash Lite Preview
LMArena Text: Japanese14131316Gemini 3.1 Flash Lite Preview
LMArena Text: Korean13921304Gemini 3.1 Flash Lite Preview
LMArena Text: French14241368Gemini 3.1 Flash Lite Preview
LMArena Text: Spanish14211364Gemini 3.1 Flash Lite Preview
LMArena Text: Russian14201359Gemini 3.1 Flash Lite Preview
LMArena Text: Polish14431371Gemini 3.1 Flash Lite Preview
LMArena Text: multi-turn14171384Gemini 3.1 Flash Lite Preview
LMArena Text: longer queries13941360Gemini 3.1 Flash Lite Preview
LMArena Text: writing and language14081352Gemini 3.1 Flash Lite Preview
LMArena Text: entertainment and media13861335Gemini 3.1 Flash Lite Preview
LMArena Vision: English12321172Gemini 3.1 Flash Lite Preview
LMArena Vision: Chinese12781161Gemini 3.1 Flash Lite Preview
LMArena Vision: reading text12461154Gemini 3.1 Flash Lite Preview
LMArena Vision: humor12661145Gemini 3.1 Flash Lite Preview
LMArena Vision: captioning12591094Gemini 3.1 Flash Lite Preview
LMArena Vision: recognizing things13081141Gemini 3.1 Flash Lite Preview
LMArena Vision: creative writing12481146Gemini 3.1 Flash Lite Preview
Neither model has a result on the other 15 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 3.1 Flash Lite Preview and Mistral Medium 3
BenchmarkGemini 3.1 Flash Lite PreviewMistral Medium 3Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Gemini 3.1 Flash Lite Preview$0.0010Fits in one request
Mistral Medium 3$0.0014Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite Preview$0.017Fits in one request
Mistral Medium 3$0.026Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite Preview$0.065Fits in one request
Mistral Medium 3$0.100Exceeds the context window

Gemini 3.1 Flash Lite Preview costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Gemini 3.1 Flash Lite Preview and Mistral Medium 3
SpecificationGoogle Gemini 3.1 Flash Lite PreviewMistral Medium 3
MakerGoogleMistral AI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 3, 2026May 7, 2025
Context window1.05M131K
Input $/Mtok$0.25$0.40
Output $/Mtok$1.50$2.00
Coding index22.7Not benchmarked
Independent measurements behind it30
Cost per solved task$0.18Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.1 Flash Lite Preview better than Mistral Medium 3 for coding?

Only Gemini 3.1 Flash Lite Preview has a coding score, 22.7 on the Vibe Coding Index; Mistral Medium 3 has none, so the two cannot be ranked on coding. Pick Mistral Medium 3 for work measured by Design Arena: 3D, where it leads.

Which is cheaper, Gemini 3.1 Flash Lite Preview or Mistral Medium 3?

Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; Mistral Medium 3 costs $0.40 and $2.00. Cost per solved task is known for Gemini 3.1 Flash Lite Preview only.

Which has the bigger context window, Gemini 3.1 Flash Lite Preview or Mistral Medium 3?

Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 131K.

How many benchmarks is the Gemini 3.1 Flash Lite Preview vs Mistral Medium 3 comparison based on?

45 benchmarks have a result for both models as of October 21, 2026. Gemini 3.1 Flash Lite Preview's coding index rests on 3 independent benchmarks and Mistral Medium 3's on 0. Where only one model has a result, the page says so instead of naming a winner.

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