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Gemini 4 Carbon vs Mistral Medium 3.5

Gemini 4 Carbon leads Mistral Medium 3.5 on coding, 86.6 to 25.4 on the Vibe Coding Index, and Mistral Medium 3.5 costs 1.3x less per output token ($7.50 vs $10.00 per million). Updated November 14, 2026; 42 benchmarks have a result for both.

Replace Gemini 4 Carbon Replace Mistral Medium 3.5
Gemini 4 CarbonGoogle
Coding
86.6
Overall
88.3
Output $/M
$10.00
42
Mistral Medium 3.5Mistral AI
Coding
25.4
Overall
33.2
Output $/M
$7.50
0
vs boards won of 42 shared

Gemini 4 Carbon or Mistral Medium 3.5: which to pick

Pick Gemini 4 Carbon for coding: it scores 86.6 on the Vibe Coding Index against 25.4 for Mistral Medium 3.5.

Pick Mistral Medium 3.5 for output tokens 1.3x cheaper ($7.50 vs $10.00 per million).

Model AGemini 4 CarbonGoogle86.6/1004 independent benchmarksNo cost per solved taskModel BMistral Medium 3.5Mistral AI25.4/1003 independent benchmarks$6.02 per solved task
Shared results
42
Gemini 4 Carbon only
31
Mistral Medium 3.5 only
47
Like-for-like categories
8 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 4 Carbon 86.6 from 4 benchmarks, Mistral Medium 3.5 25.4 from 3 benchmarks.
Widest category
Coding, 50.6 points apart on average over 9 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Gemini 4 Carbon 89.1% against Mistral Medium 3.5 2.9%, 86.2 points apart on a 0 to 100 scale.
Output price
Gemini 4 Carbon $10.00 against Mistral Medium 3.5 $7.50 per million output tokens, 1.3x apart.
Context window
Gemini 4 Carbon takes 1.05M tokens, Mistral Medium 3.5 262K.

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 4 CarbonBarsMistral Medium 3.5Ties
Coding90
Intelligence20
Agentic work20
Reasoning50
Math10
Knowledge50
Web design50
General130
All shared boards420
CodingLike-for-likeSix of these boards feed the Vibe Coding Index90
Coding benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
LiveBench coding91.0%Not measuredOnly Gemini 4 Carbon measured
LMArena WebDev17681263Gemini 4 Carbon
AA Coding IndexNot measured46.9Only Mistral Medium 3.5 measured
SWE-bench Verified (Vals AI)Not measured66.4%Only Mistral Medium 3.5 measured
Terminal-Bench 4 (Vals AI)63.1%Not measuredOnly Gemini 4 Carbon measured
Vibe Code Bench (Vals AI)89.1%2.9%Gemini 4 Carbon
Code migration (Vals AI)Not measured5.1%Only Mistral Medium 3.5 measured
Terminal-Bench 2.1 (Vals AI)Not measured39.0%Only Mistral Medium 3.5 measured
SciCodeNot measured40.2%Only Mistral Medium 3.5 measured
Terminal-Bench Hard (Artificial Analysis run)Not measured33.3%Only Mistral Medium 3.5 measured
Terminal-Bench 4.0 (Artificial Analysis run)65.2%0.0%Gemini 4 Carbon
FrontierCode 2.040.6%1.8%Gemini 4 Carbon
FrontierSWE61.2%Not measuredOnly Gemini 4 Carbon measured
ALE-Bench2374.7764.0Gemini 4 Carbon
LMArena Text: coding15641461Gemini 4 Carbon
LMArena Text: software and IT15521458Gemini 4 Carbon
LMArena WebDev: React17921252Gemini 4 Carbon
LMArena WebDev: HTML17701309Gemini 4 Carbon
GameBench 2Not measured26.8Only Mistral Medium 3.5 measured
CursorBench 4.060.4%Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 32 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
AA Intelligence Index60.04.6Gemini 4 Carbon
Epoch Capabilities Index169.8141.6Gemini 4 Carbon
Agentic workLike-for-likePublic boards, shown as published, kept out of the index20
Agentic work benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
AA Agentic IndexNot measured7.0Only Mistral Medium 3.5 measured
Design Arena: agents building mobile apps1284Not measuredOnly Gemini 4 Carbon measured
Design Arena: spreadsheets1224Not measuredOnly Gemini 4 Carbon measured
LiveBench research92.5%Not measuredOnly Gemini 4 Carbon measured
LiveBench browser80.0%Not measuredOnly Gemini 4 Carbon measured
LiveBench long agentic72.7%Not measuredOnly Gemini 4 Carbon measured
Finance Agent (Vals AI)Not measured32.1%Only Mistral Medium 3.5 measured
Tax Agent Bench (Vals AI)51.8%4.5%Gemini 4 Carbon
Legal Research Bench (Vals AI)55.8%9.1%Gemini 4 Carbon
Harvey's Legal Agent Benchmark (Vals AI)17.5%Not measuredOnly Gemini 4 Carbon measured
Excel Modeling Benchmark (Vals AI)Not measured11.2%Only Mistral Medium 3.5 measured
τ²-Bench TelecomNot measured94.2%Only Mistral Medium 3.5 measured
APEX-Agents84.2%Not measuredOnly Gemini 4 Carbon measured
Vending-Bench 2$16,484Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 30 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index50
Reasoning benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
GPQA DiamondNot measured34.9%Only Mistral Medium 3.5 measured
LiveBench reasoning90.6%Not measuredOnly Gemini 4 Carbon measured
GPQA Diamond (Artificial Analysis run)Not measured74.8%Only Mistral Medium 3.5 measured
Humanity's Last Exam (Artificial Analysis run)Not measured13.8%Only Mistral Medium 3.5 measured
HLE-Diamond (Artificial Analysis run)69.1%4.7%Gemini 4 Carbon
CritPt v2, hard subset (Artificial Analysis run)69.0%0.5%Gemini 4 Carbon
GPQA Diamond (Epoch AI run)96.5%Not measuredOnly Gemini 4 Carbon measured
ARC-AGI98.5%Not measuredOnly Gemini 4 Carbon measured
ARC-AGI-294.2%Not measuredOnly Gemini 4 Carbon measured
SimpleBench92.6%Not measuredOnly Gemini 4 Carbon measured
Chess puzzles78.0%Not measuredOnly Gemini 4 Carbon measured
Mystery game puzzles73.0%Not measuredOnly Gemini 4 Carbon measured
EBR-bench87.6%Not measuredOnly Gemini 4 Carbon measured
LMArena Text: hard prompts15511436Gemini 4 Carbon
LMArena Text: expert15821431Gemini 4 Carbon
LMArena Text: hard prompts in English15451444Gemini 4 Carbon
LMArena Vision: diagramsNot measured1255Only Mistral Medium 3.5 measured
LMArena Vision: homeworkNot measured1229Only Mistral Medium 3.5 measured
Kagi LLM BenchmarkNot measured41.4%Only Mistral Medium 3.5 measured
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index10
Math benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
OTIS Mock AIME100.0%Not measuredOnly Gemini 4 Carbon measured
FrontierMath, tiers 1 to 390.5%Not measuredOnly Gemini 4 Carbon measured
FrontierMath, tier 495.1%Not measuredOnly Gemini 4 Carbon measured
ProofBenchNot measured9.0%Only Mistral Medium 3.5 measured
LMArena Text: mathNot measured1430Only Mistral Medium 3.5 measured
LMArena Text: mathematical work15381440Gemini 4 Carbon
MathArena85.4%Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
MMLU ProNot measured75.3%Only Mistral Medium 3.5 measured
CaseLaw (Vals AI)Not measured44.2%Only Mistral Medium 3.5 measured
CorpFin (Vals AI)Not measured58.8%Only Mistral Medium 3.5 measured
TaxEval (Vals AI)Not measured68.0%Only Mistral Medium 3.5 measured
MortgageTax (Vals AI)Not measured28.9%Only Mistral Medium 3.5 measured
MedCode (Vals AI)Not measured33.8%Only Mistral Medium 3.5 measured
AA-Omniscience53.5-38.7Gemini 4 Carbon
SimpleQA Verified77.7%Not measuredOnly Gemini 4 Carbon measured
LMArena Text: science15351428Gemini 4 Carbon
LMArena Text: medicine and healthcare15251407Gemini 4 Carbon
LMArena Text: legal and government15421437Gemini 4 Carbon
LMArena Text: business and finance15201426Gemini 4 Carbon
FACTS Benchmark Suite78.4%Not measuredOnly Gemini 4 Carbon measured
PRBench Legal53.3%Not measuredOnly Gemini 4 Carbon measured
Neither model has a result on the other 7 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index50
Web design benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
Design Arena: websites13191134Gemini 4 Carbon
Design Arena: UI components13571069Gemini 4 Carbon
Design Arena: game dev13261069Gemini 4 Carbon
Design Arena: data vizNot measured1117Only Mistral Medium 3.5 measured
Design Arena: 3D14341040Gemini 4 Carbon
Design Arena: all code categories13481111Gemini 4 Carbon
Design Arena: SVGNot measured939Only Mistral Medium 3.5 measured
Design Arena: ASCII artNot measured1057Only Mistral Medium 3.5 measured
LiveBench design80.2%Not measuredOnly Gemini 4 Carbon measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index130
General benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
Vals Index70.5%Not measuredOnly Gemini 4 Carbon measured
LiveBench data analysis86.5%Not measuredOnly Gemini 4 Carbon measured
SAGE (Vals AI)Not measured72.0%Only Mistral Medium 3.5 measured
MedScribe (Vals AI)Not measured67.7%Only Mistral Medium 3.5 measured
Vals Multimodal IndexNot measured34.8%Only Mistral Medium 3.5 measured
IFBenchNot measured68.8%Only Mistral Medium 3.5 measured
Long context reasoning (AA-LCR)79.3%69.3%Gemini 4 Carbon
GDPval-AA1733769Gemini 4 Carbon
DTBenchNot measured75.5%Only Mistral Medium 3.5 measured
LMCANot measured26.1%Only Mistral Medium 3.5 measured
Surface Evolver BenchNot measured26.9%Only Mistral Medium 3.5 measured
Furniture assembly77.5%Not measuredOnly Gemini 4 Carbon measured
LMArena Text15381421Gemini 4 Carbon
LMArena Text: instruction following15391416Gemini 4 Carbon
LMArena Text: creative writing15331374Gemini 4 Carbon
LMArena VisionNot measured1222Only Mistral Medium 3.5 measured
LMArena Text: English15301433Gemini 4 Carbon
LMArena Text: non-English15341405Gemini 4 Carbon
LMArena Text: Chinese16131444Gemini 4 Carbon
LMArena Text: GermanNot measured1460Only Mistral Medium 3.5 measured
LMArena Text: KoreanNot measured1383Only Mistral Medium 3.5 measured
LMArena Text: FrenchNot measured1448Only Mistral Medium 3.5 measured
LMArena Text: SpanishNot measured1412Only Mistral Medium 3.5 measured
LMArena Text: Russian15601397Gemini 4 Carbon
LMArena Text: PolishNot measured1429Only Mistral Medium 3.5 measured
LMArena Text: multi-turn15691424Gemini 4 Carbon
LMArena Text: longer queries15491415Gemini 4 Carbon
LMArena Text: writing and language15421383Gemini 4 Carbon
LMArena Text: entertainment and media15271383Gemini 4 Carbon
LMArena Vision: EnglishNot measured1242Only Mistral Medium 3.5 measured
LMArena Vision: ChineseNot measured1245Only Mistral Medium 3.5 measured
LMArena Vision: reading textNot measured1233Only Mistral Medium 3.5 measured
LMArena Vision: humorNot measured1218Only Mistral Medium 3.5 measured
LMArena Vision: creative writingNot measured1199Only Mistral Medium 3.5 measured
EQ-Bench 4Not measured983Only Mistral Medium 3.5 measured
Neither model has a result on the other 14 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 4 Carbon and Mistral Medium 3.5
BenchmarkGemini 4 CarbonMistral Medium 3.5Leader
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 4 Carbon$0.0070Fits in one request
Mistral Medium 3.5$0.0053Fits in one request

Mistral Medium 3.5 costs less

Repository review

50K input + 3K output tokens

Gemini 4 Carbon$0.130Fits in one request
Mistral Medium 3.5$0.098Fits in one request

Mistral Medium 3.5 costs less

Agent loop

200K input + 10K output tokens

Gemini 4 Carbon$0.500Fits in one request
Mistral Medium 3.5$0.375Fits in one request

Mistral Medium 3.5 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 4 Carbon and Mistral Medium 3.5
SpecificationGoogle Gemini 4 CarbonMistral Medium 3.5
MakerGoogleMistral AI
WeightsNo public weights listedOpen weights
ReleasedNovember 10, 2026April 30, 2026
Context window1.05M262K
Input $/Mtok$2.00$1.50
Output $/Mtok$10.00$7.50
Coding index86.625.4
Independent measurements behind it43
Cost per solved taskNot computable$6.02
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 4 Carbon better than Mistral Medium 3.5 for coding?

Pick Gemini 4 Carbon for coding: it scores 86.6 on the Vibe Coding Index against 25.4 for Mistral Medium 3.5. Pick Mistral Medium 3.5 for output tokens 1.3x cheaper ($7.50 vs $10.00 per million).

Which is cheaper, Gemini 4 Carbon or Mistral Medium 3.5?

Gemini 4 Carbon costs $2.00 per million input tokens and $10.00 per million output tokens; Mistral Medium 3.5 costs $1.50 and $7.50. Cost per solved task is known for Mistral Medium 3.5 only.

Which has the bigger context window, Gemini 4 Carbon or Mistral Medium 3.5?

Gemini 4 Carbon, with 1.05M tokens against 262K.

How many benchmarks is the Gemini 4 Carbon vs Mistral Medium 3.5 comparison based on?

42 benchmarks have a result for both models as of November 14, 2026. Gemini 4 Carbon's coding index rests on 4 independent benchmarks and Mistral Medium 3.5's on 3. Where only one model has a result, the page says so instead of naming a winner.

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemini-4-carbon-vs-mistral-medium-3-5">LLMBenchmark.ai, Gemini 4 Carbon vs Mistral Medium 3.5</a></p>