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Grok 4.3 vs Mistral Large 4

Mistral Large 4 leads Grok 4.3 on coding, 56.4 to 37.4 on the Vibe Coding Index, and Grok 4.3 costs 1.7x less per output token ($2.50 vs $4.18 per million). Updated October 22, 2026; 62 benchmarks have a result for both.

Replace Grok 4.3 Replace Mistral Large 4
Grok 4.3xAI
Coding
37.4
Overall
53.1
Output $/M
$2.50
7
Mistral Large 4Mistral AI
Coding
56.4
Overall
54.6
Output $/M
$4.18
55
vs boards won of 62 shared

Grok 4.3 or Mistral Large 4: which to pick

Pick Mistral Large 4 for coding: it scores 56.4 on the Vibe Coding Index against 37.4 for Grok 4.3.

Pick Grok 4.3 for output tokens 1.7x cheaper ($2.50 vs $4.18 per million) and work measured by Humanity's Last Exam (Artificial Analysis run) or GPQA Diamond (Epoch AI run), where it leads.

Model AGrok 4.3xAI37.4/1003 independent benchmarks$0.31 per solved taskModel BMistral Large 4Mistral AI56.4/1005 independent benchmarksNo cost per solved task
Shared results
62
Grok 4.3 only
43
Mistral Large 4 only
19
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
Grok 4.3 37.4 from 3 benchmarks, Mistral Large 4 56.4 from 5 benchmarks.
Widest category
Agentic work, 23.8 points apart on average over 4 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Grok 4.3 19.4% against Mistral Large 4 78.4%, 59.0 points apart on a 0 to 100 scale.
Output price
Grok 4.3 $2.50 against Mistral Large 4 $4.18 per million output tokens, 1.7x apart.
Context window
Grok 4.3 takes 1M tokens, Mistral Large 4 1.05M.

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
CategoryGrok 4.3BarsMistral Large 4Ties
Coding09
Intelligence01
Agentic work04
Reasoning25
Math15
Knowledge15
Web design08
General318
All shared boards755
CodingLike-for-likeSix of these boards feed the Vibe Coding Index09
Coding benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
LiveBench codingNot measured60.0%Only Mistral Large 4 measured
LMArena WebDev13581543Mistral Large 4
AA Coding Index42.2Not measuredOnly Grok 4.3 measured
LiveCodeBench (Vals AI)84.5%Not measuredOnly Grok 4.3 measured
SWE-bench Verified (Vals AI)71.4%Not measuredOnly Grok 4.3 measured
Terminal-Bench 4 (Vals AI)Not measured27.8%Only Mistral Large 4 measured
Vibe Code Bench (Vals AI)19.4%78.4%Mistral Large 4
Code migration (Vals AI)6.8%30.6%Mistral Large 4
ProgramBench (Vals AI)0.0%Not measuredOnly Grok 4.3 measured
IOI (Vals AI)Not measured45.3%Only Mistral Large 4 measured
Terminal-Bench 2.1 (Vals AI)42.0%Not measuredOnly Grok 4.3 measured
SWE-bench Multimodal (Vals AI)Not measured33.1%Only Mistral Large 4 measured
Vibe Code Bench 1-100 (Vals AI)Not measured14.3%Only Mistral Large 4 measured
SkillsBench (Vals AI)40.6%Not measuredOnly Grok 4.3 measured
SciCode48.3%54.2%Mistral Large 4
Terminal-Bench Hard (Artificial Analysis run)37.9%Not measuredOnly Grok 4.3 measured
FrontierCodeNot measured39.4%Only Mistral Large 4 measured
WeirdML49.9%Not measuredOnly Grok 4.3 measured
ALE-Bench944.21213.2Mistral Large 4
LMArena Text: coding14151478Mistral Large 4
LMArena Text: software and IT14161467Mistral Large 4
LMArena WebDev: React13531559Mistral Large 4
LMArena WebDev: HTML13671487Mistral Large 4
LMArena WebDev: from an image1375Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 15 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
AA Intelligence Index24.938.4Mistral Large 4
Epoch Capabilities IndexNot measured150.0Only Mistral Large 4 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index04
Agentic work benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
AA Agentic Index15.5Not measuredOnly Grok 4.3 measured
Design Arena: agents building web apps1126Not measuredOnly Grok 4.3 measured
Design Arena: agents building full-stack apps1006Not measuredOnly Grok 4.3 measured
Design Arena: agents building mobile apps1058Not measuredOnly Grok 4.3 measured
Design Arena: agents building Android apps962Not measuredOnly Grok 4.3 measured
Design Arena: agents building Godot games914Not measuredOnly Grok 4.3 measured
Design Arena: agents building games1007Not measuredOnly Grok 4.3 measured
Design Arena: HTML slides959Not measuredOnly Grok 4.3 measured
Design Arena: PowerPoint slides988Not measuredOnly Grok 4.3 measured
Design Arena: spreadsheets879Not measuredOnly Grok 4.3 measured
LiveBench researchNot measured28.1%Only Mistral Large 4 measured
LiveBench browserNot measured8.0%Only Mistral Large 4 measured
LiveBench long agenticNot measured11.8%Only Mistral Large 4 measured
Finance Agent (Vals AI)37.7%54.7%Mistral Large 4
Tax Agent Bench (Vals AI)6.2%30.4%Mistral Large 4
Legal Research Bench (Vals AI)15.4%31.7%Mistral Large 4
Harvey's Legal Agent Benchmark (Vals AI)Not measured17.5%Only Mistral Large 4 measured
Excel Modeling Benchmark (Vals AI)18.4%56.2%Mistral Large 4
BioMysteryBench (Vals AI)Not measured67.0%Only Mistral Large 4 measured
τ²-Bench Telecom97.7%Not measuredOnly Grok 4.3 measured
Vending-Bench 2$35Not measuredOnly Grok 4.3 measured
LMArena Search1166Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 19 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index25
Reasoning benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
GPQA Diamond91.4%Not measuredOnly Grok 4.3 measured
LiveBench reasoningNot measured83.9%Only Mistral Large 4 measured
MysteryMechanism (Vals AI)Not measured12.2%Only Mistral Large 4 measured
MMMU Pro (Vals AI)83.1%Not measuredOnly Grok 4.3 measured
GPQA Diamond (Artificial Analysis run)90.1%Not measuredOnly Grok 4.3 measured
Humanity's Last Exam (Artificial Analysis run)37.2%35.0%Grok 4.3
GPQA Diamond (Epoch AI run)88.8%88.1%Grok 4.3
Chess puzzles18.0%33.0%Mistral Large 4
Mystery game puzzlesNot measured17.0%Only Mistral Large 4 measured
LMArena Text: hard prompts13961444Mistral Large 4
LMArena Text: expert13841444Mistral Large 4
LMArena Text: hard prompts in English14021442Mistral Large 4
LMArena Vision: diagrams12411288Mistral Large 4
LMArena Vision: homework1241Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index15
Math benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
OTIS Mock AIME93.3%98.3%Mistral Large 4
FrontierMath, tiers 1 to 342.8%58.6%Mistral Large 4
FrontierMath, tier 414.6%26.8%Mistral Large 4
ProofBench11.0%10.0%Grok 4.3
LMArena Text: math13871469Mistral Large 4
LMArena Text: mathematical work13961462Mistral Large 4
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index15
Knowledge benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
MMLU Pro85.8%Not measuredOnly Grok 4.3 measured
LegalBench (Vals AI)84.5%Not measuredOnly Grok 4.3 measured
CaseLaw (Vals AI)79.3%Not measuredOnly Grok 4.3 measured
CorpFin (Vals AI)68.5%Not measuredOnly Grok 4.3 measured
TaxEval (Vals AI)70.8%Not measuredOnly Grok 4.3 measured
MortgageTax (Vals AI)48.3%Not measuredOnly Grok 4.3 measured
MedCode (Vals AI)38.1%40.7%Mistral Large 4
SimpleQA Verified33.2%20.0%Grok 4.3
LMArena Text: science13991448Mistral Large 4
LMArena Text: medicine and healthcare13841433Mistral Large 4
LMArena Text: legal and government13861425Mistral Large 4
LMArena Text: business and finance13811439Mistral Large 4
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index08
Web design benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
Design Arena: websites11961257Mistral Large 4
Design Arena: UI components11901272Mistral Large 4
Design Arena: game dev11731225Mistral Large 4
Design Arena: data viz11791275Mistral Large 4
Design Arena: 3D11241252Mistral Large 4
Design Arena: all code categories11861259Mistral Large 4
Design Arena: SVG10801232Mistral Large 4
Design Arena: ASCII art11251202Mistral Large 4
LiveBench designNot measured65.6%Only Mistral Large 4 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index318
General benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
LiveBench data analysisNot measured76.5%Only Mistral Large 4 measured
Public Benefits Bench (Vals AI)51.7%Not measuredOnly Grok 4.3 measured
SAGE (Vals AI)19.7%Not measuredOnly Grok 4.3 measured
MedScribe (Vals AI)74.4%80.4%Mistral Large 4
Vals Multimodal Index43.3%Not measuredOnly Grok 4.3 measured
IFBench83.3%Not measuredOnly Grok 4.3 measured
Long context reasoning (AA-LCR)75.0%81.3%Mistral Large 4
DTBench90.7%88.2%Grok 4.3
LMCA38.3%35.8%Grok 4.3
Surface Evolver BenchNot measured28.1%Only Mistral Large 4 measured
Furniture assemblyNot measured20.8%Only Mistral Large 4 measured
LMArena Text13971431Mistral Large 4
LMArena Text: instruction following13661422Mistral Large 4
LMArena Text: creative writing13801363Grok 4.3
LMArena Vision12291272Mistral Large 4
LMArena Text: English14041433Mistral Large 4
LMArena Text: non-English13851422Mistral Large 4
LMArena Text: Chinese14221492Mistral Large 4
LMArena Text: German1395Not measuredOnly Grok 4.3 measured
LMArena Text: Japanese13791415Mistral Large 4
LMArena Text: Korean1354Not measuredOnly Grok 4.3 measured
LMArena Text: French14111492Mistral Large 4
LMArena Text: Spanish13991455Mistral Large 4
LMArena Text: Russian13991417Mistral Large 4
LMArena Text: Polish1398Not measuredOnly Grok 4.3 measured
LMArena Text: multi-turn14061435Mistral Large 4
LMArena Text: longer queries13931428Mistral Large 4
LMArena Text: writing and language13851386Mistral Large 4
LMArena Text: entertainment and media13701378Mistral Large 4
LMArena Vision: English12351283Mistral Large 4
LMArena Vision: Chinese1257Not measuredOnly Grok 4.3 measured
LMArena Vision: reading text12351284Mistral Large 4
LMArena Vision: humor1222Not measuredOnly Grok 4.3 measured
LMArena Vision: recognizing things1217Not measuredOnly Grok 4.3 measured
LMArena Vision: creative writing1237Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Grok 4.3 and Mistral Large 4
BenchmarkGrok 4.3Mistral Large 4Leader
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

Grok 4.3$0.0025Fits in one request
Mistral Large 4$0.0034Fits in one request

Grok 4.3 costs less

Repository review

50K input + 3K output tokens

Grok 4.3$0.070Fits in one request
Mistral Large 4$0.081Fits in one request

Grok 4.3 costs less

Agent loop

200K input + 10K output tokens

Grok 4.3$0.275Fits in one request
Mistral Large 4$0.314Fits in one request

Grok 4.3 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 Grok 4.3 and Mistral Large 4
SpecificationSpaceXAI Grok 4.3Mistral Large 4
MakerxAIMistral AI
WeightsNo public weights listedNo public weights listed
ReleasedApril 30, 2026October 6, 2026
Context window1M1.05M
Input $/Mtok$1.25$1.36
Output $/Mtok$2.50$4.18
Coding index37.456.4
Independent measurements behind it35
Cost per solved task$0.31Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.3 better than Mistral Large 4 for coding?

Pick Mistral Large 4 for coding: it scores 56.4 on the Vibe Coding Index against 37.4 for Grok 4.3. Pick Grok 4.3 for output tokens 1.7x cheaper ($2.50 vs $4.18 per million) and work measured by Humanity's Last Exam (Artificial Analysis run) or GPQA Diamond (Epoch AI run), where it leads.

Which is cheaper, Grok 4.3 or Mistral Large 4?

Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens; Mistral Large 4 costs $1.36 and $4.18. Cost per solved task is known for Grok 4.3 only.

Which has the bigger context window, Grok 4.3 or Mistral Large 4?

Mistral Large 4, with 1.05M tokens against 1M.

How many benchmarks is the Grok 4.3 vs Mistral Large 4 comparison based on?

62 benchmarks have a result for both models as of October 22, 2026. Grok 4.3's coding index rests on 3 independent benchmarks and Mistral Large 4's on 5. 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/grok-4-3-vs-mistral-large-4-0">LLMBenchmark.ai, Grok 4.3 vs Mistral Large 4</a></p>