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Kimi K3 vs Mistral Large 3 2512

Kimi K3 leads Mistral Large 3 2512 on the Artificial Analysis Intelligence Index, 43.6 to 9.3, and Mistral Large 3 2512 costs 10.0x less per output token ($1.50 vs $15.00 per million). Updated October 21, 2026; 23 benchmarks have a result for both.

Replace Kimi K3 Replace Mistral Large 3 2512
Kimi K3Moonshot AI
Coding
62.3
Overall
66.5
Output $/M
$15.00
23
Mistral Large 3 2512Mistral AI
Coding
No data
Overall
No data
Output $/M
$1.50
0
vs boards won of 23 shared

Kimi K3 or Mistral Large 3 2512: which to pick

Only Kimi K3 has a coding score, 62.3 on the Vibe Coding Index; Mistral Large 3 2512 has none, so the two cannot be ranked on coding.

Pick Mistral Large 3 2512 for output tokens 10.0x cheaper ($1.50 vs $15.00 per million) and a lower cost per solved task ($0.77 against $0.81).

Model AKimi K3Moonshot AI62.3/1006 independent benchmarks$0.81 per solved taskModel BMistral Large 3 2512Mistral AINot benchmarked1 independent benchmark$0.77 per solved task
Shared results
23
Kimi K3 only
94
Mistral Large 3 2512 only
5
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
Kimi K3 62.3 from 6 benchmarks, Mistral Large 3 2512 not benchmarked.
Widest category
Agentic work, 49.0 points apart on average over 1 shared benchmark.
Widest single gap
AA Coding Index: Kimi K3 76.2 against Mistral Large 3 2512 20.1, 56.1 points apart on a 0 to 100 scale.
Output price
Kimi K3 $15.00 against Mistral Large 3 2512 $1.50 per million output tokens, 10.0x apart.
Context window
Kimi K3 takes 1.05M tokens, Mistral Large 3 2512 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
CategoryKimi K3BarsMistral Large 3 2512Ties
Coding40
Intelligence10
Agentic work10
Reasoning20
Knowledge50
Web design70
General30
All shared boards230
CodingLike-for-likeSix of these boards feed the Vibe Coding Index40
Coding benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
LiveBench coding59.3%Not measuredOnly Kimi K3 measured
LMArena WebDev1655Not measuredOnly Kimi K3 measured
AA Coding Index76.220.1Kimi K3
LiveCodeBench (Vals AI)87.2%55.3%Kimi K3
SWE-bench Verified (Vals AI)93.4%41.4%Kimi K3
Terminal-Bench 4 (Vals AI)17.2%Not measuredOnly Kimi K3 measured
Vibe Code Bench (Vals AI)85.0%Not measuredOnly Kimi K3 measured
Code migration (Vals AI)16.1%Not measuredOnly Kimi K3 measured
ProgramBench (Vals AI)2.0%Not measuredOnly Kimi K3 measured
IOI (Vals AI)48.9%Not measuredOnly Kimi K3 measured
Terminal-Bench 2.1 (Vals AI)80.9%Not measuredOnly Kimi K3 measured
SWE-bench Multimodal (Vals AI)44.2%Not measuredOnly Kimi K3 measured
Vibe Code Bench 1-100 (Vals AI)18.2%Not measuredOnly Kimi K3 measured
CyberBench (Vals AI)75.2%Not measuredOnly Kimi K3 measured
SciCode59.5%Not measuredOnly Kimi K3 measured
FrontierCode44.2%Not measuredOnly Kimi K3 measured
FrontierSWE25.9%Not measuredOnly Kimi K3 measured
WeirdML82.6%Not measuredOnly Kimi K3 measured
ALE-Bench1524.5264.7Kimi K3
LMArena Text: coding1508Not measuredOnly Kimi K3 measured
LMArena Text: software and IT1499Not measuredOnly Kimi K3 measured
LMArena WebDev: React1670Not measuredOnly Kimi K3 measured
LMArena WebDev: HTML1644Not measuredOnly Kimi K3 measured
LMArena WebDev: from an image1579Not measuredOnly Kimi K3 measured
Neither model has a result on the other 15 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
AA Intelligence Index43.69.3Kimi K3
Epoch Capabilities Index157.9Not measuredOnly Kimi K3 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
AA Agentic Index50.01.0Kimi K3
Design Arena: agents building web apps1295Not measuredOnly Kimi K3 measured
Design Arena: agents building full-stack apps1315Not measuredOnly Kimi K3 measured
Design Arena: agents building mobile apps1269Not measuredOnly Kimi K3 measured
Design Arena: agents building Android apps1250Not measuredOnly Kimi K3 measured
Design Arena: agents building Godot games1223Not measuredOnly Kimi K3 measured
Design Arena: agents building games1252Not measuredOnly Kimi K3 measured
Design Arena: HTML slides1256Not measuredOnly Kimi K3 measured
Design Arena: PowerPoint slides1273Not measuredOnly Kimi K3 measured
Design Arena: spreadsheets1058Not measuredOnly Kimi K3 measured
LiveBench research79.0%Not measuredOnly Kimi K3 measured
LiveBench browser16.0%Not measuredOnly Kimi K3 measured
LiveBench long agentic42.8%Not measuredOnly Kimi K3 measured
Finance Agent (Vals AI)53.1%Not measuredOnly Kimi K3 measured
Tax Agent Bench (Vals AI)33.4%Not measuredOnly Kimi K3 measured
Legal Research Bench (Vals AI)46.1%Not measuredOnly Kimi K3 measured
Harvey's Legal Agent Benchmark (Vals AI)12.9%Not measuredOnly Kimi K3 measured
Excel Modeling Benchmark (Vals AI)66.7%Not measuredOnly Kimi K3 measured
BioMysteryBench (Vals AI)72.6%Not measuredOnly Kimi K3 measured
Terminal-Bench-Science (Vals AI)1.4%Not measuredOnly Kimi K3 measured
Time Horizon Index (Vals AI)10.5%Not measuredOnly Kimi K3 measured
APEX-Agents47.8%Not measuredOnly Kimi K3 measured
PostTrainBench32.0%Not measuredOnly Kimi K3 measured
Vending-Bench 2$5,165Not measuredOnly Kimi K3 measured
Neither model has a result on the other 17 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index20
Reasoning benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
GPQA Diamond92.9%68.4%Kimi K3
LiveBench reasoning90.7%Not measuredOnly Kimi K3 measured
MMMU Pro (Vals AI)88.2%66.2%Kimi K3
GPQA Diamond (Artificial Analysis run)93.5%Not measuredOnly Kimi K3 measured
Humanity's Last Exam (Artificial Analysis run)46.9%Not measuredOnly Kimi K3 measured
GPQA Diamond (Epoch AI run)93.1%Not measuredOnly Kimi K3 measured
ARC-AGI94.5%Not measuredOnly Kimi K3 measured
ARC-AGI-260.4%Not measuredOnly Kimi K3 measured
SimpleBench60.7%Not measuredOnly Kimi K3 measured
Chess puzzles37.0%Not measuredOnly Kimi K3 measured
Mystery game puzzles26.0%Not measuredOnly Kimi K3 measured
LMArena Text: hard prompts1495Not measuredOnly Kimi K3 measured
LMArena Text: expert1520Not measuredOnly Kimi K3 measured
LMArena Text: hard prompts in English1496Not measuredOnly Kimi K3 measured
Neither model has a result on the other 8 boards here
MathDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Math benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
AIMENot measured42.9%Only Mistral Large 3 2512 measured
MGSM (Vals AI)Not measured85.4%Only Mistral Large 3 2512 measured
OTIS Mock AIME97.2%Not measuredOnly Kimi K3 measured
FrontierMath, tiers 1 to 372.2%Not measuredOnly Kimi K3 measured
FrontierMath, tier 439.0%Not measuredOnly Kimi K3 measured
ProofBench87.0%Not measuredOnly Kimi K3 measured
LMArena Text: math1494Not measuredOnly Kimi K3 measured
LMArena Text: mathematical work1505Not measuredOnly Kimi K3 measured
Neither model has a result on the other 5 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
MMLU Pro88.0%79.8%Kimi K3
LegalBench (Vals AI)86.2%79.1%Kimi K3
CaseLaw (Vals AI)Not measured61.4%Only Mistral Large 3 2512 measured
CorpFin (Vals AI)71.6%61.0%Kimi K3
TaxEval (Vals AI)75.7%73.1%Kimi K3
MortgageTax (Vals AI)66.3%52.1%Kimi K3
MedQA (Vals AI)Not measured82.2%Only Mistral Large 3 2512 measured
MedCode (Vals AI)49.4%Not measuredOnly Kimi K3 measured
SimpleQA Verified50.6%Not measuredOnly Kimi K3 measured
LMArena Text: science1508Not measuredOnly Kimi K3 measured
LMArena Text: medicine and healthcare1489Not measuredOnly Kimi K3 measured
LMArena Text: legal and government1503Not measuredOnly Kimi K3 measured
LMArena Text: business and finance1470Not measuredOnly Kimi K3 measured
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index70
Web design benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
Design Arena: websites13351162Kimi K3
Design Arena: UI components13441102Kimi K3
Design Arena: game dev13591080Kimi K3
Design Arena: data viz13511136Kimi K3
Design Arena: 3D13881100Kimi K3
Design Arena: all code categories13601142Kimi K3
Design Arena: SVG1302993Kimi K3
Design Arena: ASCII artNot measured1069Only Mistral Large 3 2512 measured
LiveBench design77.2%Not measuredOnly Kimi K3 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index30
General benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
Vals Index53.0%Not measuredOnly Kimi K3 measured
LiveBench data analysis78.7%Not measuredOnly Kimi K3 measured
Public Benefits Bench (Vals AI)68.2%Not measuredOnly Kimi K3 measured
SAGE (Vals AI)52.8%24.6%Kimi K3
MedScribe (Vals AI)88.0%Not measuredOnly Kimi K3 measured
Vals Multimodal Index73.4%Not measuredOnly Kimi K3 measured
Long context reasoning (AA-LCR)88.7%Not measuredOnly Kimi K3 measured
DTBench91.2%65.1%Kimi K3
LMCA52.7%16.7%Kimi K3
Surface Evolver Bench95.0%Not measuredOnly Kimi K3 measured
Furniture assembly34.2%Not measuredOnly Kimi K3 measured
LMArena Text1476Not measuredOnly Kimi K3 measured
LMArena Text: instruction following1485Not measuredOnly Kimi K3 measured
LMArena Text: creative writing1457Not measuredOnly Kimi K3 measured
LMArena Text: English1481Not measuredOnly Kimi K3 measured
LMArena Text: non-English1466Not measuredOnly Kimi K3 measured
LMArena Text: Chinese1529Not measuredOnly Kimi K3 measured
LMArena Text: German1490Not measuredOnly Kimi K3 measured
LMArena Text: Japanese1494Not measuredOnly Kimi K3 measured
LMArena Text: Korean1460Not measuredOnly Kimi K3 measured
LMArena Text: French1492Not measuredOnly Kimi K3 measured
LMArena Text: Spanish1472Not measuredOnly Kimi K3 measured
LMArena Text: Russian1485Not measuredOnly Kimi K3 measured
LMArena Text: Polish1458Not measuredOnly Kimi K3 measured
LMArena Text: multi-turn1489Not measuredOnly Kimi K3 measured
LMArena Text: longer queries1494Not measuredOnly Kimi K3 measured
LMArena Text: writing and language1471Not measuredOnly Kimi K3 measured
LMArena Text: entertainment and media1453Not measuredOnly Kimi K3 measured
Neither model has a result on the other 18 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Kimi K3 and Mistral Large 3 2512
BenchmarkKimi K3Mistral Large 3 2512Leader
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

Kimi K3$0.011Fits in one request
Mistral Large 3 2512$0.0013Fits in one request

Mistral Large 3 2512 costs less

Repository review

50K input + 3K output tokens

Kimi K3$0.195Fits in one request
Mistral Large 3 2512$0.029Fits in one request

Mistral Large 3 2512 costs less

Agent loop

200K input + 10K output tokens

Kimi K3$0.750Fits in one request
Mistral Large 3 2512$0.115Fits in one request

Mistral Large 3 2512 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 Kimi K3 and Mistral Large 3 2512
SpecificationMoonshotAI Kimi K3Mistral Large 3 2512
MakerMoonshot AIMistral AI
WeightsOpen weightsNo public weights listed
ReleasedJuly 16, 2026December 1, 2025
Context window1.05M262K
Input $/Mtok$3.00$0.50
Output $/Mtok$15.00$1.50
Coding index62.3Not benchmarked
Independent measurements behind it61
Cost per solved task$0.81$0.77
SourceOpenRouter listingOpenRouter listing

Questions

Is Kimi K3 better than Mistral Large 3 2512 for coding?

Only Kimi K3 has a coding score, 62.3 on the Vibe Coding Index; Mistral Large 3 2512 has none, so the two cannot be ranked on coding. Pick Mistral Large 3 2512 for output tokens 10.0x cheaper ($1.50 vs $15.00 per million) and a lower cost per solved task ($0.77 against $0.81).

Which is cheaper, Kimi K3 or Mistral Large 3 2512?

Kimi K3 costs $3.00 per million input tokens and $15.00 per million output tokens; Mistral Large 3 2512 costs $0.50 and $1.50. Per solved SWE-bench Verified task, Kimi K3 costs $0.81 and Mistral Large 3 2512 $0.77.

Which has the bigger context window, Kimi K3 or Mistral Large 3 2512?

Kimi K3, with 1.05M tokens against 262K.

How many benchmarks is the Kimi K3 vs Mistral Large 3 2512 comparison based on?

23 benchmarks have a result for both models as of October 21, 2026. Kimi K3's coding index rests on 6 independent benchmarks and Mistral Large 3 2512's on 1. Where only one model has a result, the page says so instead of naming a winner.

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