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Mistral Medium 3 vs Mistral Medium 3.1

Updated October 21, 2026. 56 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Mistral Medium 3 Replace Mistral Medium 3.1
Mistral Medium 3Mistral AI
Coding
No data
Overall
9.0
Output $/M
$2.00
2
Mistral Medium 3.1Mistral AI
Coding
No data
Overall
9.2
Output $/M
$2.00
54
vs boards won of 56 shared

Decision reading

Neither model has a coding score yet, so the two cannot be ranked on coding.

Mistral Medium 3 has the edge where what matters is LiveCodeBench (Artificial Analysis run) or Terminal-Bench Hard (Artificial Analysis run), where it leads.

Model AMistral Medium 3Mistral AINot benchmarkedNo coding benchmarkNo cost per solved taskModel BMistral Medium 3.1Mistral AINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
56
Mistral Medium 3 only
1
Mistral Medium 3.1 only
18
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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
Mistral Medium 3 not benchmarked, Mistral Medium 3.1 not benchmarked.
Widest category
Agentic work, 16.4 points apart on average over 1 shared benchmark.
Widest single gap
τ²-Bench Telecom: Mistral Medium 3 24.3% against Mistral Medium 3.1 40.6%, 16.4 points apart on a 0 to 100 scale.
Output price
Both cost $2.00 per million output tokens.
Context window
Both take 131K tokens.

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
CategoryMistral Medium 3BarsMistral Medium 3.1Ties
Coding04
Intelligence01
Agentic work01
Reasoning07
Math04
Knowledge14
Web design15
General028
All shared boards254
CodingLike-for-likeSix of these boards feed the Vibe Coding Index04
Coding benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
AA Coding IndexNot measured20.5Only Mistral Medium 3.1 measured
LiveCodeBench (Vals AI)Not measured44.8%Only Mistral Medium 3.1 measured
LiveCodeBench (Artificial Analysis run)40.0%40.6%Mistral Medium 3.1
SciCodeNot measured32.4%Only Mistral Medium 3.1 measured
Terminal-Bench Hard (Artificial Analysis run)3.8%10.6%Mistral Medium 3.1
ALE-BenchNot measured210.2Only Mistral Medium 3.1 measured
LMArena Text: coding13851433Mistral Medium 3.1
LMArena Text: software and IT13851436Mistral Medium 3.1
Neither model has a result on the other 30 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
AA Intelligence Index9.09.2Mistral Medium 3.1
Epoch Capabilities Index134.0Not measuredOnly Mistral Medium 3 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
AA Agentic IndexNot measured1.9Only Mistral Medium 3.1 measured
τ²-Bench Telecom24.3%40.6%Mistral Medium 3.1
Neither model has a result on the other 37 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index07
Reasoning benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
MMMU Pro (Vals AI)Not measured63.0%Only Mistral Medium 3.1 measured
GPQA Diamond (Artificial Analysis run)57.8%58.8%Mistral Medium 3.1
Humanity's Last Exam (Artificial Analysis run)4.1%4.7%Mistral Medium 3.1
LMArena Text: hard prompts13641426Mistral Medium 3.1
LMArena Text: expert13421408Mistral Medium 3.1
LMArena Text: hard prompts in English13741435Mistral Medium 3.1
LMArena Vision: diagrams11551175Mistral Medium 3.1
LMArena Vision: homework11651165Mistral Medium 3.1
Neither model has a result on the other 13 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index04
Math benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
AIMENot measured42.3%Only Mistral Medium 3.1 measured
MATH 500 (Vals AI)Not measured87.0%Only Mistral Medium 3.1 measured
MGSM (Vals AI)Not measured90.9%Only Mistral Medium 3.1 measured
AA Math Index30.338.3Mistral Medium 3.1
AIME 2025 (Artificial Analysis run)30.3%38.3%Mistral Medium 3.1
LMArena Text: math13531408Mistral Medium 3.1
LMArena Text: mathematical work13541412Mistral Medium 3.1
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index14
Knowledge benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
MMLU ProNot measured75.3%Only Mistral Medium 3.1 measured
LegalBench (Vals AI)Not measured62.0%Only Mistral Medium 3.1 measured
CorpFin (Vals AI)Not measured50.7%Only Mistral Medium 3.1 measured
TaxEval (Vals AI)Not measured70.3%Only Mistral Medium 3.1 measured
MortgageTax (Vals AI)Not measured36.5%Only Mistral Medium 3.1 measured
MedQA (Vals AI)Not measured78.2%Only Mistral Medium 3.1 measured
MMLU Pro (Artificial Analysis run)76.0%68.3%Mistral Medium 3
LMArena Text: science13811444Mistral Medium 3.1
LMArena Text: medicine and healthcare13811449Mistral Medium 3.1
LMArena Text: legal and government13841439Mistral Medium 3.1
LMArena Text: business and finance13521418Mistral Medium 3.1
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index15
Web design benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
Design Arena: websites10791133Mistral Medium 3.1
Design Arena: UI components10241099Mistral Medium 3.1
Design Arena: game dev10181074Mistral Medium 3.1
Design Arena: data viz10341144Mistral Medium 3.1
Design Arena: 3D10831081Mistral Medium 3
Design Arena: all code categories10691120Mistral Medium 3.1
Design Arena: SVGNot measured993Only Mistral Medium 3.1 measured
Design Arena: ASCII artNot measured997Only Mistral Medium 3.1 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index028
General benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
IFBench39.3%39.8%Mistral Medium 3.1
Long context reasoning (AA-LCR)31.3%42.7%Mistral Medium 3.1
DTBench62.3%67.5%Mistral Medium 3.1
LMCANot measured19.1%Only Mistral Medium 3.1 measured
LMArena Text13701424Mistral Medium 3.1
LMArena Text: instruction following13381398Mistral Medium 3.1
LMArena Text: creative writing13431391Mistral Medium 3.1
LMArena Vision11571172Mistral Medium 3.1
LMArena Text: English13851438Mistral Medium 3.1
LMArena Text: non-English13531408Mistral Medium 3.1
LMArena Text: Chinese13741447Mistral Medium 3.1
LMArena Text: German13771432Mistral Medium 3.1
LMArena Text: Japanese13161379Mistral Medium 3.1
LMArena Text: Korean13041380Mistral Medium 3.1
LMArena Text: French13681460Mistral Medium 3.1
LMArena Text: Spanish13641433Mistral Medium 3.1
LMArena Text: Russian13591411Mistral Medium 3.1
LMArena Text: Polish13711430Mistral Medium 3.1
LMArena Text: multi-turn13841418Mistral Medium 3.1
LMArena Text: longer queries13601406Mistral Medium 3.1
LMArena Text: writing and language13521395Mistral Medium 3.1
LMArena Text: entertainment and media13351390Mistral Medium 3.1
LMArena Vision: English11721179Mistral Medium 3.1
LMArena Vision: Chinese11611190Mistral Medium 3.1
LMArena Vision: reading text11541175Mistral Medium 3.1
LMArena Vision: humor11451168Mistral Medium 3.1
LMArena Vision: captioning10941145Mistral Medium 3.1
LMArena Vision: recognizing things11411147Mistral Medium 3.1
LMArena Vision: creative writing11461200Mistral Medium 3.1
Neither model has a result on the other 17 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Mistral Medium 3 and Mistral Medium 3.1
BenchmarkMistral Medium 3Mistral Medium 3.1Leader
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

Mistral Medium 3$0.0014Fits in one request
Mistral Medium 3.1$0.0014Fits in one request

Same cost

Repository review

50K input + 3K output tokens

Mistral Medium 3$0.026Fits in one request
Mistral Medium 3.1$0.026Fits in one request

Same cost

Agent loop

200K input + 10K output tokens

Mistral Medium 3$0.100Exceeds the context window
Mistral Medium 3.1$0.100Exceeds the context window

Same cost

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 Mistral Medium 3 and Mistral Medium 3.1
SpecificationMistral Medium 3Mistral Medium 3.1
MakerMistral AIMistral AI
WeightsNo public weights listedNo public weights listed
ReleasedMay 7, 2025August 13, 2025
Context window131K131K
Input $/Mtok$0.40$0.40
Output $/Mtok$2.00$2.00
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Mistral Medium 3 better than Mistral Medium 3.1 for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Mistral Medium 3 has the edge where what matters is LiveCodeBench (Artificial Analysis run) or Terminal-Bench Hard (Artificial Analysis run), where it leads.

Which is cheaper, Mistral Medium 3 or Mistral Medium 3.1?

Mistral Medium 3 costs $0.40 per million input tokens and $2.00 per million output tokens; Mistral Medium 3.1 costs $0.40 and $2.00. Cost per solved task is known for neither of them.

Which has the bigger context window, Mistral Medium 3 or Mistral Medium 3.1?

Neither: both take 131K tokens.

How many benchmarks is the Mistral Medium 3 vs Mistral Medium 3.1 comparison based on?

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

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