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Mistral Large 3 2512 vs o3 Mini

o3 Mini leads Mistral Large 3 2512 on the Artificial Analysis Intelligence Index, 12.5 to 9.3, and Mistral Large 3 2512 costs 2.9x less per output token ($1.50 vs $4.40 per million). Updated October 22, 2026; 12 benchmarks have a result for both.

Replace Mistral Large 3 2512 Replace o3 Mini
Mistral Large 3 2512Mistral AI
Coding
No data
Overall
No data
Output $/M
$1.50
4
o3 MiniOpenAI
Coding
No data
Overall
38.0
Output $/M
$4.40
8
vs boards won of 12 shared

Mistral Large 3 2512 or o3 Mini: which to pick

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

Pick Mistral Large 3 2512 for output tokens 2.9x cheaper ($1.50 vs $4.40 per million) and a larger context window (262K against 200K tokens).

Model AMistral Large 3 2512Mistral AINot benchmarked1 independent benchmark$0.77 per solved taskModel Bo3 MiniOpenAINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
12
Mistral Large 3 2512 only
16
o3 Mini only
59
Like-for-like categories
6 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
Mistral Large 3 2512 not benchmarked, o3 Mini not benchmarked.
Widest category
Math, 24.7 points apart on average over 2 shared benchmarks.
Widest single gap
AIME: Mistral Large 3 2512 42.9% against o3 Mini 86.5%, 43.5 points apart on a 0 to 100 scale.
Output price
Mistral Large 3 2512 $1.50 against o3 Mini $4.40 per million output tokens, 2.9x apart.
Context window
Mistral Large 3 2512 takes 262K tokens, o3 Mini 200K.

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 Large 3 2512Barso3 MiniTies
Coding01
Intelligence01
Reasoning01
Math02
Knowledge41
General02
All shared boards48
CodingLike-for-likeSix of these boards feed the Vibe Coding Index01
Coding benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
Aider polyglotNot measured60.4%Only o3 Mini measured
SWE-bench VerifiedNot measured42.4%Only o3 Mini measured
SWE-bench LiteNot measured32.3%Only o3 Mini measured
AA Coding Index20.1Not measuredOnly Mistral Large 3 2512 measured
LiveCodeBench (Vals AI)55.3%71.5%o3 Mini
SWE-bench Verified (Vals AI)41.4%Not measuredOnly Mistral Large 3 2512 measured
LiveCodeBench (Artificial Analysis run)Not measured73.4%Only o3 Mini measured
SciCodeNot measured42.8%Only o3 Mini measured
Terminal-Bench Hard (Artificial Analysis run)Not measured6.8%Only o3 Mini measured
GSO-BenchNot measured1.3%Only o3 Mini measured
WeirdMLNot measured43.7%Only o3 Mini measured
CybenchNot measured22.5%Only o3 Mini measured
ALE-Bench264.7Not measuredOnly Mistral Large 3 2512 measured
LMArena Text: codingNot measured1378Only o3 Mini measured
LMArena Text: software and ITNot measured1364Only o3 Mini measured
SciCodeNot measured7.7%Only o3 Mini measured
Neither model has a result on the other 23 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
AA Intelligence Index9.312.5o3 Mini
Epoch Capabilities IndexNot measured140.2Only o3 Mini measured
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
Agentic work benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
AA Agentic Index1.0Not measuredOnly Mistral Large 3 2512 measured
τ²-Bench TelecomNot measured31.3%Only o3 Mini measured
Neither model has a result on the other 39 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index01
Reasoning benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
GPQA Diamond68.4%75.5%o3 Mini
MMMU Pro (Vals AI)66.2%Not measuredOnly Mistral Large 3 2512 measured
GPQA Diamond (Artificial Analysis run)Not measured77.3%Only o3 Mini measured
Humanity's Last Exam (Artificial Analysis run)Not measured12.0%Only o3 Mini measured
GPQA Diamond (Epoch AI run)Not measured77.0%Only o3 Mini measured
ARC-AGINot measured34.5%Only o3 Mini measured
ARC-AGI-2Not measured3.0%Only o3 Mini measured
SimpleBenchNot measured22.8%Only o3 Mini measured
Chess puzzlesNot measured15.0%Only o3 Mini measured
Mystery game puzzlesNot measured7.0%Only o3 Mini measured
LMArena Text: hard promptsNot measured1365Only o3 Mini measured
LMArena Text: expertNot measured1364Only o3 Mini measured
LMArena Text: hard prompts in EnglishNot measured1375Only o3 Mini measured
Neither model has a result on the other 9 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index02
Math benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
AIME42.9%86.5%o3 Mini
MATH 500 (Vals AI)Not measured91.8%Only o3 Mini measured
MGSM (Vals AI)85.4%91.3%o3 Mini
OTIS Mock AIMENot measured76.9%Only o3 Mini measured
FrontierMath, tiers 1 to 3Not measured18.6%Only o3 Mini measured
FrontierMath, tier 4Not measured0.0%Only o3 Mini measured
MATH level 5Not measured96.5%Only o3 Mini measured
LMArena Text: mathNot measured1396Only o3 Mini measured
LMArena Text: mathematical workNot measured1399Only o3 Mini measured
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index41
Knowledge benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
MMLU Pro79.8%78.7%Mistral Large 3 2512
LegalBench (Vals AI)79.1%71.5%Mistral Large 3 2512
CaseLaw (Vals AI)61.4%Not measuredOnly Mistral Large 3 2512 measured
CorpFin (Vals AI)61.0%45.3%Mistral Large 3 2512
TaxEval (Vals AI)73.1%69.4%Mistral Large 3 2512
MortgageTax (Vals AI)52.1%Not measuredOnly Mistral Large 3 2512 measured
MedQA (Vals AI)82.2%94.8%o3 Mini
MMLU Pro (Artificial Analysis run)Not measured80.2%Only o3 Mini measured
SimpleQA VerifiedNot measured15.3%Only o3 Mini measured
LMArena Text: scienceNot measured1339Only o3 Mini measured
LMArena Text: medicine and healthcareNot measured1330Only o3 Mini measured
LMArena Text: legal and governmentNot measured1328Only o3 Mini measured
LMArena Text: business and financeNot measured1313Only o3 Mini measured
Neither model has a result on the other 5 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
Design Arena: websites1162Not measuredOnly Mistral Large 3 2512 measured
Design Arena: UI components1099Not measuredOnly Mistral Large 3 2512 measured
Design Arena: game dev1080Not measuredOnly Mistral Large 3 2512 measured
Design Arena: data viz1136Not measuredOnly Mistral Large 3 2512 measured
Design Arena: 3D1099Not measuredOnly Mistral Large 3 2512 measured
Design Arena: all code categories1141Not measuredOnly Mistral Large 3 2512 measured
Design Arena: SVG992Not measuredOnly Mistral Large 3 2512 measured
Design Arena: ASCII art1069Not measuredOnly Mistral Large 3 2512 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index02
General benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
SAGE (Vals AI)24.6%Not measuredOnly Mistral Large 3 2512 measured
IFBenchNot measured67.1%Only o3 Mini measured
Long context reasoning (AA-LCR)Not measured43.0%Only o3 Mini measured
DTBench65.1%68.8%o3 Mini
LMCA16.7%19.0%o3 Mini
Fiction.LiveBenchNot measured50.0%Only o3 Mini measured
Creative writing (Lech Mazur)Not measured61.7%Only o3 Mini measured
LMArena TextNot measured1337Only o3 Mini measured
LMArena Text: instruction followingNot measured1337Only o3 Mini measured
LMArena Text: creative writingNot measured1286Only o3 Mini measured
LMArena Text: EnglishNot measured1351Only o3 Mini measured
LMArena Text: non-EnglishNot measured1319Only o3 Mini measured
LMArena Text: ChineseNot measured1379Only o3 Mini measured
LMArena Text: GermanNot measured1303Only o3 Mini measured
LMArena Text: JapaneseNot measured1286Only o3 Mini measured
LMArena Text: KoreanNot measured1313Only o3 Mini measured
LMArena Text: FrenchNot measured1334Only o3 Mini measured
LMArena Text: SpanishNot measured1321Only o3 Mini measured
LMArena Text: RussianNot measured1304Only o3 Mini measured
LMArena Text: PolishNot measured1294Only o3 Mini measured
LMArena Text: multi-turnNot measured1320Only o3 Mini measured
LMArena Text: longer queriesNot measured1343Only o3 Mini measured
LMArena Text: writing and languageNot measured1313Only o3 Mini measured
LMArena Text: entertainment and mediaNot measured1283Only o3 Mini measured
Neither model has a result on the other 22 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Mistral Large 3 2512 and o3 Mini
BenchmarkMistral Large 3 2512o3 MiniLeader
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 Large 3 2512$0.0013Fits in one request
o3 Mini$0.0033Fits in one request

Mistral Large 3 2512 costs less

Repository review

50K input + 3K output tokens

Mistral Large 3 2512$0.029Fits in one request
o3 Mini$0.068Fits in one request

Mistral Large 3 2512 costs less

Agent loop

200K input + 10K output tokens

Mistral Large 3 2512$0.115Fits in one request
o3 Mini$0.264Exceeds the context window

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 Mistral Large 3 2512 and o3 Mini
SpecificationMistral Large 3 2512OpenAI o3 Mini
MakerMistral AIOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedDecember 1, 2025January 31, 2025
Context window262K200K
Input $/Mtok$0.50$1.10
Output $/Mtok$1.50$4.40
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it10
Cost per solved task$0.77Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Mistral Large 3 2512 better than o3 Mini for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Mistral Large 3 2512 for output tokens 2.9x cheaper ($1.50 vs $4.40 per million) and a larger context window (262K against 200K tokens).

Which is cheaper, Mistral Large 3 2512 or o3 Mini?

Mistral Large 3 2512 costs $0.50 per million input tokens and $1.50 per million output tokens; o3 Mini costs $1.10 and $4.40. Cost per solved task is known for Mistral Large 3 2512 only.

Which has the bigger context window, Mistral Large 3 2512 or o3 Mini?

Mistral Large 3 2512, with 262K tokens against 200K.

How many benchmarks is the Mistral Large 3 2512 vs o3 Mini comparison based on?

12 benchmarks have a result for both models as of October 22, 2026. Mistral Large 3 2512's coding index rests on 1 independent benchmark and o3 Mini's on 0. Where only one model has a result, the page says so instead of naming a winner.

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