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GPT-5.4 Mini vs Mistral Large 4

Mistral Large 4 leads GPT-5.4 Mini on coding, 56.4 to 35.8 on the Vibe Coding Index, at about the same output price ($4.18 vs $4.50 per million). Updated October 21, 2026; 56 benchmarks have a result for both.

Replace GPT-5.4 Mini Replace Mistral Large 4
GPT-5.4 MiniOpenAI
Coding
35.8
Overall
44.0
Output $/M
$4.50
6
Mistral Large 4Mistral AI
Coding
56.4
Overall
54.6
Output $/M
$4.18
50
vs boards won of 56 shared

GPT-5.4 Mini or Mistral Large 4: which to pick

Pick Mistral Large 4 for coding: it scores 56.4 on the Vibe Coding Index against 35.8 for GPT-5.4 Mini.

Pick GPT-5.4 Mini for work measured by ProofBench or SimpleQA Verified, where it leads.

Model AGPT-5.4 MiniOpenAI35.8/1005 independent benchmarks$0.70 per solved taskModel BMistral Large 4Mistral AI56.4/1005 independent benchmarksNo cost per solved task
Shared results
56
GPT-5.4 Mini only
33
Mistral Large 4 only
25
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
GPT-5.4 Mini 35.8 from 5 benchmarks, Mistral Large 4 56.4 from 5 benchmarks.
Widest category
Coding, 16.0 points apart on average over 11 shared benchmarks.
Widest single gap
Terminal-Bench 4 (Vals AI): GPT-5.4 Mini 2.5% against Mistral Large 4 27.8%, 33.7 points apart on a 0 to 100 scale.
Output price
GPT-5.4 Mini $4.50 against Mistral Large 4 $4.18 per million output tokens, 1.1x apart.
Context window
GPT-5.4 Mini takes 400K 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
CategoryGPT-5.4 MiniBarsMistral Large 4Ties
Coding011
Intelligence02
Agentic work04
Reasoning08
Math15
Knowledge14
General416
All shared boards650
CodingLike-for-likeSix of these boards feed the Vibe Coding Index011
Coding benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
LiveBench codingNot measured60.0%Only Mistral Large 4 measured
LMArena WebDev13971543Mistral Large 4
AA Coding Index56.1Not measuredOnly GPT-5.4 Mini measured
LiveCodeBench (Vals AI)81.5%Not measuredOnly GPT-5.4 Mini measured
SWE-bench Verified (Vals AI)73.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 4 (Vals AI)2.5%27.8%Mistral Large 4
Vibe Code Bench (Vals AI)48.0%78.4%Mistral Large 4
Code migration (Vals AI)12.9%30.6%Mistral Large 4
ProgramBench (Vals AI)0.0%Not measuredOnly GPT-5.4 Mini measured
IOI (Vals AI)Not measured45.3%Only Mistral Large 4 measured
Terminal-Bench 2.1 (Vals AI)54.7%Not measuredOnly GPT-5.4 Mini 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
SciCode52.1%54.2%Mistral Large 4
Terminal-Bench Hard (Artificial Analysis run)52.3%Not measuredOnly GPT-5.4 Mini measured
FrontierCode27.0%39.4%Mistral Large 4
WeirdML60.3%Not measuredOnly GPT-5.4 Mini measured
ALE-Bench1188.61213.2Mistral Large 4
LMArena Text: coding14381478Mistral Large 4
LMArena Text: software and IT14361467Mistral Large 4
LMArena WebDev: React13861559Mistral Large 4
LMArena WebDev: HTML14191487Mistral Large 4
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
AA Intelligence Index24.138.4Mistral Large 4
Epoch Capabilities Index148.7150.0Mistral Large 4
Agentic workLike-for-likePublic boards, shown as published, kept out of the index04
Agentic work benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
AA Agentic Index17.9Not measuredOnly GPT-5.4 Mini 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)45.4%54.7%Mistral Large 4
Tax Agent Bench (Vals AI)8.8%30.4%Mistral Large 4
Legal Research Bench (Vals AI)12.5%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)45.4%56.2%Mistral Large 4
BioMysteryBench (Vals AI)Not measured67.0%Only Mistral Large 4 measured
τ²-Bench Telecom83.3%Not measuredOnly GPT-5.4 Mini measured
DeepResearch Bench36.3%Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 29 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index08
Reasoning benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
GPQA Diamond83.1%Not measuredOnly GPT-5.4 Mini 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)79.3%Not measuredOnly GPT-5.4 Mini measured
GPQA Diamond (Artificial Analysis run)87.5%Not measuredOnly GPT-5.4 Mini measured
Humanity's Last Exam (Artificial Analysis run)28.1%35.0%Mistral Large 4
GPQA Diamond (Epoch AI run)86.9%88.1%Mistral Large 4
ARC-AGI63.7%Not measuredOnly GPT-5.4 Mini measured
ARC-AGI-218.9%Not measuredOnly GPT-5.4 Mini measured
Chess puzzles23.0%33.0%Mistral Large 4
Mystery game puzzles11.0%17.0%Mistral Large 4
LMArena Text: hard prompts14241444Mistral Large 4
LMArena Text: expert14351444Mistral Large 4
LMArena Text: hard prompts in English14201442Mistral Large 4
LMArena Vision: diagrams12661288Mistral Large 4
LMArena Vision: homework1285Not measuredOnly GPT-5.4 Mini measured
Kagi LLM Benchmark37.9%Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index15
Math benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
AIME95.6%Not measuredOnly GPT-5.4 Mini measured
OTIS Mock AIME88.9%98.3%Mistral Large 4
FrontierMath, tiers 1 to 351.2%58.6%Mistral Large 4
FrontierMath, tier 49.8%26.8%Mistral Large 4
ProofBench21.0%10.0%GPT-5.4 Mini
LMArena Text: math14181469Mistral Large 4
LMArena Text: mathematical work14291462Mistral Large 4
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 GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
MMLU Pro84.5%Not measuredOnly GPT-5.4 Mini measured
CaseLaw (Vals AI)51.7%Not measuredOnly GPT-5.4 Mini measured
CorpFin (Vals AI)60.9%Not measuredOnly GPT-5.4 Mini measured
TaxEval (Vals AI)71.2%Not measuredOnly GPT-5.4 Mini measured
MortgageTax (Vals AI)63.5%Not measuredOnly GPT-5.4 Mini measured
MedCode (Vals AI)Not measured40.7%Only Mistral Large 4 measured
SimpleQA Verified29.4%20.0%GPT-5.4 Mini
LMArena Text: science14171448Mistral Large 4
LMArena Text: medicine and healthcare13951433Mistral Large 4
LMArena Text: legal and government14141425Mistral Large 4
LMArena Text: business and finance14181439Mistral Large 4
Neither model has a result on the other 7 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
Design Arena: websitesNot measured1258Only Mistral Large 4 measured
Design Arena: UI componentsNot measured1275Only Mistral Large 4 measured
Design Arena: game devNot measured1226Only Mistral Large 4 measured
Design Arena: data vizNot measured1274Only Mistral Large 4 measured
Design Arena: 3DNot measured1253Only Mistral Large 4 measured
Design Arena: all code categoriesNot measured1259Only Mistral Large 4 measured
Design Arena: SVGNot measured1233Only Mistral Large 4 measured
Design Arena: ASCII artNot measured1202Only Mistral Large 4 measured
LiveBench designNot measured65.6%Only Mistral Large 4 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index416
General benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral Large 4Leader
LiveBench data analysisNot measured76.5%Only Mistral Large 4 measured
SAGE (Vals AI)50.8%Not measuredOnly GPT-5.4 Mini measured
MedScribe (Vals AI)Not measured80.4%Only Mistral Large 4 measured
Vals Multimodal Index54.2%Not measuredOnly GPT-5.4 Mini measured
IFBench73.3%Not measuredOnly GPT-5.4 Mini measured
Long context reasoning (AA-LCR)77.0%81.3%Mistral Large 4
DTBench80.0%88.2%Mistral Large 4
LMCA40.8%35.8%GPT-5.4 Mini
Surface Evolver BenchNot measured28.1%Only Mistral Large 4 measured
Furniture assemblyNot measured20.8%Only Mistral Large 4 measured
LMArena Text14121431Mistral Large 4
LMArena Text: instruction following14051422Mistral Large 4
LMArena Text: creative writing13701363GPT-5.4 Mini
LMArena Vision12451272Mistral Large 4
LMArena Text: English14121433Mistral Large 4
LMArena Text: non-English14051422Mistral Large 4
LMArena Text: Chinese14461492Mistral Large 4
LMArena Text: German1408Not measuredOnly GPT-5.4 Mini measured
LMArena Text: Japanese13751415Mistral Large 4
LMArena Text: Korean1370Not measuredOnly GPT-5.4 Mini measured
LMArena Text: French14411492Mistral Large 4
LMArena Text: Spanish14051455Mistral Large 4
LMArena Text: Russian14171417GPT-5.4 Mini
LMArena Text: Polish1415Not measuredOnly GPT-5.4 Mini measured
LMArena Text: multi-turn14291435Mistral Large 4
LMArena Text: longer queries14081428Mistral Large 4
LMArena Text: writing and language13931386GPT-5.4 Mini
LMArena Text: entertainment and media13731378Mistral Large 4
LMArena Vision: English12441283Mistral Large 4
LMArena Vision: Chinese1286Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: reading text12531284Mistral Large 4
LMArena Vision: humor1235Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: recognizing things1218Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: creative writing1222Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 12 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 Mini and Mistral Large 4
BenchmarkGPT-5.4 MiniMistral 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

GPT-5.4 Mini$0.0030Fits in one request
Mistral Large 4$0.0034Fits in one request

GPT-5.4 Mini costs less

Repository review

50K input + 3K output tokens

GPT-5.4 Mini$0.051Fits in one request
Mistral Large 4$0.081Fits in one request

GPT-5.4 Mini costs less

Agent loop

200K input + 10K output tokens

GPT-5.4 Mini$0.195Fits in one request
Mistral Large 4$0.314Fits in one request

GPT-5.4 Mini 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 GPT-5.4 Mini and Mistral Large 4
SpecificationOpenAI GPT-5.4 MiniMistral Large 4
MakerOpenAIMistral AI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 17, 2026October 6, 2026
Context window400K1.05M
Input $/Mtok$0.75$1.36
Output $/Mtok$4.50$4.18
Coding index35.856.4
Independent measurements behind it55
Cost per solved task$0.70Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 Mini better than Mistral Large 4 for coding?

Pick Mistral Large 4 for coding: it scores 56.4 on the Vibe Coding Index against 35.8 for GPT-5.4 Mini. Pick GPT-5.4 Mini for work measured by ProofBench or SimpleQA Verified, where it leads.

Which is cheaper, GPT-5.4 Mini or Mistral Large 4?

GPT-5.4 Mini costs $0.75 per million input tokens and $4.50 per million output tokens; Mistral Large 4 costs $1.36 and $4.18. Cost per solved task is known for GPT-5.4 Mini only.

Which has the bigger context window, GPT-5.4 Mini or Mistral Large 4?

Mistral Large 4, with 1.05M tokens against 400K.

How many benchmarks is the GPT-5.4 Mini vs Mistral Large 4 comparison based on?

56 benchmarks have a result for both models as of October 21, 2026. GPT-5.4 Mini's coding index rests on 5 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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