Noometry

Model comparison

Mistral Large 4 vs Step 3.5 Flash

Mistral Large 4 and Step 3.5 Flash score almost the same on the Noometry Index (43.1 vs 42.3), so choose on price, context window or the category you care about most.

Last verified . 13 shared benchmarks.

Mistral Large 4 Mistral AI

43.1

Rank #99 Confirmed

Step 3.5 Flash StepFun

42.3

Rank #116 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Mistral Large 4 scores higher in 6 categories and Step 3.5 Flash in 2 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in coding, where Mistral Large 4 leads 48.6 to 42.4.
  • Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.68 / $2.09 for Mistral Large 4.
  • Mistral Large 4 accepts more context: 1.05M tokens versus 256K.
  • Step 3.5 Flash has downloadable open weights; the other is API-only.

Side by side

Mistral Large 4Step 3.5 Flash
ProviderMistral AIStepFun
Noometry Index43.142.3
Released2026-10-062026-01-29
WeightsProprietaryOpen
Context window1.05M256K
Max output262K256K
Input $ / M tokens$0.68$0.10
Output $ / M tokens$2.09$0.30
Results tracked1519

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Category by category

Coding Mistral Large 4 leads

Mistral Large 4: 48.6 (#57), Step 3.5 Flash: 42.4 (#105)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Coding14751436
LMArena WebDev1541—

Reasoning Too close to call

Mistral Large 4: 22.5 (#192), Step 3.5 Flash: 22.2 (#202)

BenchmarkMistral Large 4Step 3.5 Flash
NYT Connections (extended)27.4%28.4%
LMArena Hard Prompts14441411

Math Step 3.5 Flash leads

Mistral Large 4: 40.4 (#91), Step 3.5 Flash: 42.6 (#84)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Math14881408
MathArena Final-Answer Competitions—66.8%

Knowledge Step 3.5 Flash leads

Mistral Large 4: 36.6 (#166), Step 3.5 Flash: 39.6 (#132)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Expert14471421
SimpleQA Verified20%—

Multilingual Mistral Large 4 leads

Mistral Large 4: 52.6 (#82), Step 3.5 Flash: 50.5 (#119)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Non-English14151385
LMArena Chinese14911447
LMArena Russian14141385
LMArena French—1421
LMArena German—1405
LMArena Japanese—1354
LMArena Korean—1352
LMArena Spanish—1419

Instruction Following Mistral Large 4 leads

Mistral Large 4: 75.0 (#76), Step 3.5 Flash: 73.1 (#124)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Instruction Following14241385

Long Context Too close to call

Mistral Large 4: 43.6 (#89), Step 3.5 Flash: 42.8 (#117)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Longer Query14291402

Writing & Preference Mistral Large 4 leads

Mistral Large 4: 60.4 (#97), Step 3.5 Flash: 58.8 (#113)

BenchmarkMistral Large 4Step 3.5 Flash
LMArena Text14271403
LMArena Creative Writing13611357
LMArena Multi-Turn14241405

Frequently asked questions

Is Mistral Large 4 better than Step 3.5 Flash?

Mistral Large 4 and Step 3.5 Flash score almost the same on the Noometry Index (43.1 vs 42.3), so choose on price, context window or the category you care about most.

Which is cheaper, Mistral Large 4 or Step 3.5 Flash?

Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Mistral Large 4 lists at $0.68 and $2.09.

Is Mistral Large 4 or Step 3.5 Flash better for coding?

Mistral Large 4 scores higher on coding benchmarks: 48.6 versus 42.4 in the Noometry coding category.

Which has the bigger context window?

Mistral Large 4 does, with 1.05M tokens against 256K.

How many benchmarks do Mistral Large 4 and Step 3.5 Flash share?

13 benchmarks have published results for both models. Mistral Large 4 has 15 scored results on Noometry and Step 3.5 Flash has 19.

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