Noometry

Model comparison

Grok 4 vs Step 5 Preview

Grok 4 and Step 5 Preview score almost the same on the Noometry Index (48.1 vs 47.9), so choose on price, context window or the category you care about most.

Last verified . 14 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

Step 5 Preview StepFun

47.9

Rank #58 Confirmed

Summary

  • They share 14 benchmarks with published results for both. Grok 4 scores higher in 4 categories and Step 5 Preview in 5 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 44.5.

Side by side

Grok 4Step 5 Preview
ProviderxAIStepFun
Noometry Index48.147.9
Released2025-07-092026-09-16
WeightsProprietaryProprietary
Context window—1.02M
Max output—66K
Input $ / M tokens—$1
Output $ / M tokens—$2.70
Results tracked4818

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Category by category

Coding Step 5 Preview leads

Grok 4: 50.3 (#46), Step 5 Preview: 51.8 (#36)

BenchmarkGrok 4Step 5 Preview
LMArena Coding14081480
Aider Polyglot79.6%—
LMArena WebDev—1564
SciCode—58.9%
WeirdML45.7%—

Agentic & Tool Use Not comparable

Grok 4: 32.3 (#68), Step 5 Preview: —

BenchmarkGrok 4Step 5 Preview
Terminal-Bench27.2%—
Berkeley Function Calling Leaderboard63%—
GDPval21.1%—
Cybench43%—
DeepResearch Bench47.3%—
BALROG43.6%—
LMArena Search1142—
METR Time Horizons66.6%—

Reasoning Step 5 Preview leads

Grok 4: 36.7 (#65), Step 5 Preview: 40.0 (#57)

BenchmarkGrok 4Step 5 Preview
LMArena Hard Prompts14091465
ARC-AGI-216%—
SimpleBench60.5%—
Kagi LLM Benchmark73.6%—
ARC-AGI-166.7%—
CritPt—20.9%
Chess Puzzles28%—
Epoch Capabilities Index146.44—
ForecastBench60.9—

Math Grok 4 leads

Grok 4: 48.4 (#64), Step 5 Preview: 46.1 (#72)

BenchmarkGrok 4Step 5 Preview
LMArena Math14221470
OTIS Mock AIME 2024-202584%—
ProofBench—42%
Omni-MATH60.3%—
FrontierMath (Feb 2025 set)19.7%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Grok 4 leads

Grok 4: 53.8 (#55), Step 5 Preview: 41.2 (#112)

BenchmarkGrok 4Step 5 Preview
LMArena Expert14151470
GPQA Diamond87%—
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—

Multimodal Step 5 Preview leads

Grok 4: 33.7 (#94), Step 5 Preview: 41.0 (#41)

BenchmarkGrok 4Step 5 Preview
LMArena Vision12101267
GeoBench45%—

Multilingual Step 5 Preview leads

Grok 4: 51.8 (#103), Step 5 Preview: 53.8 (#54)

BenchmarkGrok 4Step 5 Preview
LMArena Non-English14031432
LMArena Chinese14271519
LMArena Russian14101436
LMArena Spanish14201439
LMArena French1418—
LMArena German1429—
LMArena Japanese1394—
LMArena Korean1377—

Instruction Following Grok 4 leads

Grok 4: 79.2 (#5), Step 5 Preview: 76.0 (#50)

BenchmarkGrok 4Step 5 Preview
LMArena Instruction Following13871444
IFEval94.9%—

Long Context Grok 4 leads

Grok 4: 63.1 (#4), Step 5 Preview: 44.5 (#64)

BenchmarkGrok 4Step 5 Preview
LMArena Longer Query14091455
Fiction.LiveBench94.4%—

Writing & Preference Step 5 Preview leads

Grok 4: 58.5 (#116), Step 5 Preview: 62.8 (#71)

BenchmarkGrok 4Step 5 Preview
LMArena Text14111442
LMArena Creative Writing13971410
LMArena Multi-Turn14161447
Short-Story Creative Writing76.9%—
WildBench79.7%—

Frequently asked questions

Is Grok 4 better than Step 5 Preview?

Grok 4 and Step 5 Preview score almost the same on the Noometry Index (48.1 vs 47.9), so choose on price, context window or the category you care about most.

Is Grok 4 or Step 5 Preview better for coding?

Step 5 Preview scores higher on coding benchmarks: 51.8 versus 50.3 in the Noometry coding category.

How many benchmarks do Grok 4 and Step 5 Preview share?

14 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Step 5 Preview has 18.

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