Noometry

Model comparison

Grok-3 mini vs Muse Spark 1.3

Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 41.2 on the Noometry Index.

Last verified . 19 shared benchmarks.

Grok-3 mini xAI

41.2

Rank #141 Confirmed

Muse Spark 1.3 Meta

54.8

Rank #27 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Grok-3 mini scores higher in 2 categories and Muse Spark 1.3 in 6 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Muse Spark 1.3 leads 54.0 to 13.6.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 77.8% for Grok-3 mini and 99.2% for Muse Spark 1.3.

Side by side

Grok-3 miniMuse Spark 1.3
ProviderxAIMeta
Noometry Index41.254.8
Released2025-04-092026-09-02
WeightsProprietaryProprietary
Context window—1.05M
Max output—131K
Input $ / M tokens—$1.25
Output $ / M tokens—$4.25
Results tracked3537

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Category by category

Coding Muse Spark 1.3 leads

Grok-3 mini: 40.8 (#131), Muse Spark 1.3: 56.6 (#21)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Coding13791514
Aider Polyglot49.3%—
CursorBench—41.6%
LMArena WebDev—1657
SciCode—59.7%
WeirdML42.6%—

Agentic & Tool Use Not comparable

Grok-3 mini: —, Muse Spark 1.3: 38.6 (#30)

BenchmarkGrok-3 miniMuse Spark 1.3
APEX-Agents—57.8%
GDP.pdf—27.6%

Reasoning Muse Spark 1.3 leads

Grok-3 mini: 13.6 (#334), Muse Spark 1.3: 54.0 (#27)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Hard Prompts13751503
Epoch Capabilities Index140.35156.75
ARC-AGI-20.4%—
Kagi LLM Benchmark61.3%—
NYT Connections (extended)—85.1%
ARC-AGI-116.5%—
CritPt—26%
Chess Puzzles—38%
Mystery Game Puzzles—25%
DTBench—96.5%
LMCA—53.9%
Bench to the Future 3—0.14

Math Muse Spark 1.3 leads

Grok-3 mini: 42.1 (#85), Muse Spark 1.3: 73.1 (#21)

BenchmarkGrok-3 miniMuse Spark 1.3
OTIS Mock AIME 2024-202577.8%99.2%
LMArena Math13861494
FrontierMath (Tiers 1-3)—74.4%
FrontierMath Tier 4—46.3%
ProofBench—58%
Omni-MATH31.8%—
MATH Level 590.9%—
FrontierMath (Feb 2025 set)5.9%—

Knowledge Grok-3 mini leads

Grok-3 mini: 46.4 (#81), Muse Spark 1.3: 42.6 (#95)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Expert13951516
GPQA Diamond76.3%—
MMLU-Pro79.9%—
Confabulations10.8%—
GPQA (HELM)67.5%—

Multimodal Not comparable

Grok-3 mini: —, Muse Spark 1.3: 43.7 (#22)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Vision—1309
LMArena Document—1471

Multilingual Muse Spark 1.3 leads

Grok-3 mini: 48.1 (#145), Muse Spark 1.3: 57.4 (#8)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Non-English13521481
LMArena Chinese13871529
LMArena French13571524
LMArena German13491515
LMArena Japanese13421474
LMArena Korean13351501
LMArena Russian13531490
LMArena Spanish13811490

Instruction Following Grok-3 mini leads

Grok-3 mini: 78.5 (#9), Muse Spark 1.3: 77.5 (#22)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Instruction Following13571477
IFEval95.1%—

Long Context Muse Spark 1.3 leads

Grok-3 mini: 41.0 (#147), Muse Spark 1.3: 45.6 (#32)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Longer Query13721488
Fiction.LiveBench66.7%—

Writing & Preference Muse Spark 1.3 leads

Grok-3 mini: 52.5 (#169), Muse Spark 1.3: 73.6 (#9)

BenchmarkGrok-3 miniMuse Spark 1.3
LMArena Text13701490
LMArena Creative Writing13421455
LMArena Multi-Turn13551482
Short-Story Creative Writing73.5%—
EQ-Bench Creative Writing—1906
WildBench65.1%—

Frequently asked questions

Is Grok-3 mini better than Muse Spark 1.3?

Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 41.2 on the Noometry Index.

Is Grok-3 mini or Muse Spark 1.3 better for coding?

Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 40.8 in the Noometry coding category.

How many benchmarks do Grok-3 mini and Muse Spark 1.3 share?

19 benchmarks have published results for both models. Grok-3 mini has 35 scored results on Noometry and Muse Spark 1.3 has 37.

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