Noometry

Model comparison

Grok 4 vs Longcat Flash Chat

Grok 4 is the stronger model overall, scoring 48.1 to 42.1 on the Noometry Index.

Last verified . 18 shared benchmarks.

Grok 4 xAI

48.1

Rank #56 Confirmed

Longcat Flash Chat Meituan

42.1

Rank #120 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Grok 4 scores higher in 6 categories and Longcat Flash Chat in 2 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in long context, where Grok 4 leads 63.1 to 43.5.
  • The biggest single-benchmark swing is Kagi LLM Benchmark: 73.6% for Grok 4 and 43.9% for Longcat Flash Chat.
  • Longcat Flash Chat has downloadable open weights; the other is API-only.

Side by side

Grok 4Longcat Flash Chat
ProviderxAIMeituan
Noometry Index48.142.1
Released2025-07-09—
WeightsProprietaryOpen
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked4819

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Category by category

Coding Grok 4 leads

Grok 4: 50.3 (#46), Longcat Flash Chat: 43.5 (#87)

BenchmarkGrok 4Longcat Flash Chat
LMArena Coding14081471
Aider Polyglot79.6%—
WeirdML45.7%—

Agentic & Tool Use Not comparable

Grok 4: 32.3 (#68), Longcat Flash Chat: —

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

Reasoning Grok 4 leads

Grok 4: 36.7 (#65), Longcat Flash Chat: 19.0 (#272)

BenchmarkGrok 4Longcat Flash Chat
Kagi LLM Benchmark73.6%43.9%
LMArena Hard Prompts14091440
ARC-AGI-216%—
SimpleBench60.5%—
NYT Connections (extended)—17.7%
ARC-AGI-166.7%—
Chess Puzzles28%—
Epoch Capabilities Index146.44—
ForecastBench60.9—

Math Grok 4 leads

Grok 4: 48.4 (#64), Longcat Flash Chat: 39.4 (#107)

BenchmarkGrok 4Longcat Flash Chat
LMArena Math14221442
OTIS Mock AIME 2024-202584%—
Omni-MATH60.3%—
FrontierMath (Feb 2025 set)19.7%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Grok 4 leads

Grok 4: 53.8 (#55), Longcat Flash Chat: 40.6 (#116)

BenchmarkGrok 4Longcat Flash Chat
LMArena Expert14151454
GPQA Diamond87%—
MMLU-Pro85.1%—
Confabulations12.4%—
GPQA (HELM)72.7%—

Multimodal Not comparable

Grok 4: 33.7 (#94), Longcat Flash Chat: —

BenchmarkGrok 4Longcat Flash Chat
LMArena Vision1210—
GeoBench45%—

Multilingual Too close to call

Grok 4: 51.8 (#103), Longcat Flash Chat: 51.9 (#101)

BenchmarkGrok 4Longcat Flash Chat
LMArena Non-English14031404
LMArena Chinese14271465
LMArena French14181456
LMArena German14291408
LMArena Japanese13941373
LMArena Korean13771371
LMArena Russian14101395
LMArena Spanish14201445

Instruction Following Grok 4 leads

Grok 4: 79.2 (#5), Longcat Flash Chat: 74.4 (#96)

BenchmarkGrok 4Longcat Flash Chat
LMArena Instruction Following13871411
IFEval94.9%—

Long Context Grok 4 leads

Grok 4: 63.1 (#4), Longcat Flash Chat: 43.5 (#93)

BenchmarkGrok 4Longcat Flash Chat
LMArena Longer Query14091425
Fiction.LiveBench94.4%—

Writing & Preference Longcat Flash Chat leads

Grok 4: 58.5 (#116), Longcat Flash Chat: 61.0 (#91)

BenchmarkGrok 4Longcat Flash Chat
LMArena Text14111427
LMArena Creative Writing13971388
LMArena Multi-Turn14161418
Short-Story Creative Writing76.9%—
WildBench79.7%—

Frequently asked questions

Is Grok 4 better than Longcat Flash Chat?

Grok 4 is the stronger model overall, scoring 48.1 to 42.1 on the Noometry Index.

Is Grok 4 or Longcat Flash Chat better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 43.5 in the Noometry coding category.

How many benchmarks do Grok 4 and Longcat Flash Chat share?

18 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and Longcat Flash Chat has 19.

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